Table 1 Waters and Impairments Approved on Illinois 1 of 133 of Illinois 2018 Decison Document 2018 303(d) List Title Corrected 3/24/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING GREAT LAKES BAYS Square POLYCHLORINATED Not meeting IL_3S Calumet Harbor 2.4 Fish Consumption Low AND HARBORS Miles BIPHENYLS (PCBS) criteria

GREAT LAKES BAYS Square Not meeting IL_3S Calumet Harbor 2.4 MERCURY Fish Consumption Low AND HARBORS Miles criteria Primary Contact Not meeting IL_A-848-849 Ohio River STREAM 1.11 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_A-848-849 Ohio River STREAM 1.11 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_A-848-849 Ohio River STREAM 1.11 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold DIOXIN (INCLUDING 2,3,7,8- Not meeting IL_A-848-849 Ohio River STREAM 1.11 Miles Fish Consumption Medium TCDD) threshold POLYCHLORINATED Not meeting IL_A-849-862 Ohio River STREAM 12.68 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_A-849-862 Ohio River STREAM 12.68 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_A-849-862 Ohio River STREAM 12.68 Miles FECAL COLIFORM Medium Recreation criteria DIOXIN (INCLUDING 2,3,7,8- Not meeting IL_A-849-862 Ohio River STREAM 12.68 Miles Fish Consumption Medium TCDD) threshold POLYCHLORINATED Not meeting IL_A-862-873 Ohio River STREAM 11.24 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_A-862-873 Ohio River STREAM 11.24 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_A-862-873 Ohio River STREAM 11.24 Miles MERCURY Fish Consumption Medium threshold DIOXIN (INCLUDING 2,3,7,8- Not meeting IL_A-862-873 Ohio River STREAM 11.24 Miles Fish Consumption Medium TCDD) threshold Not meeting IL_A-873-894 Ohio River STREAM 19.74 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_A-873-894 Ohio River STREAM 19.74 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold DIOXIN (INCLUDING 2,3,7,8- Not meeting IL_A-873-894 Ohio River STREAM 19.74 Miles Fish Consumption Medium TCDD) threshold Primary Contact Not meeting IL_A-873-894 Ohio River STREAM 19.74 Miles FECAL COLIFORM Medium Recreation criteria POLYCHLORINATED Not meeting IL_A-894-910 Ohio River STREAM 16.08 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_A-894-910 Ohio River STREAM 16.08 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_A-894-910 Ohio River STREAM 16.08 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 2 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING DIOXIN (INCLUDING 2,3,7,8- Not meeting IL_A-894-910 Ohio River STREAM 16.08 Miles Fish Consumption Medium TCDD) threshold POLYCHLORINATED Not meeting IL_A-910-920 Ohio River STREAM 10.22 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold DIOXIN (INCLUDING 2,3,7,8- Not meeting IL_A-910-920 Ohio River STREAM 10.22 Miles Fish Consumption Medium TCDD) threshold Not meeting IL_A-910-920 Ohio River STREAM 10.22 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_A-920-981 Ohio River STREAM 60.13 Miles FECAL COLIFORM Medium Recreation criteria DIOXIN (INCLUDING 2,3,7,8- Not meeting IL_A-920-981 Ohio River STREAM 60.13 Miles Fish Consumption Medium TCDD) threshold POLYCHLORINATED Not meeting IL_A-920-981 Ohio River STREAM 60.13 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_A-920-981 Ohio River STREAM 60.13 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_AD-02 Cache River STREAM 7.55 Miles DISSOLVED OXYGEN Aquatic Life Medium threshold Not meeting IL_AD-02 Cache River STREAM 7.55 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_AD-02 Cache River STREAM 7.55 Miles PH Aquatic Life Medium threshold Not meeting IL_AD-02 Cache River STREAM 7.55 Miles IRON Aquatic Life Medium threshold Not meeting IL_AD-04 Cache River STREAM 22.33 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_AD-05 Cache River STREAM 11.16 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_AD-06 Cache River STREAM 6.55 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_AD-09 Post Creek Cutoff STREAM 5.22 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_AD-11 Cache River STREAM 6.55 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_ADC-01 Main Ditch STREAM 8.68 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ADCA Clifty Creek STREAM 8.01 Miles DISSOLVED OXYGEN Aquatic Life Medium threshold New Columbia Not meeting IL_ADCD-01 STREAM 10.12 Miles DISSOLVED OXYGEN Aquatic Life Medium Ditch threshold Not meeting IL_ADCDA Bear Creek STREAM 14.16 Miles PH Aquatic Life Medium criteria Not meeting IL_ADCDA Bear Creek STREAM 14.16 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Table 1 Waters and Impairments Approved on Illinois 3 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_ADCF Tucker Ditch STREAM 5.97 Miles DISSOLVED OXYGEN Aquatic Life Medium threshold Not meeting IL_ADD-01 Dutchman Creek STREAM 5.11 Miles DISSOLVED OXYGEN Aquatic Life Medium threshold Not meeting IL_ADD-01 Dutchman Creek STREAM 5.11 Miles PH Aquatic Life Medium threshold Not meeting IL_ADD-05 Dutchman Creek STREAM 4.7 Miles PH Aquatic Life Medium criteria Not meeting IL_ADDA Cave Creek STREAM 7.21 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ADX-01 Cache Creek STREAM 3.01 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_ADY-01 Cache River STREAM 3.92 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_ADY-01 Cache River STREAM 3.92 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ADY-01 Cache River STREAM 3.92 Miles IRON Aquatic Life Medium threshold Not meeting IL_AE Massac Creek STREAM 16.53 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_AEA Weaver Creek STREAM 5.78 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_AH Dog Creek STREAM 9.93 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_AJF-02 Cedar Creek STREAM 1.95 Miles Aquatic Life Medium N threshold Not meeting IL_AJF-02 Cedar Creek STREAM 1.95 Miles MANGANESE Aquatic Life Medium criteria Not meeting IL_AJF-02 Cedar Creek STREAM 1.95 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_AJF-16 Cedar Creek STREAM 10.98 Miles PH Aquatic Life Medium threshold Not meeting IL_AJFA-21 Max Creek STREAM 10.88 Miles DISSOLVED OXYGEN Aquatic Life Medium threshold Not meeting IL_AJG-18 Hayes Creek STREAM 15.08 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_AJG-18 Hayes Creek STREAM 15.08 Miles PH Aquatic Life Medium threshold Not meeting IL_AK-02 Lusk Creek STREAM 7.8 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_AK-04 Lusk Creek STREAM 12.96 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_AK-07 Lusk Creek STREAM 11.32 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 4 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Big Grand Pierre Not meeting IL_AL-01 STREAM 16.2 Miles MERCURY Fish Consumption Medium Creek threshold Not meeting IL_AO-02 Big Creek STREAM 9.55 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_AO-03 Big Creek STREAM 9.2 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_AP Hosick Creek STREAM 4.05 Miles DISSOLVED OXYGEN Aquatic Life Medium threshold Not meeting IL_AQ Peters Creek STREAM 9.67 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_AR Haney Creek STREAM 12.68 Miles DISSOLVED OXYGEN Aquatic Life Medium threshold Not meeting IL_AT-05 Saline River STREAM 9.6 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_AT-05 Saline River STREAM 9.6 Miles BOTTOM DEPOSITS Aesthetic Quality Medium criteria Not meeting IL_AT-05 Saline River STREAM 9.6 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_AT-06 Saline River STREAM 10.44 Miles IRON Aquatic Life Medium threshold Not meeting IL_AT-06 Saline River STREAM 10.44 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_AT-06 Saline River STREAM 10.44 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_AT-06 Saline River STREAM 10.44 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_AT-07 Saline River STREAM 7.23 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_AT-07 Saline River STREAM 7.23 Miles Aquatic Life Medium N threshold Not meeting IL_AT-07 Saline River STREAM 7.23 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria TOTAL SUSPENDED Not meeting IL_AT-07 Saline River STREAM 7.23 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_AT-07 Saline River STREAM 7.23 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_ATB Harris Creek STREAM 13.01 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ATBA Rock Creek STREAM 10.22 Miles COPPER Aquatic Life Medium criteria Not meeting IL_ATBA Rock Creek STREAM 10.22 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ATE-03 Eagle Creek STREAM 2.66 Miles SULFATE Aquatic Life Medium criteria Table 1 Waters and Impairments Approved on Illinois 5 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_ATE-03 Eagle Creek STREAM 2.66 Miles MANGANESE Aquatic Life Medium criteria Not meeting IL_ATE-03 Eagle Creek STREAM 2.66 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ATE-05 Eagle Creek STREAM 1.76 Miles SULFATE Aquatic Life Medium criteria Not meeting IL_ATE-05 Eagle Creek STREAM 1.76 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ATE-05 Eagle Creek STREAM 1.76 Miles MANGANESE Aquatic Life Medium criteria Not meeting IL_ATEE-08 Rose Creek STREAM 3.14 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ATEE-08 Rose Creek STREAM 3.14 Miles SULFATE Aquatic Life Medium criteria North Fork Saline Primary Contact Not meeting IL_ATF-04 STREAM 5.21 Miles FECAL COLIFORM Medium River Recreation criteria North Fork Saline Not meeting IL_ATF-04 STREAM 5.21 Miles DISSOLVED OXYGEN Aquatic Life Medium River criteria North Fork Saline Not meeting IL_ATF-04 STREAM 5.21 Miles IRON Aquatic Life Medium River criteria North Fork Saline Not meeting IL_ATF-04 STREAM 5.21 Miles MERCURY Fish Consumption Medium River threshold North Fork Saline Not meeting IL_ATF-04 STREAM 5.21 Miles ZINC Aquatic Life Medium River threshold North Fork Saline Not meeting IL_ATF-05 STREAM 7.95 Miles TEMPERATURE Aquatic Life Medium River threshold North Fork Saline Not meeting IL_ATF-05 STREAM 7.95 Miles CHLORIDE Aquatic Life Medium River threshold North Fork Saline Not meeting IL_ATF-05 STREAM 7.95 Miles DISSOLVED OXYGEN Aquatic Life Medium River threshold North Fork Saline Not meeting IL_ATF-06 STREAM 14.62 Miles DISSOLVED OXYGEN Aquatic Life Medium River criteria North Fork Saline Not meeting IL_ATF-06 STREAM 14.62 Miles MERCURY Fish Consumption Medium River threshold North Fork Saline Not meeting IL_ATF-07 STREAM 5.62 Miles CHLORIDE Aquatic Life Medium River criteria Not meeting IL_ATFA-01 Crawford Creek STREAM 9.91 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_ATFD-01 Brush Creek STREAM 6.2 Miles BOTTOM DEPOSITS Aesthetic Quality Medium criteria Not meeting IL_ATFD-01 Brush Creek STREAM 6.2 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ATFE-01 Rector Creek STREAM 19.74 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Table 1 Waters and Impairments Approved on Illinois 6 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_ATFEA-01 Long Branch STREAM 9.87 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ATFFA Hogg Creek STREAM 11.02 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ATFFAA Greasy Creek STREAM 6.35 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ATFIA-MC-C1 Bear Creek STREAM 1.16 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_ATFI-MC-C4 Tenmile Creek STREAM 3.02 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_ATFI-MC-D1 Tenmile Creek STREAM 8.94 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ATFJ-01 Cane Creek STREAM 2.76 Miles DISSOLVED OXYGEN Aquatic Life Medium threshold Not meeting IL_ATFJC-01 Bear Creek STREAM 19.88 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ATGC-11 Bankston Fork STREAM 7.22 Miles DISSOLVED OXYGEN Aquatic Life Medium threshold Not meeting IL_ATGH-04 Brushy Creek STREAM 7.82 Miles DISSOLVED OXYGEN Aquatic Life Medium threshold Not meeting IL_ATGH-10 Brushy Creek STREAM 3.19 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_ATGM-01 Harco Branch STREAM 3.34 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria South Fork Saline Not meeting IL_ATH-02 STREAM 8.11 Miles CADMIUM Aquatic Life Medium River criteria South Fork Saline Primary Contact Not meeting IL_ATH-05 STREAM 8.67 Miles FECAL COLIFORM Medium River Recreation criteria South Fork Saline Not meeting IL_ATH-05 STREAM 8.67 Miles ZINC Aquatic Life Medium River criteria South Fork Saline Not meeting IL_ATH-05 STREAM 8.67 Miles NICKEL Aquatic Life Medium River criteria South Fork Saline Not meeting IL_ATH-05 STREAM 8.67 Miles DISSOLVED OXYGEN Aquatic Life Low River threshold South Fork Saline DEBRIS/FLOATABLES/TRA Not meeting IL_ATH-05 STREAM 8.67 Miles Aesthetic Quality Medium River SH threshold South Fork Saline Not meeting IL_ATH-13 STREAM 12.68 Miles PH Aquatic Life Medium River criteria South Fork Saline Not meeting IL_ATH-14 STREAM 4.12 Miles CAUSE UNKNOWN Aquatic Life Medium River threshold Not meeting IL_ATHC-01 Battle Ford Creek STREAM 7.22 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ATHD-03 Little Saline River STREAM 13.63 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Table 1 Waters and Impairments Approved on Illinois 7 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_ATHE Pond Creek STREAM 9.21 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria TOTAL SUSPENDED Not meeting IL_ATHG-01 Sugar Creek STREAM 4.24 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_ATHG-01 Sugar Creek STREAM 4.24 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_ATHG-01 Sugar Creek STREAM 4.24 Miles BOTTOM DEPOSITS Aesthetic Quality Medium threshold Not meeting IL_ATHG-02 Sugar Creek STREAM 11.86 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ATHJ-01 Little Saline Creek STREAM 7.16 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_ATHJ-01 Little Saline Creek STREAM 7.16 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium criteria Not meeting IL_ATHJ-LE-C1A Little Saline Creek STREAM 0.7 Miles CAUSE UNKNOWN Aquatic Life Medium threshold TOTAL SUSPENDED Not meeting IL_ATHS-01 Brier Creek STREAM 3.47 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_ATHT-01 Stillhouse Creek STREAM 4.25 Miles PH Aquatic Life Medium criteria Not meeting IL_ATHT-01 Stillhouse Creek STREAM 4.25 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ATHT-01 Stillhouse Creek STREAM 4.25 Miles SULFATE Aquatic Life Medium criteria Not meeting IL_ATHU-01 Peters Slough STREAM 5.87 Miles IRON Aquatic Life Medium criteria Not meeting IL_ATHU-01 Peters Slough STREAM 5.87 Miles ZINC Aquatic Life Medium criteria Not meeting IL_ATHU-01 Peters Slough STREAM 5.87 Miles DISSOLVED OXYGEN Aquatic Life Medium threshold Not meeting IL_ATHU-01 Peters Slough STREAM 5.87 Miles PH Aquatic Life Medium criteria Not meeting IL_ATHV-01 East Palzo Creek STREAM 3.26 Miles COPPER Aquatic Life Low criteria Not meeting IL_B-01 Wabash River STREAM 55.86 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_B-01 Wabash River STREAM 55.86 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_B-03 Wabash River STREAM 55.58 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_B-03 Wabash River STREAM 55.58 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_B-06 Wabash River STREAM 78.16 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 8 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING POLYCHLORINATED Not meeting IL_B-06 Wabash River STREAM 78.16 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold SEDIMENTATION/SILTATIO Not meeting IL_BC-02 Bonpas Creek STREAM 28.95 Miles Aquatic Life Low N threshold SEDIMENTATION/SILTATIO Not meeting IL_BC-04 Bonpas Creek STREAM 26.2 Miles Aquatic Life Low N threshold Not meeting IL_BE-01 Embarras River STREAM 29.06 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Primary Contact Not meeting IL_BE-01 Embarras River STREAM 29.06 Miles FECAL COLIFORM Medium Recreation criteria Primary Contact Not meeting IL_BE-07 Embarras River STREAM 23.7 Miles FECAL COLIFORM Medium Recreation criteria Primary Contact Not meeting IL_BE-09 Embarras River STREAM 39.14 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_BE-09 Embarras River STREAM 39.14 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_BE-14 Embarras River STREAM 20.89 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_BE-14 Embarras River STREAM 20.89 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_BEB-01 Brushy Creek STREAM 8.15 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_BEDB-01 Dogwood Creek STREAM 15.22 Miles MANGANESE Aquatic Life Medium criteria Not meeting IL_BEDB-01 Dogwood Creek STREAM 15.22 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_BEDB-01 Dogwood Creek STREAM 15.22 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold North Fork Primary Contact Not meeting IL_BEF-05 STREAM 29.96 Miles FECAL COLIFORM Medium Embarras River Recreation criteria North Fork Not meeting IL_BEF-05 STREAM 29.96 Miles PH Aquatic Life Medium Embarras River threshold Not meeting IL_BEH Mint Creek STREAM 12.29 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_BENA-01 Riley Creek STREAM 1.38 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_BEPC Donica Creek STREAM 3.08 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_BEPD-01 Catfish Creek STREAM 11.26 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_BERB-TO-C1 Hackett Branch STREAM 6.61 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_BERB-TO-C1 Hackett Branch STREAM 6.61 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Table 1 Waters and Impairments Approved on Illinois 9 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_BERB-TO-C1A Hackett Branch STREAM 0.57 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_BERB-TO-C1A Hackett Branch STREAM 0.57 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_BEZB-07 Indian Creek STREAM 15.08 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_BEZF-01 Allison Ditch STREAM 18.71 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_BEZY Deer Creek STREAM 14.34 Miles IRON Aquatic Life Medium criteria Not meeting IL_BEZY Deer Creek STREAM 14.34 Miles TEMPERATURE Aquatic Life Medium criteria Not meeting IL_BEZY Deer Creek STREAM 14.34 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_BF-01 Sugar Creek STREAM 4.84 Miles CHLORIDE Aquatic Life Medium criteria TOTAL SUSPENDED Not meeting IL_BF-01 Sugar Creek STREAM 4.84 Miles Aquatic Life Medium SOLIDS (TSS) threshold PETROLEUM Not meeting IL_BF-01 Sugar Creek STREAM 4.84 Miles Aesthetic Quality Medium HYDROCARBONS criteria Primary Contact Not meeting IL_BF-01 Sugar Creek STREAM 4.84 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_BF-01 Sugar Creek STREAM 4.84 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_BFB-09 Lamotte Creek STREAM 11.61 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria PETROLEUM Not meeting IL_BFC-10 Robinson Creek STREAM 2.69 Miles Aesthetic Quality Medium HYDROCARBONS criteria Not meeting IL_BFC-11 Robinson Creek STREAM 0.92 Miles CHLORIDE Aquatic Life Medium criteria Not meeting IL_BFC-11 Robinson Creek STREAM 0.92 Miles FLUORIDE Aquatic Life Medium criteria Not meeting IL_BFC-11 Robinson Creek STREAM 0.92 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold PETROLEUM Not meeting IL_BFC-11 Robinson Creek STREAM 0.92 Miles Aesthetic Quality Medium HYDROCARBONS criteria Not meeting IL_BFC-19 Robinson Creek STREAM 0.72 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_BFC-20 Robinson Creek STREAM 3.66 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_BFC-25 Robinson Creek STREAM 0.23 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold PETROLEUM Not meeting IL_BFC-25 Robinson Creek STREAM 0.23 Miles Aesthetic Quality Medium HYDROCARBONS criteria Table 1 Waters and Impairments Approved on Illinois 10 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_BFC-26 Robinson Creek STREAM 1.26 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold PETROLEUM Not meeting IL_BFC-26 Robinson Creek STREAM 1.26 Miles Aesthetic Quality Medium HYDROCARBONS criteria PETROLEUM Not meeting IL_BFCA-22 Marathon Creek STREAM 1.01 Miles Aesthetic Quality Medium HYDROCARBONS criteria Not meeting IL_BFCA-22 Marathon Creek STREAM 1.01 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_BFCB-12 Quail Creek STREAM 3.79 Miles CAUSE UNKNOWN Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_BM-C2 Sugar Creek-North STREAM 2.18 Miles Aquatic Life Medium N threshold Not meeting IL_BM-C2 Sugar Creek-North STREAM 2.18 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Primary Contact Not meeting IL_BN-01 Brouilletts Creek STREAM 32.73 Miles FECAL COLIFORM Medium Recreation criteria Little Vermilion Not meeting IL_BO-08 STREAM 17.27 Miles DISSOLVED OXYGEN Aquatic Life Medium River criteria POLYCHLORINATED Not meeting IL_BP-01 Vermilion River STREAM 4.98 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_BP-01 Vermilion River STREAM 4.98 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_BP-01 Vermilion River STREAM 4.98 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_BP-03 Vermilion River STREAM 7.06 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_BP-03 Vermilion River STREAM 7.06 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_BP-04 Vermilion River STREAM 5.79 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_BP-04 Vermilion River STREAM 5.79 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_BPGD Hoopeston Branch STREAM 4.8 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Salt Fork Vermilion Not meeting IL_BPJ-07 STREAM 3.12 Miles DISSOLVED OXYGEN Aquatic Life Medium River criteria Salt Fork Vermilion Not meeting IL_BPJ-07 STREAM 3.12 Miles CHLORIDE Aquatic Life Medium River criteria Salt Fork Vermilion Primary Contact Not meeting IL_BPJ-07 STREAM 3.12 Miles FECAL COLIFORM Medium River Recreation criteria Salt Fork Vermilion Primary Contact Not meeting IL_BPJ-08 STREAM 3.21 Miles FECAL COLIFORM Medium River Recreation criteria Primary Contact Not meeting IL_BPJA-01 Jordan Creek STREAM 11.63 Miles FECAL COLIFORM Medium Recreation criteria Table 1 Waters and Impairments Approved on Illinois 11 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Saline Branch Not meeting IL_BPJC-08 STREAM 14.11 Miles PH Aquatic Life Medium Drainage Ditch criteria Not meeting IL_BPJCA Boneyard Creek STREAM 3.28 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_BPJCA Boneyard Creek STREAM 3.28 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_BPJCA Boneyard Creek STREAM 3.28 Miles COPPER Aquatic Life Medium criteria Upper Salt Fork Not meeting IL_BPJG-01 STREAM 24.05 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium Drainage Ditch criteria Upper Salt Fork Not meeting IL_BPJG-01 STREAM 24.05 Miles PH Aquatic Life Medium Drainage Ditch criteria Upper Salt Fork Not meeting IL_BPJG-01 STREAM 24.05 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Drainage Ditch threshold Upper Salt Fork Not meeting IL_BPJG-01 STREAM 24.05 Miles DISSOLVED OXYGEN Aquatic Life Medium Drainage Ditch criteria Middle Fork Primary Contact Not meeting IL_BPK-07 STREAM 10.74 Miles FECAL COLIFORM Medium Vermilion River Recreation criteria Not meeting IL_BPKP-01 Big Four Ditch STREAM 10.38 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_BPKP-02 Big Four Ditch STREAM 18.68 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_BZJ Crawfish Creek STREAM 11.81 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_BZK-01 Raccoon Creek STREAM 21.17 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_C-01 Little Wabash River STREAM 20.95 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_C-01 Little Wabash River STREAM 20.95 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium criteria Not meeting IL_C-01 Little Wabash River STREAM 20.95 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_C-09 Little Wabash River STREAM 22.21 Miles IRON Aquatic Life Medium threshold Not meeting IL_C-09 Little Wabash River STREAM 22.21 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_C-12 Little Wabash River STREAM 9.62 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_C-12 Little Wabash River STREAM 9.62 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_C-19 Little Wabash River STREAM 57.94 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_C-21 Little Wabash River STREAM 32.14 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 12 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_C-21 Little Wabash River STREAM 32.14 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_C-22 Little Wabash River STREAM 21.59 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_C-22 Little Wabash River STREAM 21.59 Miles CAUSE UNKNOWN Aquatic Life Medium threshold TOTAL SUSPENDED Not meeting IL_C-23 Little Wabash River STREAM 16.02 Miles Aquatic Life Medium SOLIDS (TSS) threshold Primary Contact Not meeting IL_C-23 Little Wabash River STREAM 16.02 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_C-23 Little Wabash River STREAM 16.02 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_C-23 Little Wabash River STREAM 16.02 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_C-23 Little Wabash River STREAM 16.02 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_C-24 Little Wabash River STREAM 9.77 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_C-24 Little Wabash River STREAM 9.77 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_C-33 Little Wabash River STREAM 43.72 Miles MERCURY Fish Consumption High threshold Public and Food Not meeting IL_C-33 Little Wabash River STREAM 43.72 Miles SIMAZINE Processing Water High criteria Supplies Public and Food Not meeting IL_C-33 Little Wabash River STREAM 43.72 Miles IRON Processing Water High criteria Supplies Not meeting IL_CA-02 Skillet Fork STREAM 20.05 Miles MERCURY Fish Consumption Medium threshold TOTAL SUSPENDED Not meeting IL_CA-02 Skillet Fork STREAM 20.05 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_CA-02 Skillet Fork STREAM 20.05 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_CA-03 Skillet Fork STREAM 7.22 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_CA-03 Skillet Fork STREAM 7.22 Miles MERCURY Fish Consumption Medium threshold TOTAL SUSPENDED Not meeting IL_CA-05 Skillet Fork STREAM 11.13 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_CA-05 Skillet Fork STREAM 11.13 Miles IRON Aquatic Life Medium criteria Not meeting IL_CA-05 Skillet Fork STREAM 11.13 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 13 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Public and Food Not meeting IL_CA-05 Skillet Fork STREAM 11.13 Miles IRON Processing Water Medium criteria Supplies Not meeting IL_CA-06 Skillet Fork STREAM 16.87 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_CA-07 Skillet Fork STREAM 11.84 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_CA-07 Skillet Fork STREAM 11.84 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_CA-08 Skillet Fork STREAM 10.92 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_CA-08 Skillet Fork STREAM 10.92 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_CA-09 Skillet Fork STREAM 19.75 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_CA-09 Skillet Fork STREAM 19.75 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_CAGB Big Creek STREAM 19.58 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_CAGC-01 Auxier Creek STREAM 28.84 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_CAJ-01 Dry Fork STREAM 23.14 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_CAK Fourmile Creek STREAM 18.4 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_CAK Fourmile Creek STREAM 18.4 Miles PH Aquatic Life Medium criteria Not meeting IL_CAN-01 Horse Creek STREAM 31.05 Miles CAUSE UNKNOWN Aquatic Life Low threshold Not meeting IL_CAR-01 Brush Creek STREAM 23.07 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_CAW-04 Dums Creek STREAM 27.9 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_CB Big Creek-South STREAM 5.48 Miles PHOSPHORUS, TOTAL Aesthetic Quality High criteria Not meeting IL_CB Big Creek-South STREAM 5.48 Miles DISSOLVED OXYGEN Aquatic Life High criteria Not meeting IL_CCA-FF-A1 Johnson Creek STREAM 3.49 Miles CAUSE UNKNOWN Aquatic Life High threshold Not meeting IL_CC-FF-C3 Pond Creek STREAM 7.33 Miles CAUSE UNKNOWN Aquatic Life High threshold Not meeting IL_CC-FF-D1 Pond Creek STREAM 4.64 Miles CAUSE UNKNOWN Aquatic Life High threshold Table 1 Waters and Impairments Approved on Illinois 14 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_CD-01 Elm River STREAM 8.64 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_CD-01 Elm River STREAM 8.64 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_CD-01 Elm River STREAM 8.64 Miles IRON Aquatic Life Medium threshold Not meeting IL_CD-04 Elm River STREAM 36.41 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_CDB Deer Creek STREAM 17.62 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_CDB Deer Creek STREAM 17.62 Miles MANGANESE Aquatic Life Medium criteria Not meeting IL_CDBA Martin Creek STREAM 12.53 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_CDF-02 Raccoon Creek STREAM 23.71 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_CDG-FL-A1 Seminary Creek STREAM 1.65 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_CDG-FL-C1 Seminary Creek STREAM 1.48 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_CDG-FL-C4 Seminary Creek STREAM 2.15 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_CDG-FL-C6 Seminary Creek STREAM 2.36 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_CE-01 Village Creek STREAM 14.53 Miles MANGANESE Aquatic Life Low criteria TOTAL SUSPENDED Not meeting IL_CE-01 Village Creek STREAM 14.53 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_CH-02 Fox River STREAM 24.46 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Primary Contact Not meeting IL_CH-02 Fox River STREAM 24.46 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_CH-02 Fox River STREAM 24.46 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_CH-02 Fox River STREAM 24.46 Miles IRON Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_CH-02 Fox River STREAM 24.46 Miles Aquatic Life Medium N threshold Public and Food Not meeting IL_CH-03 Fox River STREAM 21.87 Miles FECAL COLIFORM Processing Water Medium criteria Supplies Not meeting IL_CH-03 Fox River STREAM 21.87 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Table 1 Waters and Impairments Approved on Illinois 15 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_CH-03 Fox River STREAM 21.87 Miles MERCURY Fish Consumption Medium threshold Public and Food Not meeting IL_CH-03 Fox River STREAM 21.87 Miles IRON Processing Water Medium criteria Supplies Not meeting IL_CHEA-11 Big Creek STREAM 11.77 Miles COPPER Aquatic Life Medium criteria Not meeting IL_CHEA-11 Big Creek STREAM 11.77 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_CJ-04 Big Muddy Creek STREAM 17.15 Miles MANGANESE Aquatic Life Medium criteria Not meeting IL_CJ-04 Big Muddy Creek STREAM 17.15 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_CJ-04 Big Muddy Creek STREAM 17.15 Miles Aquatic Life Medium N criteria Not meeting IL_CJ-04 Big Muddy Creek STREAM 17.15 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_CJ-06 Big Muddy Creek STREAM 34.4 Miles MERCURY Fish Consumption Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_CJA-02 Little Muddy Creek STREAM 32.42 Miles Aquatic Life Medium N threshold Not meeting IL_CJA-02 Little Muddy Creek STREAM 32.42 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_CJA-02 Little Muddy Creek STREAM 32.42 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_CJC Hurricane Creek STREAM 16.59 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_CM-02 Dismal Creek STREAM 24.58 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_COC-09 Dieterich Creek STREAM 0.99 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold TOTAL SUSPENDED Not meeting IL_COC-09 Dieterich Creek STREAM 0.99 Miles Aquatic Life Medium SOLIDS (TSS) threshold SEDIMENTATION/SILTATIO Not meeting IL_COC-09 Dieterich Creek STREAM 0.99 Miles Aquatic Life Medium N threshold Not meeting IL_COC-10 Dieterich Creek STREAM 8.66 Miles CAUSE UNKNOWN Aquatic Life Medium threshold TOTAL SUSPENDED Not meeting IL_CP-04 Salt Creek STREAM 1.97 Miles Aquatic Life Medium SOLIDS (TSS) threshold SEDIMENTATION/SILTATIO Not meeting IL_CP-04 Salt Creek STREAM 1.97 Miles Aquatic Life Medium N threshold Not meeting IL_CP-04 Salt Creek STREAM 1.97 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Table 1 Waters and Impairments Approved on Illinois 16 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_CP-04 Salt Creek STREAM 1.97 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_CPC-TU-C1 First Salt Creek STREAM 1.54 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_CPD-01 Second Salt Creek STREAM 2.9 Miles MANGANESE Aquatic Life Medium criteria Not meeting IL_CPD-01 Second Salt Creek STREAM 2.9 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_CPD-03 Second Salt Creek STREAM 1.46 Miles Aquatic Life Medium N threshold TOTAL SUSPENDED Not meeting IL_CPD-03 Second Salt Creek STREAM 1.46 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_CPD-03 Second Salt Creek STREAM 1.46 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold TOTAL SUSPENDED Not meeting IL_CPD-04 Second Salt Creek STREAM 3.08 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_CPD-04 Second Salt Creek STREAM 3.08 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_CPD-04 Second Salt Creek STREAM 3.08 Miles Aquatic Life Medium N threshold Not meeting IL_CP-EF-C2 Salt Creek STREAM 2.4 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_CP-EF-C4 Salt Creek STREAM 1.87 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_CP-TU-C3 Salt Creek STREAM 0.89 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_CR Big Creek-North STREAM 13.42 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria East Branch Green Not meeting IL_CSB-07 STREAM 3.43 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Creek threshold East Branch Green Not meeting IL_CSB-08 STREAM 5.98 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Creek threshold Not meeting IL_CZN Buck Creek STREAM 20.83 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_CZZB-CC-C1 Clay Creek STREAM 2.35 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_CZZB-CC-C1 Clay Creek STREAM 2.35 Miles AMMONIA, TOTAL Aquatic Life Medium criteria Not meeting IL_CZZB-CC-C1 Clay Creek STREAM 2.35 Miles SLUDGE Aquatic Life Medium criteria Not meeting IL_CZZB-CC-C2 Clay Creek STREAM 1.25 Miles SLUDGE Aquatic Life Medium criteria Not meeting IL_CZZB-CC-C2 Clay Creek STREAM 1.25 Miles AMMONIA, TOTAL Aquatic Life Medium criteria Table 1 Waters and Impairments Approved on Illinois 17 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_CZZB-CC-C2 Clay Creek STREAM 1.25 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_CZZB-CC-C2 Clay Creek STREAM 1.25 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold POLYCHLORINATED Not meeting IL_D-01 Illinois River STREAM 48.28 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_D-01 Illinois River STREAM 48.28 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_D-05 Illinois River STREAM 12.22 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_D-05 Illinois River STREAM 12.22 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_D-09 Illinois River STREAM 19.1 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_D-09 Illinois River STREAM 19.1 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_D-10 Illinois River STREAM 9.38 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_D-10 Illinois River STREAM 9.38 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_D-16 Illinois River STREAM 24.75 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_D-16 Illinois River STREAM 24.75 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_D-20 Illinois River STREAM 13.67 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_D-20 Illinois River STREAM 13.67 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_D-20 Illinois River STREAM 13.67 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_D-23 Illinois River STREAM 30.51 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_D-23 Illinois River STREAM 30.51 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_D-23 Illinois River STREAM 30.51 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_D-30 Illinois River STREAM 21.83 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_D-30 Illinois River STREAM 21.83 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_D-31 Illinois River STREAM 66.51 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_D-31 Illinois River STREAM 66.51 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 18 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING POLYCHLORINATED Not meeting IL_D-31 Illinois River STREAM 66.51 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_D-32 Illinois River STREAM 34.05 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_D-32 Illinois River STREAM 34.05 Miles FECAL COLIFORM Medium Recreation criteria POLYCHLORINATED Not meeting IL_D-32 Illinois River STREAM 34.05 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_DA-03 Macoupin Creek STREAM 7.98 Miles FECAL COLIFORM Medium Recreation criteria TOTAL SUSPENDED Not meeting IL_DA-05 Macoupin Creek STREAM 45.47 Miles Aquatic Life High SOLIDS (TSS) threshold Primary Contact Not meeting IL_DA-06 Macoupin Creek STREAM 25.23 Miles FECAL COLIFORM Medium Recreation criteria TOTAL SUSPENDED Not meeting IL_DAF-01 Taylor Creek STREAM 24.1 Miles Aquatic Life High SOLIDS (TSS) threshold Not meeting IL_DAF-01 Taylor Creek STREAM 24.1 Miles MANGANESE Aquatic Life High criteria Not meeting IL_DAG-02 Hodges Creek STREAM 11.37 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_DAGD-01 Otter Creek STREAM 14.94 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_DAZN Briar Creek STREAM 4.44 Miles DISSOLVED OXYGEN Aquatic Life High criteria Not meeting IL_DAZN Briar Creek STREAM 4.44 Miles PHOSPHORUS, TOTAL Aquatic Life High threshold Primary Contact Not meeting IL_DB-01 Apple Creek STREAM 21.88 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_DB-01 Apple Creek STREAM 21.88 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_DBC Seminary Creek STREAM 12.49 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Primary Contact Not meeting IL_DE-01 McKee Creek STREAM 13.73 Miles FECAL COLIFORM Medium Recreation criteria Primary Contact Not meeting IL_DG-01 La Moine River STREAM 22.69 Miles FECAL COLIFORM Low Recreation criteria Primary Contact Not meeting IL_DG-04 La Moine River STREAM 11.38 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_DGD-01 Missouri Creek STREAM 27.55 Miles MANGANESE Aquatic Life Low criteria Little Missouri Not meeting IL_DGDA-01 STREAM 15 Miles MANGANESE Aquatic Life Low Creek criteria Little Missouri Not meeting IL_DGDA-01 STREAM 15 Miles DISSOLVED OXYGEN Aquatic Life Low Creek criteria Table 1 Waters and Impairments Approved on Illinois 19 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_DGIA-03 Grindstone Creek STREAM 19.97 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria East Fork La Moine Not meeting IL_DGL-05 STREAM 22.27 Miles DISSOLVED OXYGEN Aquatic Life Low River criteria East Fork La Moine Not meeting IL_DGL-08 STREAM 4.48 Miles DISSOLVED OXYGEN Aquatic Life Low River criteria SEDIMENTATION/SILTATIO Not meeting IL_DGLC-01 Drowning Fork STREAM 18.83 Miles Aquatic Life Medium N threshold Not meeting IL_DGLC-01 Drowning Fork STREAM 18.83 Miles CHLORIDE Aquatic Life Low criteria TOTAL SUSPENDED Not meeting IL_DGLC-01 Drowning Fork STREAM 18.83 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_DGLC-01 Drowning Fork STREAM 18.83 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_DGO-01 Rock Creek STREAM 13.48 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_DGP La Harpe Creek STREAM 19.27 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_DGP La Harpe Creek STREAM 19.27 Miles MANGANESE Aquatic Life Low criteria Not meeting IL_DGP-01 La Harpe Creek STREAM 7.52 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_DGP-01 La Harpe Creek STREAM 7.52 Miles MANGANESE Aquatic Life Low criteria Not meeting IL_DGPC-01 Baptist Creek STREAM 14.29 Miles MANGANESE Aquatic Life Low criteria TOTAL SUSPENDED Not meeting IL_DGZN-01 Prairie Creek STREAM 10.57 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_DGZN-01 Prairie Creek STREAM 10.57 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_DGZN-01 Prairie Creek STREAM 10.57 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold South Branch La Not meeting IL_DGZR STREAM 16.8 Miles PHOSPHORUS, TOTAL Aquatic Life Low Moine River threshold South Branch La Not meeting IL_DGZR STREAM 16.8 Miles DISSOLVED OXYGEN Aquatic Life Low Moine River criteria South Branch La Not meeting IL_DGZR STREAM 16.8 Miles AMMONIA, TOTAL Aquatic Life Low Moine River criteria South Branch La Not meeting IL_DGZR STREAM 16.8 Miles MANGANESE Aquatic Life Low Moine River criteria Primary Contact Not meeting IL_DH-01 Sugar Creek STREAM 42.55 Miles FECAL COLIFORM Low Recreation criteria Primary Contact Not meeting IL_DJ-02 Spoon River STREAM 24.55 Miles FECAL COLIFORM Medium Recreation criteria Table 1 Waters and Impairments Approved on Illinois 20 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Primary Contact Not meeting IL_DJ-06 Spoon River STREAM 25.62 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_DJ-06 Spoon River STREAM 25.62 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_DJ-08 Spoon River STREAM 35.07 Miles FECAL COLIFORM Medium Recreation criteria Primary Contact Not meeting IL_DJ-09 Spoon River STREAM 33.77 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_DJ-09 Spoon River STREAM 33.77 Miles MERCURY Fish Consumption Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_DJBZ-01 Slug Run STREAM 5.62 Miles Aquatic Life Medium N threshold TOTAL SUSPENDED Not meeting IL_DJFC Indian Creek STREAM 8.92 Miles Aquatic Life Medium SOLIDS (TSS) threshold SEDIMENTATION/SILTATIO Not meeting IL_DJFC Indian Creek STREAM 8.92 Miles Aquatic Life Medium N threshold Not meeting IL_DJFC Indian Creek STREAM 8.92 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_DJFCA Dago Slough STREAM 3.5 Miles Aquatic Life Medium N threshold Not meeting IL_DJFCA Dago Slough STREAM 3.5 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_DJMAA Prince Run STREAM 8.65 Miles FLUORIDE Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_DJMAA Prince Run STREAM 8.65 Miles Aquatic Life Medium N threshold Not meeting IL_DK-04 Mackinaw River STREAM 10.42 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_DK-04 Mackinaw River STREAM 10.42 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DK-12 Mackinaw River STREAM 29.53 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_DK-12 Mackinaw River STREAM 29.53 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_DK-13 Mackinaw River STREAM 11.47 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DK-13 Mackinaw River STREAM 11.47 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_DK-13 Mackinaw River STREAM 11.47 Miles FECAL COLIFORM Low Recreation criteria POLYCHLORINATED Not meeting IL_DK-15 Mackinaw River STREAM 5.22 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DK-15 Mackinaw River STREAM 5.22 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 21 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING POLYCHLORINATED Not meeting IL_DK-17 Mackinaw River STREAM 18.7 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Public and Food Not meeting IL_DK-17 Mackinaw River STREAM 18.7 Miles NITROGEN, NITRATE Processing Water Low criteria Supplies Not meeting IL_DK-17 Mackinaw River STREAM 18.7 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_DK-19 Mackinaw River STREAM 9.42 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_DK-19 Mackinaw River STREAM 9.42 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DK-20 Mackinaw River STREAM 21.68 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_DK-20 Mackinaw River STREAM 21.68 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_DK-21 Mackinaw River STREAM 23.21 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DK-21 Mackinaw River STREAM 23.21 Miles MERCURY Fish Consumption Medium threshold Hickory Grove Not meeting IL_DKB-01 STREAM 4.42 Miles DISSOLVED OXYGEN Aquatic Life Low Ditch criteria Hickory Grove SEDIMENTATION/SILTATIO Not meeting IL_DKB-01 STREAM 4.42 Miles Aquatic Life Medium Ditch N threshold Hickory Grove Not meeting IL_DKB-01 STREAM 4.42 Miles MANGANESE Aquatic Life Low Ditch threshold Not meeting IL_DKC-01 Dillon Creek STREAM 18 Miles CAUSE UNKNOWN Aquatic Life Medium threshold TOTAL SUSPENDED Not meeting IL_DKD-01 Indian Creek STREAM 6.38 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_DKD-01 Indian Creek STREAM 6.38 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_DKN-01 Sixmile Creek STREAM 10.15 Miles DISSOLVED OXYGEN Aquatic Life Low criteria SEDIMENTATION/SILTATIO Not meeting IL_DKN-01 Sixmile Creek STREAM 10.15 Miles Aquatic Life Medium N threshold Not meeting IL_DL-01 Kickapoo Creek STREAM 20.83 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_DL-01 Kickapoo Creek STREAM 20.83 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DL-07 Kickapoo Creek STREAM 25.52 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_DL-07 Kickapoo Creek STREAM 25.52 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Table 1 Waters and Impairments Approved on Illinois 22 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_DLH Fargo Run STREAM 9.35 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Primary Contact Not meeting IL_DM Senachwine Creek STREAM 29.08 Miles FECAL COLIFORM Medium Recreation criteria Primary Contact Not meeting IL_DO-01 Crow Creek-East STREAM 17.98 Miles FECAL COLIFORM Medium Recreation criteria Primary Contact Not meeting IL_DP-02 Sandy Creek STREAM 30.22 Miles FECAL COLIFORM Medium Recreation criteria POLYCHLORINATED Not meeting IL_DQ-01 Big Bureau Creek STREAM 9.61 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DQ-01 Big Bureau Creek STREAM 9.61 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_DQ-02 Big Bureau Creek STREAM 16.4 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DQ-02 Big Bureau Creek STREAM 16.4 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_DQ-03 Big Bureau Creek STREAM 5.4 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_DQ-03 Big Bureau Creek STREAM 5.4 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_DQ-04 Big Bureau Creek STREAM 4.68 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DQ-04 Big Bureau Creek STREAM 4.68 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_DQ-04 Big Bureau Creek STREAM 4.68 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_DQ-05 Big Bureau Creek STREAM 37.67 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_DQ-05 Big Bureau Creek STREAM 37.67 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DQA-01 East Bureau Creek STREAM 26.76 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Little Vermilion Not meeting IL_DR STREAM 4.26 Miles CAUSE UNKNOWN Aquatic Life Medium River threshold Little Vermilion Not meeting IL_DR-01 STREAM 3.79 Miles PHOSPHORUS, TOTAL Aquatic Life Medium River threshold Little Vermilion TOTAL SUSPENDED Not meeting IL_DR-01 STREAM 3.79 Miles Aquatic Life Medium River SOLIDS (TSS) threshold Not meeting IL_DRD Mendota Creek STREAM 6.06 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Primary Contact Not meeting IL_DS-06 Vermilion River STREAM 14.11 Miles FECAL COLIFORM Low Recreation criteria Table 1 Waters and Impairments Approved on Illinois 23 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Public and Food Not meeting IL_DS-06 Vermilion River STREAM 14.11 Miles NITROGEN, NITRATE Processing Water Low criteria Supplies Not meeting IL_DS-06 Vermilion River STREAM 14.11 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_DS-07 Vermilion River STREAM 26.38 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_DS-07 Vermilion River STREAM 26.38 Miles MERCURY Fish Consumption Medium threshold Public and Food Not meeting IL_DS-10 Vermilion River STREAM 16.09 Miles NITROGEN, NITRATE Processing Water Low criteria Supplies Not meeting IL_DSA-02 Bailey Creek STREAM 14.68 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_DSFA Mole Creek STREAM 17.82 Miles Aquatic Life Medium N threshold Not meeting IL_DSI Ida Creek STREAM 6.11 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_DSL-01 Wolf Creek STREAM 19.11 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_DSLB Deer Creek STREAM 6.25 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_DSLC North Creek STREAM 6.15 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_DSQC-01 Kelly Creek STREAM 11.44 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria TOTAL SUSPENDED Not meeting IL_DSQC-01 Kelly Creek STREAM 11.44 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_DSQC-01 Kelly Creek STREAM 11.44 Miles IRON Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_DSQC-01 Kelly Creek STREAM 11.44 Miles Aquatic Life Medium N threshold Not meeting IL_DSQZA Cullom WSS Trib STREAM 3.34 Miles BORON Aquatic Life Medium criteria Not meeting IL_DSQZA Cullom WSS Trib STREAM 3.34 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_DT-01 Fox River STREAM 3.23 Miles Aquatic Life Medium N threshold Not meeting IL_DT-01 Fox River STREAM 3.23 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium criteria POLYCHLORINATED Not meeting IL_DT-01 Fox River STREAM 3.23 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_DT-01 Fox River STREAM 3.23 Miles FECAL COLIFORM Medium Recreation criteria Table 1 Waters and Impairments Approved on Illinois 24 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_DT-01 Fox River STREAM 3.23 Miles PH Aquatic Life Medium criteria Not meeting IL_DT-01 Fox River STREAM 3.23 Miles MERCURY Fish Consumption Medium threshold TOTAL SUSPENDED Not meeting IL_DT-01 Fox River STREAM 3.23 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_DT-02 Fox River STREAM 11 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_DT-02 Fox River STREAM 11 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_DT-03 Fox River STREAM 7.37 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_DT-03 Fox River STREAM 7.37 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_DT-03 Fox River STREAM 7.37 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_DT-03 Fox River STREAM 7.37 Miles MERCURY Fish Consumption Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_DT-03 Fox River STREAM 7.37 Miles Aquatic Life Medium N threshold Not meeting IL_DT-03 Fox River STREAM 7.37 Miles PH Aquatic Life Medium criteria Not meeting IL_DT-03 Fox River STREAM 7.37 Miles ALDRIN Aquatic Life Medium threshold Not meeting IL_DT-03 Fox River STREAM 7.37 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria TOTAL SUSPENDED Not meeting IL_DT-03 Fox River STREAM 7.37 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_DT-03 Fox River STREAM 7.37 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium criteria Not meeting IL_DT-06 Fox River STREAM 8.06 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_DT-06 Fox River STREAM 8.06 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_DT-06 Fox River STREAM 8.06 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DT-09 Fox River STREAM 8.15 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_DT-09 Fox River STREAM 8.15 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold Not meeting IL_DT-09 Fox River STREAM 8.15 Miles METHOXYCHLOR Aquatic Life Medium threshold Not meeting IL_DT-09 Fox River STREAM 8.15 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 25 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Primary Contact Not meeting IL_DT-09 Fox River STREAM 8.15 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_DT-09 Fox River STREAM 8.15 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium criteria POLYCHLORINATED Not meeting IL_DT-09 Fox River STREAM 8.15 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_DT-11 Fox River STREAM 5 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DT-11 Fox River STREAM 5 Miles ALDRIN Aquatic Life Medium threshold Not meeting IL_DT-11 Fox River STREAM 5 Miles MERCURY Fish Consumption Medium threshold TOTAL SUSPENDED Not meeting IL_DT-11 Fox River STREAM 5 Miles Aquatic Life Medium SOLIDS (TSS) threshold Primary Contact Not meeting IL_DT-11 Fox River STREAM 5 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_DT-11 Fox River STREAM 5 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium criteria Not meeting IL_DT-11 Fox River STREAM 5 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_DT-11 Fox River STREAM 5 Miles Aquatic Life Medium N threshold POLYCHLORINATED Not meeting IL_DT-18 Fox River STREAM 5.9 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold TOTAL SUSPENDED Not meeting IL_DT-18 Fox River STREAM 5.9 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_DT-18 Fox River STREAM 5.9 Miles MERCURY Fish Consumption Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_DT-18 Fox River STREAM 5.9 Miles Aquatic Life Medium N threshold Not meeting IL_DT-18 Fox River STREAM 5.9 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_DT-18 Fox River STREAM 5.9 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold Primary Contact Not meeting IL_DT-18 Fox River STREAM 5.9 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_DT-20 Fox River STREAM 7.23 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_DT-20 Fox River STREAM 7.23 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DT-20 Fox River STREAM 7.23 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_DT-22 Fox River STREAM 7.86 Miles CHLORIDE Aquatic Life Medium criteria Table 1 Waters and Impairments Approved on Illinois 26 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_DT-22 Fox River STREAM 7.86 Miles COPPER Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_DT-22 Fox River STREAM 7.86 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold SEDIMENTATION/SILTATIO Not meeting IL_DT-22 Fox River STREAM 7.86 Miles Aquatic Life Medium N threshold Not meeting IL_DT-22 Fox River STREAM 7.86 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_DT-22 Fox River STREAM 7.86 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_DT-23 Fox River STREAM 7.77 Miles CAUSE UNKNOWN Aquatic Life Medium threshold POLYCHLORINATED Not meeting IL_DT-23 Fox River STREAM 7.77 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DT-23 Fox River STREAM 7.77 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_DT-35 Fox River STREAM 5.03 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_DT-35 Fox River STREAM 5.03 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_DT-35 Fox River STREAM 5.03 Miles FECAL COLIFORM Medium Recreation threshold SEDIMENTATION/SILTATIO Not meeting IL_DT-35 Fox River STREAM 5.03 Miles Aquatic Life Medium N threshold Not meeting IL_DT-36 Fox River STREAM 2.63 Miles PH Aquatic Life Medium criteria Not meeting IL_DT-36 Fox River STREAM 2.63 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_DT-36 Fox River STREAM 2.63 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium criteria POLYCHLORINATED Not meeting IL_DT-36 Fox River STREAM 2.63 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DT-38 Fox River STREAM 10.83 Miles PH Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_DT-38 Fox River STREAM 10.83 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DT-38 Fox River STREAM 10.83 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium criteria Not meeting IL_DT-38 Fox River STREAM 10.83 Miles MERCURY Fish Consumption Medium threshold TOTAL SUSPENDED Not meeting IL_DT-38 Fox River STREAM 10.83 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_DT-38 Fox River STREAM 10.83 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Table 1 Waters and Impairments Approved on Illinois 27 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Primary Contact Not meeting IL_DT-38 Fox River STREAM 10.83 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_DT-41 Fox River STREAM 11.01 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_DT-41 Fox River STREAM 11.01 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium criteria POLYCHLORINATED Not meeting IL_DT-41 Fox River STREAM 11.01 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_DT-46 Fox River STREAM 3.71 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DT-46 Fox River STREAM 3.71 Miles MERCURY Fish Consumption Medium threshold TOTAL SUSPENDED Not meeting IL_DT-46 Fox River STREAM 3.71 Miles Aquatic Life Medium SOLIDS (TSS) threshold SEDIMENTATION/SILTATIO Not meeting IL_DT-46 Fox River STREAM 3.71 Miles Aquatic Life Medium N threshold Not meeting IL_DT-46 Fox River STREAM 3.71 Miles PH Aquatic Life Medium criteria Primary Contact Not meeting IL_DT-58 Fox River STREAM 3.76 Miles FECAL COLIFORM Medium Recreation criteria POLYCHLORINATED Not meeting IL_DT-58 Fox River STREAM 3.76 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DT-58 Fox River STREAM 3.76 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_DT-58 Fox River STREAM 3.76 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_DT-69 Fox River STREAM 4.51 Miles METHOXYCHLOR Aquatic Life Medium threshold Not meeting IL_DT-69 Fox River STREAM 4.51 Miles PH Aquatic Life Medium criteria Not meeting IL_DT-69 Fox River STREAM 4.51 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_DT-69 Fox River STREAM 4.51 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DT-69 Fox River STREAM 4.51 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Primary Contact Not meeting IL_DT-69 Fox River STREAM 4.51 Miles FECAL COLIFORM Medium Recreation criteria SEDIMENTATION/SILTATIO Not meeting IL_DT-69 Fox River STREAM 4.51 Miles Aquatic Life Medium N threshold Primary Contact Not meeting IL_DTAB-01 Little Indian Creek STREAM 17.42 Miles FECAL COLIFORM Medium Recreation criteria Primary Contact Not meeting IL_DTD-02 Blackberry Creek STREAM 17.77 Miles FECAL COLIFORM Medium Recreation criteria Table 1 Waters and Impairments Approved on Illinois 28 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Primary Contact Not meeting IL_DTF-02 Ferson Creek STREAM 14.63 Miles FECAL COLIFORM Medium Recreation criteria Primary Contact Not meeting IL_DTG-02 Poplar Creek STREAM 15.01 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_DTG-02 Poplar Creek STREAM 15.01 Miles CHLORIDE Aquatic Life Medium criteria TOTAL SUSPENDED Not meeting IL_DTG-02 Poplar Creek STREAM 15.01 Miles Aquatic Life Medium SOLIDS (TSS) threshold Primary Contact Not meeting IL_DTK-04 Nippersink Creek STREAM 16.71 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_DTK-04 Nippersink Creek STREAM 16.71 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_DTK-04 Nippersink Creek STREAM 16.71 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DTK-06 Nippersink Creek STREAM 17.02 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_DTK-06 Nippersink Creek STREAM 17.02 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DTK-06 Nippersink Creek STREAM 17.02 Miles NICKEL Aquatic Life Medium threshold Not meeting IL_DTK-06 Nippersink Creek STREAM 17.02 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_DTK-06 Nippersink Creek STREAM 17.02 Miles ALDRIN Aquatic Life Medium threshold Primary Contact Not meeting IL_DTK-06 Nippersink Creek STREAM 17.02 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_DTRA-W-C1 Fiddle Creek STREAM 2.04 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_DTRA-W-C1 Fiddle Creek STREAM 2.04 Miles CHLORIDE Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_DTRA-W-C1 Fiddle Creek STREAM 2.04 Miles Aquatic Life Medium N threshold Not meeting IL_DTRA-W-C1 Fiddle Creek STREAM 2.04 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_DTR-W-C3 Slocum Lake Drain STREAM 1.08 Miles PH Aquatic Life Medium criteria Not meeting IL_DTR-W-C3 Slocum Lake Drain STREAM 1.08 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_DTR-W-C3 Slocum Lake Drain STREAM 1.08 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_DTR-W-C3 Slocum Lake Drain STREAM 1.08 Miles Aquatic Life Medium N threshold Not meeting IL_DTR-W-D1 Slocum Lake Drain STREAM 0.92 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Table 1 Waters and Impairments Approved on Illinois 29 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_DTR-W-D1 Slocum Lake Drain STREAM 0.92 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_DTR-W-D1 Slocum Lake Drain STREAM 0.92 Miles PH Aquatic Life Medium criteria Not meeting IL_DTR-W-D1 Slocum Lake Drain STREAM 0.92 Miles BOTTOM DEPOSITS Aesthetic Quality Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_DTR-W-D1 Slocum Lake Drain STREAM 0.92 Miles Aquatic Life Medium N threshold Primary Contact Not meeting IL_DTZK Indian Creek STREAM 7.86 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_DTZK Indian Creek STREAM 7.86 Miles CHLORIDE Aquatic Life Medium criteria Primary Contact Not meeting IL_DTZL-01 Mill Creek-North STREAM 3.34 Miles FECAL COLIFORM Medium Recreation criteria Primary Contact Not meeting IL_DTZO-01 Brewster Creek STREAM 5.42 Miles FECAL COLIFORM Medium Recreation criteria Primary Contact Not meeting IL_DTZP-02 Tyler Creek STREAM 16.38 Miles FECAL COLIFORM Medium Recreation criteria Primary Contact Not meeting IL_DTZR-01 Crystal Lake Outlet STREAM 6.54 Miles FECAL COLIFORM Medium Recreation criteria Primary Contact Not meeting IL_DTZS-01 Flint Creek STREAM 10.45 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_DTZS-01 Flint Creek STREAM 10.45 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_DTZS-01 Flint Creek STREAM 10.45 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_DV-04 Mazon River STREAM 18.74 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_DV-04 Mazon River STREAM 18.74 Miles FECAL COLIFORM Medium Recreation criteria POLYCHLORINATED Not meeting IL_DV-04 Mazon River STREAM 18.74 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_DV-06 Mazon River STREAM 8.26 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_DV-06 Mazon River STREAM 8.26 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_DW-01 Aux Sable Creek STREAM 21.06 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_DZAG Sandy Creek STREAM 5.01 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold East Branch Not meeting IL_DZHC STREAM 20.14 Miles CAUSE UNKNOWN Aquatic Life Medium Copperas Creek threshold Not meeting IL_DZI Lamarsh Creek STREAM 2.15 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Table 1 Waters and Impairments Approved on Illinois 30 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING West Branch Not meeting IL_DZIA STREAM 12.76 Miles CAUSE UNKNOWN Aquatic Life Medium Lamarsh Creek threshold Not meeting IL_DZIAA Largent Creek STREAM 4.32 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_DZS Covel Creek STREAM 18.49 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_DZZP-03 Farm Creek STREAM 20.18 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria TOTAL SUSPENDED Not meeting IL_DZZP-03 Farm Creek STREAM 20.18 Miles Aquatic Life Low SOLIDS (TSS) threshold Not meeting IL_DZZP-03 Farm Creek STREAM 20.18 Miles PH Aquatic Life Low criteria Not meeting IL_DZZP-03 Farm Creek STREAM 20.18 Miles PHOSPHORUS, TOTAL Aquatic Life Low threshold POLYCHLORINATED Not meeting IL_E-04 Sangamon River STREAM 15.78 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_E-05 Sangamon River STREAM 13.58 Miles CHLORIDE Aquatic Life Medium criteria Not meeting IL_E-05 Sangamon River STREAM 13.58 Miles NICKEL Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_E-05 Sangamon River STREAM 13.58 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_E-05 Sangamon River STREAM 13.58 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_E-06 Sangamon River STREAM 1.19 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_E-09 Sangamon River STREAM 2.52 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_E-16 Sangamon River STREAM 27.48 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_E-24 Sangamon River STREAM 23.11 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_E-24 Sangamon River STREAM 23.11 Miles FECAL COLIFORM Medium Recreation criteria POLYCHLORINATED Not meeting IL_E-25 Sangamon River STREAM 36.42 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_E-25 Sangamon River STREAM 36.42 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_E-26 Sangamon River STREAM 12.05 Miles PH Aquatic Life Medium criteria Not meeting IL_E-26 Sangamon River STREAM 12.05 Miles SILVER Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_E-26 Sangamon River STREAM 12.05 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Table 1 Waters and Impairments Approved on Illinois 31 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_E-26 Sangamon River STREAM 12.05 Miles NICKEL Aquatic Life Medium criteria Not meeting IL_E-26 Sangamon River STREAM 12.05 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Primary Contact Not meeting IL_E-26 Sangamon River STREAM 12.05 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_E-95 Sangamon River STREAM 5.89 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_EEA-01 Cox Creek STREAM 12.16 Miles IRON Aquatic Life Medium criteria Not meeting IL_EG-01 Clary Creek STREAM 19.63 Miles PH Aquatic Life Medium criteria Not meeting IL_EH-01 Crane Creek STREAM 10.69 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_EHH Central Ditch STREAM 14.65 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_EID-C1 Sugar Creek STREAM 23.91 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold U-Trib Middle Fork Not meeting IL_EIDEB-01 STREAM 6.81 Miles DISSOLVED OXYGEN Aquatic Life Medium Sugar Creek criteria Not meeting IL_EIED Prairie Creek STREAM 10.47 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_EIG-01 Lake Fork STREAM 21.4 Miles TEMPERATURE Aquatic Life Medium criteria Not meeting IL_EK-01 Richland Creek STREAM 19.28 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_EL-01 Spring Creek-West STREAM 9.27 Miles PH Aquatic Life Medium criteria Not meeting IL_EL-01 Spring Creek-West STREAM 9.27 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_EL-01 Spring Creek-West STREAM 9.27 Miles Aquatic Life Medium N threshold POLYCHLORINATED Not meeting IL_EL-01 Spring Creek-West STREAM 9.27 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_EL-03 Spring Creek-West STREAM 27.94 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_EM Fancy Creek STREAM 14.79 Miles CAUSE UNKNOWN Aquatic Life Medium threshold South Fork Not meeting IL_EO-01 STREAM 19.04 Miles CHLORDANE Fish Consumption Medium Sangamon River threshold South Fork Not meeting IL_EO-01 STREAM 19.04 Miles PH Aquatic Life Medium Sangamon River criteria South Fork Not meeting IL_EO-01 STREAM 19.04 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Sangamon River threshold Table 1 Waters and Impairments Approved on Illinois 32 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING South Fork Not meeting IL_EO-02 STREAM 16.26 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Sangamon River threshold South Fork Not meeting IL_EO-02 STREAM 16.26 Miles DISSOLVED OXYGEN Aquatic Life Medium Sangamon River criteria South Fork SEDIMENTATION/SILTATIO Not meeting IL_EO-02 STREAM 16.26 Miles Aquatic Life Medium Sangamon River N threshold South Fork TOTAL SUSPENDED Not meeting IL_EO-02 STREAM 16.26 Miles Aquatic Life Medium Sangamon River SOLIDS (TSS) threshold South Fork Not meeting IL_EO-02 STREAM 16.26 Miles IRON Aquatic Life Medium Sangamon River criteria South Fork Not meeting IL_EO-02 STREAM 16.26 Miles CHLORDANE Fish Consumption Medium Sangamon River threshold South Fork Not meeting IL_EO-04 STREAM 10.55 Miles CHLORDANE Fish Consumption Medium Sangamon River threshold South Fork TOTAL SUSPENDED Not meeting IL_EO-05 STREAM 13.78 Miles Aquatic Life Medium Sangamon River SOLIDS (TSS) threshold South Fork Not meeting IL_EO-05 STREAM 13.78 Miles CHLORDANE Fish Consumption Medium Sangamon River threshold South Fork Not meeting IL_EO-05 STREAM 13.78 Miles DISSOLVED OXYGEN Aquatic Life Medium Sangamon River criteria South Fork SEDIMENTATION/SILTATIO Not meeting IL_EO-05 STREAM 13.78 Miles Aquatic Life Medium Sangamon River N threshold South Fork Not meeting IL_EO-05 STREAM 13.78 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Sangamon River threshold South Fork Not meeting IL_EO-13 STREAM 20.73 Miles CHLORDANE Fish Consumption Medium Sangamon River threshold Not meeting IL_EOA-01 Sugar Creek STREAM 4.04 Miles BORON Aquatic Life Low criteria Not meeting IL_EOA-04 Sugar Creek STREAM 34.28 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_EOA-04 Sugar Creek STREAM 34.28 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_EOA-06 Sugar Creek STREAM 3.2 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_EOA-06 Sugar Creek STREAM 3.2 Miles BORON Aquatic Life Low criteria Not meeting IL_EOAA-01 Lick Creek STREAM 27.55 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_EOAD-11 Hoover Branch STREAM 2.95 Miles Aquatic Life Medium N threshold SEDIMENTATION/SILTATIO Not meeting IL_EOC-02 Horse Creek STREAM 35.86 Miles Aquatic Life Medium N threshold Not meeting IL_EOC-02 Horse Creek STREAM 35.86 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Table 1 Waters and Impairments Approved on Illinois 33 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_EOCA-02 Brush Creek STREAM 15.68 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_EOCA-04 Brush Creek STREAM 8.74 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_EOE-05 Panther Creek STREAM 4.86 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_EOE-05 Panther Creek STREAM 4.86 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_EOF-05 Bear Creek STREAM 23.67 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Primary Contact Not meeting IL_EOH-02 Flat Branch STREAM 22.72 Miles FECAL COLIFORM Low Recreation criteria Old Sangamon SEDIMENTATION/SILTATIO Not meeting IL_ER STREAM 1.59 Miles Aquatic Life Medium River N threshold SEDIMENTATION/SILTATIO Not meeting IL_ERA-01 Long Point Slough STREAM 3.96 Miles Aquatic Life Medium N threshold SEDIMENTATION/SILTATIO Not meeting IL_ERAA Willow Branch STREAM 12.11 Miles Aquatic Life Medium N threshold Not meeting IL_EY-01 Drummer Creek STREAM 18.97 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_EZM-02 Buckhart Creek STREAM 26.86 Miles Aquatic Life Medium N threshold Not meeting IL_EZS Wildcat Creek STREAM 6.22 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_EZZP-01 Corn Valley Creek STREAM 6.16 Miles CAUSE UNKNOWN Aquatic Life Medium threshold POLYCHLORINATED Not meeting IL_F-01 Kankakee River STREAM 6.25 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_F-01 Kankakee River STREAM 6.25 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_F-02 Kankakee River STREAM 12.43 Miles FECAL COLIFORM Medium Recreation threshold Not meeting IL_F-02 Kankakee River STREAM 12.43 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_F-03 Kankakee River STREAM 7.1 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_F-04 Kankakee River STREAM 8.8 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_F-04 Kankakee River STREAM 8.8 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_F-12 Kankakee River STREAM 15.48 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_F-12 Kankakee River STREAM 15.48 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Table 1 Waters and Impairments Approved on Illinois 34 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING POLYCHLORINATED Not meeting IL_F-16 Kankakee River STREAM 8.22 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_F-16 Kankakee River STREAM 8.22 Miles MERCURY Fish Consumption Medium threshold East Branch Horse Not meeting IL_FCC-01 STREAM 15.15 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium Creek threshold Black Walnut Not meeting IL_FFBA STREAM 13.87 Miles CHLORINE Aquatic Life Medium Creek criteria Black Walnut Not meeting IL_FFBA STREAM 13.87 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Creek threshold Not meeting IL_FLD-03 Beaver Creek STREAM 21.57 Miles MERCURY Fish Consumption Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_FLDA-01 Little Beaver Creek STREAM 18.67 Miles Aquatic Life Medium N threshold Not meeting IL_FLE-02 Langan Creek STREAM 0.78 Miles PHOSPHORUS, TOTAL Aquatic Life Low threshold Not meeting IL_FLE-02 Langan Creek STREAM 0.78 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_FLE-02 Langan Creek STREAM 0.78 Miles BORON Aquatic Life Low criteria Not meeting IL_FLE-02 Langan Creek STREAM 0.78 Miles AMMONIA, TOTAL Aquatic Life Low criteria SEDIMENTATION/SILTATIO Not meeting IL_FLEA-C1 Clifton North Creek STREAM 1.51 Miles Aquatic Life Medium N threshold Not meeting IL_FLEA-C1 Clifton North Creek STREAM 1.51 Miles BORON Aquatic Life Low criteria Not meeting IL_FLEA-C1 Clifton North Creek STREAM 1.51 Miles PHOSPHORUS, TOTAL Aquatic Life Low threshold Not meeting IL_FLEA-C1 Clifton North Creek STREAM 1.51 Miles AMMONIA, TOTAL Aquatic Life Low criteria Not meeting IL_FLEA-C1 Clifton North Creek STREAM 1.51 Miles COPPER Aquatic Life Low criteria Not meeting IL_FLEA-C1 Clifton North Creek STREAM 1.51 Miles DISSOLVED OXYGEN Aquatic Life Low criteria SEDIMENTATION/SILTATIO Not meeting IL_FLF-01 Pike Creek STREAM 18.31 Miles Aquatic Life Medium N threshold Not meeting IL_FLF-01 Pike Creek STREAM 18.31 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_FLG Prairie Creek STREAM 29.72 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_FLGB-C1 Ashkum Creek STREAM 2.84 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_FLGB-C1 Ashkum Creek STREAM 2.84 Miles BORON Aquatic Life Low criteria Table 1 Waters and Impairments Approved on Illinois 35 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_FLGB-C1 Ashkum Creek STREAM 2.84 Miles PHOSPHORUS, TOTAL Aquatic Life Low threshold Not meeting IL_FLGB-C1 Ashkum Creek STREAM 2.84 Miles AMMONIA, TOTAL Aquatic Life Low criteria Not meeting IL_FLGB-C4 Ashkum Creek STREAM 2.61 Miles BORON Aquatic Life Low criteria SEDIMENTATION/SILTATIO Not meeting IL_FLGB-C4 Ashkum Creek STREAM 2.61 Miles Aquatic Life Medium N threshold SEDIMENTATION/SILTATIO Not meeting IL_FLGZ-C1 Clifton South Creek STREAM 2.18 Miles Aquatic Life Medium N threshold Not meeting IL_FLGZ-C1 Clifton South Creek STREAM 2.18 Miles AMMONIA, TOTAL Aquatic Life Low criteria Not meeting IL_FLGZ-C1 Clifton South Creek STREAM 2.18 Miles BORON Aquatic Life Low criteria Not meeting IL_FLGZ-C1 Clifton South Creek STREAM 2.18 Miles PHOSPHORUS, TOTAL Aquatic Life Low threshold Not meeting IL_FLGZ-C1 Clifton South Creek STREAM 2.18 Miles DISSOLVED OXYGEN Aquatic Life Low criteria SEDIMENTATION/SILTATIO Not meeting IL_FLH-02 Spring Creek STREAM 63.9 Miles Aquatic Life Medium N threshold Not meeting IL_FLH-02 Spring Creek STREAM 63.9 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_FLHA-01 Shavetail Creek STREAM 9.01 Miles Aquatic Life Medium N threshold Not meeting IL_FLHA-01 Shavetail Creek STREAM 9.01 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria TOTAL SUSPENDED Not meeting IL_FLHA-01 Shavetail Creek STREAM 9.01 Miles Aquatic Life Medium SOLIDS (TSS) threshold SEDIMENTATION/SILTATIO Not meeting IL_FLHB-01 Louis Creek STREAM 12 Miles Aquatic Life Medium N threshold Not meeting IL_FLI-02 Sugar Creek STREAM 23.65 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_FLI-03 Sugar Creek STREAM 15.11 Miles MERCURY Fish Consumption Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_FLIB Jefferson Creek STREAM 10.57 Miles Aquatic Life Medium N threshold SEDIMENTATION/SILTATIO Not meeting IL_FLID-01 Mud Creek-West STREAM 9.33 Miles Aquatic Life Medium N threshold Not meeting IL_FLIDB Gay Creek STREAM 12.97 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Primary Contact Not meeting IL_FLIDD-01 Pigeon Creek STREAM 4.82 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_FLIDD-01 Pigeon Creek STREAM 4.82 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Table 1 Waters and Impairments Approved on Illinois 36 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING U-Trib Mud Creek- SEDIMENTATION/SILTATIO Not meeting IL_FLIDE-01 STREAM 15.5 Miles Aquatic Life Medium West N threshold U-Trib Mud Creek- Not meeting IL_FLIDE-01 STREAM 15.5 Miles DISSOLVED OXYGEN Aquatic Life Medium West criteria POLYCHLORINATED Not meeting IL_G-03 Des Plaines River STREAM 8.41 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_G-03 Des Plaines River STREAM 8.41 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_G-03 Des Plaines River STREAM 8.41 Miles PH Aquatic Life Medium criteria Primary Contact Not meeting IL_G-03 Des Plaines River STREAM 8.41 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_G-03 Des Plaines River STREAM 8.41 Miles CHLORIDE Aquatic Life Medium criteria Not meeting IL_G-03 Des Plaines River STREAM 8.41 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_G-07 Des Plaines River STREAM 10.78 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_G-07 Des Plaines River STREAM 10.78 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Primary Contact Not meeting IL_G-07 Des Plaines River STREAM 10.78 Miles FECAL COLIFORM Medium Recreation criteria POLYCHLORINATED Not meeting IL_G-07 Des Plaines River STREAM 10.78 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_G-07 Des Plaines River STREAM 10.78 Miles CHLORIDE Aquatic Life Medium criteria Not meeting IL_G-07 Des Plaines River STREAM 10.78 Miles ARSENIC Aquatic Life Medium threshold Not meeting IL_G-08 Des Plaines River STREAM 0.97 Miles MERCURY Fish Consumption Medium threshold TOTAL SUSPENDED Not meeting IL_G-08 Des Plaines River STREAM 0.97 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_G-08 Des Plaines River STREAM 0.97 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_G-11 Des Plaines River STREAM 9.05 Miles CHLORIDE Aquatic Life Medium criteria Not meeting IL_G-11 Des Plaines River STREAM 9.05 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_G-11 Des Plaines River STREAM 9.05 Miles ARSENIC Aquatic Life Medium threshold Primary Contact Not meeting IL_G-11 Des Plaines River STREAM 9.05 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_G-11 Des Plaines River STREAM 9.05 Miles METHOXYCHLOR Aquatic Life Medium threshold Table 1 Waters and Impairments Approved on Illinois 37 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_G-11 Des Plaines River STREAM 9.05 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_G-11 Des Plaines River STREAM 9.05 Miles ALDRIN Aquatic Life Medium threshold POLYCHLORINATED Not meeting IL_G-11 Des Plaines River STREAM 9.05 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_G-11 Des Plaines River STREAM 9.05 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_G-12 Des Plaines River STREAM 8.5 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_G-12 Des Plaines River STREAM 8.5 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_G-15 Des Plaines River STREAM 3.52 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Primary Contact Not meeting IL_G-15 Des Plaines River STREAM 3.52 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_G-15 Des Plaines River STREAM 3.52 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold POLYCHLORINATED Not meeting IL_G-15 Des Plaines River STREAM 3.52 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_G-15 Des Plaines River STREAM 3.52 Miles MERCURY Fish Consumption Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_G-15 Des Plaines River STREAM 3.52 Miles Aquatic Life Medium N threshold Not meeting IL_G-15 Des Plaines River STREAM 3.52 Miles CHLORIDE Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_G-22 Des Plaines River STREAM 4.31 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_G-22 Des Plaines River STREAM 4.31 Miles METHOXYCHLOR Aquatic Life Medium threshold Not meeting IL_G-22 Des Plaines River STREAM 4.31 Miles CHLORIDE Aquatic Life Medium criteria Not meeting IL_G-22 Des Plaines River STREAM 4.31 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold TOTAL SUSPENDED Not meeting IL_G-22 Des Plaines River STREAM 4.31 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_G-22 Des Plaines River STREAM 4.31 Miles ARSENIC Aquatic Life Medium threshold Primary Contact Not meeting IL_G-22 Des Plaines River STREAM 4.31 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_G-22 Des Plaines River STREAM 4.31 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_G-23 Des Plaines River STREAM 3.82 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 38 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING POLYCHLORINATED Not meeting IL_G-23 Des Plaines River STREAM 3.82 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Indigenous Aquatic Not meeting IL_G-23 Des Plaines River STREAM 3.82 Miles DISSOLVED OXYGEN Medium Life criteria Not meeting IL_G-24 Des Plaines River STREAM 5.2 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_G-24 Des Plaines River STREAM 5.2 Miles FECAL COLIFORM Medium Recreation criteria POLYCHLORINATED Not meeting IL_G-24 Des Plaines River STREAM 5.2 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold TOTAL SUSPENDED Not meeting IL_G-25 Des Plaines River STREAM 6.92 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_G-25 Des Plaines River STREAM 6.92 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_G-25 Des Plaines River STREAM 6.92 Miles Aquatic Life Medium N threshold Not meeting IL_G-25 Des Plaines River STREAM 6.92 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_G-25 Des Plaines River STREAM 6.92 Miles ARSENIC Aquatic Life Medium threshold Not meeting IL_G-26 Des Plaines River STREAM 6.01 Miles CAUSE UNKNOWN Aquatic Life Medium threshold POLYCHLORINATED Not meeting IL_G-26 Des Plaines River STREAM 6.01 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_G-26 Des Plaines River STREAM 6.01 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_G-28 Des Plaines River STREAM 9.02 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_G-28 Des Plaines River STREAM 9.02 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold POLYCHLORINATED Not meeting IL_G-28 Des Plaines River STREAM 9.02 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_G-28 Des Plaines River STREAM 9.02 Miles CHLORIDE Aquatic Life Medium criteria Not meeting IL_G-28 Des Plaines River STREAM 9.02 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_G-28 Des Plaines River STREAM 9.02 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_G-30 Des Plaines River STREAM 5.19 Miles MERCURY Fish Consumption Medium threshold TOTAL SUSPENDED Not meeting IL_G-30 Des Plaines River STREAM 5.19 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_G-30 Des Plaines River STREAM 5.19 Miles CHLORIDE Aquatic Life Medium criteria Table 1 Waters and Impairments Approved on Illinois 39 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Primary Contact Not meeting IL_G-30 Des Plaines River STREAM 5.19 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_G-30 Des Plaines River STREAM 5.19 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_G-30 Des Plaines River STREAM 5.19 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_G-30 Des Plaines River STREAM 5.19 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_G-32 Des Plaines River STREAM 6.18 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_G-32 Des Plaines River STREAM 6.18 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_G-32 Des Plaines River STREAM 6.18 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_G-32 Des Plaines River STREAM 6.18 Miles CHLORIDE Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_G-32 Des Plaines River STREAM 6.18 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_G-35 Des Plaines River STREAM 5 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold POLYCHLORINATED Not meeting IL_G-35 Des Plaines River STREAM 5 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_G-35 Des Plaines River STREAM 5 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_G-35 Des Plaines River STREAM 5 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_G-36 Des Plaines River STREAM 7.22 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_G-36 Des Plaines River STREAM 7.22 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_G-36 Des Plaines River STREAM 7.22 Miles FECAL COLIFORM Medium Recreation criteria POLYCHLORINATED Not meeting IL_G-36 Des Plaines River STREAM 7.22 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_G-39 Des Plaines River STREAM 11.25 Miles LINDANE Aquatic Life Medium threshold Not meeting IL_G-39 Des Plaines River STREAM 11.25 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_G-39 Des Plaines River STREAM 11.25 Miles METHOXYCHLOR Aquatic Life Medium threshold Not meeting IL_G-39 Des Plaines River STREAM 11.25 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_G-39 Des Plaines River STREAM 11.25 Miles FECAL COLIFORM Medium Recreation criteria Table 1 Waters and Impairments Approved on Illinois 40 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_G-39 Des Plaines River STREAM 11.25 Miles CHLORIDE Aquatic Life Medium criteria Not meeting IL_G-39 Des Plaines River STREAM 11.25 Miles PH Aquatic Life Medium criteria Not meeting IL_G-39 Des Plaines River STREAM 11.25 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold POLYCHLORINATED Not meeting IL_G-39 Des Plaines River STREAM 11.25 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_G-39 Des Plaines River STREAM 11.25 Miles ALDRIN Aquatic Life Medium threshold Not meeting IL_G-39 Des Plaines River STREAM 11.25 Miles ARSENIC Aquatic Life Medium threshold Not meeting IL_G-39 Des Plaines River STREAM 11.25 Miles CHROMIUM, TOTAL Aquatic Life Medium threshold Not meeting IL_GA-01 Grant Creek STREAM 11.4 Miles CAUSE UNKNOWN Aquatic Life Medium threshold POLYCHLORINATED Not meeting IL_GB-01 Du Page River STREAM 8.14 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_GB-01 Du Page River STREAM 8.14 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_GB-01 Du Page River STREAM 8.14 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_GB-11 Du Page River STREAM 10.07 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Primary Contact Not meeting IL_GB-11 Du Page River STREAM 10.07 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_GB-11 Du Page River STREAM 10.07 Miles MERCURY Fish Consumption Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_GB-11 Du Page River STREAM 10.07 Miles Aquatic Life Medium N threshold Not meeting IL_GB-11 Du Page River STREAM 10.07 Miles CHLORIDE Aquatic Life Low criteria POLYCHLORINATED Not meeting IL_GB-11 Du Page River STREAM 10.07 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_GB-11 Du Page River STREAM 10.07 Miles Aquatic Life Medium BIPHENYLS (PCBS) threshold Not meeting IL_GB-11 Du Page River STREAM 10.07 Miles ARSENIC Aquatic Life Medium threshold Not meeting IL_GB-11 Du Page River STREAM 10.07 Miles METHOXYCHLOR Aquatic Life Medium threshold Not meeting IL_GB-16 Du Page River STREAM 11.31 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_GB-16 Du Page River STREAM 11.31 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 41 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Primary Contact Not meeting IL_GB-16 Du Page River STREAM 11.31 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_GB-16 Du Page River STREAM 11.31 Miles DISSOLVED OXYGEN Aquatic Life Low criteria POLYCHLORINATED Not meeting IL_GB-16 Du Page River STREAM 11.31 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Illinois & Michigan Not meeting IL_GBA STREAM 9.85 Miles MERCURY Fish Consumption Medium Canal threshold Not meeting IL_GBAA-01 Rock Run STREAM 9.64 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_GBE-02 Lily Cache Creek STREAM 10.05 Miles CAUSE UNKNOWN Aquatic Life Medium threshold West Branch Du Not meeting IL_GBK-02 STREAM 9.43 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Page River threshold West Branch Du Not meeting IL_GBK-02 STREAM 9.43 Miles MERCURY Fish Consumption Medium Page River threshold West Branch Du Not meeting IL_GBK-02 STREAM 9.43 Miles ARSENIC Aquatic Life Medium Page River threshold West Branch Du Not meeting IL_GBK-02 STREAM 9.43 Miles METHOXYCHLOR Aquatic Life Medium Page River threshold West Branch Du SEDIMENTATION/SILTATIO Not meeting IL_GBK-02 STREAM 9.43 Miles Aquatic Life Medium Page River N threshold West Branch Du TOTAL SUSPENDED Not meeting IL_GBK-05 STREAM 10.51 Miles Aquatic Life Medium Page River SOLIDS (TSS) threshold West Branch Du SEDIMENTATION/SILTATIO Not meeting IL_GBK-05 STREAM 10.51 Miles Aquatic Life Medium Page River N threshold West Branch Du Not meeting IL_GBK-05 STREAM 10.51 Miles DISSOLVED OXYGEN Aquatic Life Low Page River criteria West Branch Du Not meeting IL_GBK-05 STREAM 10.51 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Page River threshold West Branch Du Primary Contact Not meeting IL_GBK-05 STREAM 10.51 Miles FECAL COLIFORM Low Page River Recreation criteria West Branch Du Not meeting IL_GBK-09 STREAM 11.86 Miles PH Aquatic Life Low Page River criteria West Branch Du SEDIMENTATION/SILTATIO Not meeting IL_GBK-09 STREAM 11.86 Miles Aquatic Life Medium Page River N threshold West Branch Du Primary Contact Not meeting IL_GBK-09 STREAM 11.86 Miles FECAL COLIFORM Low Page River Recreation criteria West Branch Du Not meeting IL_GBK-09 STREAM 11.86 Miles DISSOLVED OXYGEN Aquatic Life Low Page River criteria West Branch Du Not meeting IL_GBK-09 STREAM 11.86 Miles TEMPERATURE Aquatic Life Medium Page River criteria West Branch Du Not meeting IL_GBK-09 STREAM 11.86 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Page River threshold Table 1 Waters and Impairments Approved on Illinois 42 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING West Branch Du Not meeting IL_GBK-14 STREAM 3.82 Miles CHLORIDE Aquatic Life Medium Page River criteria West Branch Du Not meeting IL_GBK-14 STREAM 3.82 Miles DISSOLVED OXYGEN Aquatic Life Low Page River criteria West Branch Du Primary Contact Not meeting IL_GBK-14 STREAM 3.82 Miles FECAL COLIFORM Low Page River Recreation criteria Not meeting IL_GBKA Spring Brook STREAM 1.74 Miles CHLORIDE Aquatic Life Medium criteria Not meeting IL_GBKA Spring Brook STREAM 1.74 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_GBKA Spring Brook STREAM 1.74 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Primary Contact Not meeting IL_GBKA Spring Brook STREAM 1.74 Miles FECAL COLIFORM Low Recreation criteria Primary Contact Not meeting IL_GBKA-01 Spring Brook STREAM 3.18 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_GBKA-01 Spring Brook STREAM 3.18 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_GBKB-01 Kress Creek STREAM 7.91 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_GBKF-01 Winfield Creek STREAM 6.89 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria East Branch Du SEDIMENTATION/SILTATIO Not meeting IL_GBL-02 STREAM 8.01 Miles Aquatic Life Medium Page River N threshold East Branch Du Not meeting IL_GBL-02 STREAM 8.01 Miles METHOXYCHLOR Aquatic Life Medium Page River threshold East Branch Du Not meeting IL_GBL-02 STREAM 8.01 Miles ARSENIC Aquatic Life Medium Page River threshold East Branch Du POLYCHLORINATED Not meeting IL_GBL-02 STREAM 8.01 Miles Fish Consumption Medium Page River BIPHENYLS (PCBS) threshold East Branch Du Not meeting IL_GBL-02 STREAM 8.01 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Page River threshold East Branch Du POLYCHLORINATED Not meeting IL_GBL-05 STREAM 3.18 Miles Fish Consumption Medium Page River BIPHENYLS (PCBS) threshold East Branch Du Not meeting IL_GBL-05 STREAM 3.18 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Page River threshold East Branch Du TOTAL SUSPENDED Not meeting IL_GBL-05 STREAM 3.18 Miles Aquatic Life Medium Page River SOLIDS (TSS) threshold East Branch Du Not meeting IL_GBL-08 STREAM 4.71 Miles ARSENIC Aquatic Life Medium Page River threshold East Branch Du Not meeting IL_GBL-08 STREAM 4.71 Miles DIELDRIN Aquatic Life Medium Page River threshold East Branch Du TOTAL SUSPENDED Not meeting IL_GBL-08 STREAM 4.71 Miles Aquatic Life Medium Page River SOLIDS (TSS) threshold Table 1 Waters and Impairments Approved on Illinois 43 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING East Branch Du SEDIMENTATION/SILTATIO Not meeting IL_GBL-08 STREAM 4.71 Miles Aquatic Life Medium Page River N threshold East Branch Du Not meeting IL_GBL-08 STREAM 4.71 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Page River threshold East Branch Du POLYCHLORINATED Not meeting IL_GBL-08 STREAM 4.71 Miles Fish Consumption Medium Page River BIPHENYLS (PCBS) threshold East Branch Du Not meeting IL_GBL-08 STREAM 4.71 Miles METHOXYCHLOR Aquatic Life Medium Page River threshold East Branch Du Not meeting IL_GBL-08 STREAM 4.71 Miles HEXACHLOROBENZENE Aquatic Life Medium Page River threshold East Branch Du POLYCHLORINATED Not meeting IL_GBL-10 STREAM 4.64 Miles Fish Consumption Medium Page River BIPHENYLS (PCBS) threshold East Branch Du Not meeting IL_GBL-10 STREAM 4.64 Miles HEXACHLOROBENZENE Aquatic Life Medium Page River threshold East Branch Du Not meeting IL_GBL-10 STREAM 4.64 Miles DIELDRIN Aquatic Life Medium Page River threshold East Branch Du Not meeting IL_GBL-10 STREAM 4.64 Miles ARSENIC Aquatic Life Medium Page River threshold East Branch Du Primary Contact Not meeting IL_GBL-10 STREAM 4.64 Miles FECAL COLIFORM Low Page River Recreation criteria East Branch Du Not meeting IL_GBL-10 STREAM 4.64 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Page River threshold East Branch Du Not meeting IL_GBL-10 STREAM 4.64 Miles METHOXYCHLOR Aquatic Life Medium Page River threshold East Branch Du Not meeting IL_GBL-11 STREAM 3.45 Miles PH Aquatic Life Medium Page River criteria East Branch Du POLYCHLORINATED Not meeting IL_GBL-11 STREAM 3.45 Miles Fish Consumption Medium Page River BIPHENYLS (PCBS) threshold East Branch Du Not meeting IL_GBL-11 STREAM 3.45 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Page River threshold East Branch Du Not meeting IL_GBL-11 STREAM 3.45 Miles DISSOLVED OXYGEN Aquatic Life Medium Page River criteria East Branch Du SEDIMENTATION/SILTATIO Not meeting IL_GBL-11 STREAM 3.45 Miles Aquatic Life Medium Page River N threshold Not meeting IL_GBLB-01 St Joseph Creek STREAM 4.29 Miles OIL AND GREASE Aquatic Life Medium criteria TOTAL SUSPENDED Not meeting IL_GBLB-01 St Joseph Creek STREAM 4.29 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_GBLC Lacey Creek STREAM 3.69 Miles BOTTOM DEPOSITS Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_GBLC Lacey Creek STREAM 3.69 Miles Aquatic Life Medium N threshold Not meeting IL_GBLC Lacey Creek STREAM 3.69 Miles CHLORIDE Aquatic Life Medium criteria Table 1 Waters and Impairments Approved on Illinois 44 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_GBLG Armitage Ditch STREAM 1.2 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_GCA-M-A1 Manhattan Creek STREAM 2.53 Miles CHLORIDE Aquatic Life Medium criteria Not meeting IL_GCA-M-A1 Manhattan Creek STREAM 2.53 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_GCA-M-A1 Manhattan Creek STREAM 2.53 Miles Aquatic Life Medium N threshold SEDIMENTATION/SILTATIO Not meeting IL_GCA-M-C1 Manhattan Creek STREAM 4.07 Miles Aquatic Life Medium N threshold Not meeting IL_GCA-M-C1 Manhattan Creek STREAM 4.07 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_GCA-M-C1 Manhattan Creek STREAM 4.07 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_GCB Jackson Branch STREAM 8.83 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_GCB Jackson Branch STREAM 8.83 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_GCB Jackson Branch STREAM 8.83 Miles ZINC Aquatic Life Medium criteria Not meeting IL_GF-01 Sugar Run STREAM 7.32 Miles ARSENIC Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_GF-01 Sugar Run STREAM 7.32 Miles Aquatic Life Medium N threshold Not meeting IL_GF-01 Sugar Run STREAM 7.32 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_GF-01 Sugar Run STREAM 7.32 Miles PH Aquatic Life Medium criteria Not meeting IL_GF-01 Sugar Run STREAM 7.32 Miles MANGANESE Aquatic Life Medium threshold Not meeting IL_GG-04 Hickory Creek STREAM 8.11 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_GG-04 Hickory Creek STREAM 8.11 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_GG-04 Hickory Creek STREAM 8.11 Miles CHLORIDE Aquatic Life Medium criteria Not meeting IL_GG-06 Hickory Creek STREAM 12.63 Miles ARSENIC Aquatic Life Medium threshold Not meeting IL_GG-06 Hickory Creek STREAM 12.63 Miles PH Aquatic Life Medium criteria Not meeting IL_GG-06 Hickory Creek STREAM 12.63 Miles CHLORIDE Aquatic Life Medium criteria Not meeting IL_GG-06 Hickory Creek STREAM 12.63 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Table 1 Waters and Impairments Approved on Illinois 45 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Primary Contact Not meeting IL_GG-22 Hickory Creek STREAM 2.25 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_GG-22 Hickory Creek STREAM 2.25 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold TOTAL SUSPENDED Not meeting IL_GG-22 Hickory Creek STREAM 2.25 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_GG-22 Hickory Creek STREAM 2.25 Miles CHLORIDE Aquatic Life Medium criteria Not meeting IL_GG-22 Hickory Creek STREAM 2.25 Miles PH Aquatic Life Medium criteria Not meeting IL_GG-22 Hickory Creek STREAM 2.25 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_GGA-02 Spring Creek STREAM 15.29 Miles OIL Aesthetic Quality Medium criteria Not meeting IL_GGA-02 Spring Creek STREAM 15.29 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_GGA-02 Spring Creek STREAM 15.29 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_GGA-02 Spring Creek STREAM 15.29 Miles Aquatic Life Medium N threshold Not meeting IL_GGC-FN-A1 Union Ditch STREAM 4.08 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_GGC-FN-A1 Union Ditch STREAM 4.08 Miles Aquatic Life Medium N threshold Not meeting IL_GGC-FN-C1 Union Ditch STREAM 1.23 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_GGC-FN-C1 Union Ditch STREAM 1.23 Miles Aquatic Life Medium N threshold Not meeting IL_GGC-FN-C1 Union Ditch STREAM 1.23 Miles AMMONIA, TOTAL Aquatic Life Medium criteria Not meeting IL_GGC-FN-C1 Union Ditch STREAM 1.23 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_GGC-FN-C1 Union Ditch STREAM 1.23 Miles CHLORIDE Aquatic Life Medium criteria Not meeting IL_GGF Frankfort Trib STREAM 3.92 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_GHC Fiddyment Creek STREAM 5.37 Miles Aquatic Life Medium N threshold Not meeting IL_GHC Fiddyment Creek STREAM 5.37 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Chicago Sanitary Indigenous Aquatic Not meeting IL_GI-02 STREAM 13.53 Miles PHOSPHORUS, TOTAL Medium And Ship Canal Life threshold Chicago Sanitary Indigenous Aquatic Not meeting IL_GI-02 STREAM 13.53 Miles DISSOLVED OXYGEN Medium And Ship Canal Life criteria Table 1 Waters and Impairments Approved on Illinois 46 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Chicago Sanitary POLYCHLORINATED Not meeting IL_GI-02 STREAM 13.53 Miles Fish Consumption Medium And Ship Canal BIPHENYLS (PCBS) threshold Chicago Sanitary Not meeting IL_GI-02 STREAM 13.53 Miles MERCURY Fish Consumption Medium And Ship Canal threshold Chicago Sanitary Indigenous Aquatic Not meeting IL_GI-02 STREAM 13.53 Miles PH Medium And Ship Canal Life threshold Chicago Sanitary Not meeting IL_GI-03 STREAM 6.03 Miles MERCURY Fish Consumption Medium And Ship Canal threshold Chicago Sanitary POLYCHLORINATED Not meeting IL_GI-03 STREAM 6.03 Miles Fish Consumption Medium And Ship Canal BIPHENYLS (PCBS) threshold Chicago Sanitary Indigenous Aquatic Not meeting IL_GI-03 STREAM 6.03 Miles PHOSPHORUS, TOTAL Medium And Ship Canal Life threshold Chicago Sanitary Indigenous Aquatic Not meeting IL_GI-03 STREAM 6.03 Miles DISSOLVED OXYGEN Medium And Ship Canal Life criteria Chicago Sanitary Not meeting IL_GI-06 STREAM 12.33 Miles MERCURY Fish Consumption Medium And Ship Canal threshold Chicago Sanitary POLYCHLORINATED Not meeting IL_GI-06 STREAM 12.33 Miles Fish Consumption Medium And Ship Canal BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_GJ-01 Sawmill Creek STREAM 6.62 Miles Aquatic Life Medium BIPHENYLS (PCBS) threshold Not meeting IL_GJ-01 Sawmill Creek STREAM 6.62 Miles METHOXYCHLOR Aquatic Life Medium threshold Not meeting IL_GK-03 Flag Creek STREAM 7.91 Miles ARSENIC Aquatic Life Medium threshold Not meeting IL_GK-03 Flag Creek STREAM 7.91 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_GK-03 Flag Creek STREAM 7.91 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold DDT Not meeting IL_GK-03 Flag Creek STREAM 7.91 Miles (DICHLORODIPHENYLTRIC Aquatic Life Medium threshold HLOROETHANE) Not meeting IL_GK-03 Flag Creek STREAM 7.91 Miles METHOXYCHLOR Aquatic Life Medium threshold Not meeting IL_GL Salt Creek STREAM 11.34 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_GL Salt Creek STREAM 11.34 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_GL Salt Creek STREAM 11.34 Miles CHLORIDE Aquatic Life Medium criteria Not meeting IL_GL Salt Creek STREAM 11.34 Miles PHOSPHORUS, TOTAL Aquatic Life Medium criteria Not meeting IL_GL Salt Creek STREAM 11.34 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 47 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Primary Contact Not meeting IL_GL Salt Creek STREAM 11.34 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_GL-03 Salt Creek STREAM 10.52 Miles HEPTACHLOR Aquatic Life Medium threshold TOTAL SUSPENDED Not meeting IL_GL-03 Salt Creek STREAM 10.52 Miles Aquatic Life Medium SOLIDS (TSS) threshold SEDIMENTATION/SILTATIO Not meeting IL_GL-03 Salt Creek STREAM 10.52 Miles Aquatic Life Medium N threshold POLYCHLORINATED Not meeting IL_GL-03 Salt Creek STREAM 10.52 Miles Aquatic Life Medium BIPHENYLS (PCBS) threshold Not meeting IL_GL-03 Salt Creek STREAM 10.52 Miles MERCURY Fish Consumption Medium threshold DDT Not meeting IL_GL-03 Salt Creek STREAM 10.52 Miles (DICHLORODIPHENYLTRIC Aquatic Life Medium threshold HLOROETHANE) Not meeting IL_GL-03 Salt Creek STREAM 10.52 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold POLYCHLORINATED Not meeting IL_GL-03 Salt Creek STREAM 10.52 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_GL-09 Salt Creek STREAM 12.21 Miles METHOXYCHLOR Aquatic Life Medium threshold Primary Contact Not meeting IL_GL-09 Salt Creek STREAM 12.21 Miles FECAL COLIFORM Low Recreation criteria POLYCHLORINATED Not meeting IL_GL-09 Salt Creek STREAM 12.21 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold TOTAL SUSPENDED Not meeting IL_GL-09 Salt Creek STREAM 12.21 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_GL-09 Salt Creek STREAM 12.21 Miles ALDRIN Aquatic Life Medium threshold Not meeting IL_GL-09 Salt Creek STREAM 12.21 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_GL-09 Salt Creek STREAM 12.21 Miles MERCURY Fish Consumption Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_GL-09 Salt Creek STREAM 12.21 Miles Aquatic Life Medium N threshold Not meeting IL_GL-10 Salt Creek STREAM 3.71 Miles NICKEL Aquatic Life Medium criteria Primary Contact Not meeting IL_GL-10 Salt Creek STREAM 3.71 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_GL-10 Salt Creek STREAM 3.71 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold Not meeting IL_GL-10 Salt Creek STREAM 3.71 Miles ARSENIC Aquatic Life Medium threshold Table 1 Waters and Impairments Approved on Illinois 48 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING POLYCHLORINATED Not meeting IL_GL-10 Salt Creek STREAM 3.71 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_GL-10 Salt Creek STREAM 3.71 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_GL-10 Salt Creek STREAM 3.71 Miles PH Aquatic Life Low criteria Not meeting IL_GL-10 Salt Creek STREAM 3.71 Miles METHOXYCHLOR Aquatic Life Medium threshold Not meeting IL_GL-10 Salt Creek STREAM 3.71 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_GL-19 Salt Creek STREAM 3.15 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold POLYCHLORINATED Not meeting IL_GL-19 Salt Creek STREAM 3.15 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_GL-19 Salt Creek STREAM 3.15 Miles CHLORIDE Aquatic Life Medium criteria Primary Contact Not meeting IL_GL-19 Salt Creek STREAM 3.15 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_GL-19 Salt Creek STREAM 3.15 Miles MERCURY Fish Consumption Medium threshold TOTAL SUSPENDED Not meeting IL_GL-19 Salt Creek STREAM 3.15 Miles Aquatic Life Medium SOLIDS (TSS) threshold DDT Not meeting IL_GLA-02 Addison Creek STREAM 6.71 Miles (DICHLORODIPHENYLTRIC Aquatic Life Medium threshold HLOROETHANE) DEBRIS/FLOATABLES/TRA Not meeting IL_GLA-02 Addison Creek STREAM 6.71 Miles Aesthetic Quality Medium SH criteria Not meeting IL_GLA-02 Addison Creek STREAM 6.71 Miles NICKEL Aquatic Life Medium threshold Not meeting IL_GLA-02 Addison Creek STREAM 6.71 Miles ALDRIN Aquatic Life Medium threshold Not meeting IL_GLA-02 Addison Creek STREAM 6.71 Miles CHROMIUM, TOTAL Aquatic Life Medium threshold Not meeting IL_GLA-02 Addison Creek STREAM 6.71 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Primary Contact Not meeting IL_GLA-02 Addison Creek STREAM 6.71 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_GLA-02 Addison Creek STREAM 6.71 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold Not meeting IL_GLA-04 Addison Creek STREAM 3.44 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold Not meeting IL_GLA-04 Addison Creek STREAM 3.44 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Table 1 Waters and Impairments Approved on Illinois 49 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_GLA-04 Addison Creek STREAM 3.44 Miles COPPER Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_GLA-04 Addison Creek STREAM 3.44 Miles Aquatic Life Medium N threshold Not meeting IL_GLA-04 Addison Creek STREAM 3.44 Miles BOTTOM DEPOSITS Aesthetic Quality Medium criteria Not meeting IL_GLA-04 Addison Creek STREAM 3.44 Miles OIL Aesthetic Quality Medium criteria Not meeting IL_GLA-04 Addison Creek STREAM 3.44 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium criteria TOTAL SUSPENDED Not meeting IL_GLA-04 Addison Creek STREAM 3.44 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_GLA-04 Addison Creek STREAM 3.44 Miles ALPHA-BHC Aquatic Life Medium threshold POLYCHLORINATED Not meeting IL_GLA-04 Addison Creek STREAM 3.44 Miles Aquatic Life Medium BIPHENYLS (PCBS) threshold Not meeting IL_GLB-01 Spring Brook STREAM 3.14 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_GLB-01 Spring Brook STREAM 3.14 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold TOTAL SUSPENDED Not meeting IL_GLB-01 Spring Brook STREAM 3.14 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_GLB-01 Spring Brook STREAM 3.14 Miles ENDRIN Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_GLB-01 Spring Brook STREAM 3.14 Miles Aquatic Life Medium N threshold DDT Not meeting IL_GLB-01 Spring Brook STREAM 3.14 Miles (DICHLORODIPHENYLTRIC Aquatic Life Medium threshold HLOROETHANE) Not meeting IL_GLB-07 Spring Brook STREAM 4.19 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_GM-01 Silver Creek STREAM 4.57 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria DEBRIS/FLOATABLES/TRA Not meeting IL_GM-01 Silver Creek STREAM 4.57 Miles Aesthetic Quality Medium SH criteria Not meeting IL_GM-01 Silver Creek STREAM 4.57 Miles OIL Aesthetic Quality Medium criteria Not meeting IL_GO-01 Willow Creek STREAM 8.22 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_GOA-01 Higgins Creek STREAM 1.69 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_GOA-02 Higgins Creek STREAM 2.57 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Table 1 Waters and Impairments Approved on Illinois 50 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING TOTAL SUSPENDED Not meeting IL_GST Buffalo Creek STREAM 10.69 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_GU-02 Indian Creek STREAM 11.32 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_GW-02 Mill Creek STREAM 12.97 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_GW-02 Mill Creek STREAM 12.97 Miles PH Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_GWA North Mill Creek STREAM 5.48 Miles Aquatic Life Medium N threshold Not meeting IL_GWA North Mill Creek STREAM 5.48 Miles ARSENIC Aquatic Life Medium threshold Not meeting IL_GWA North Mill Creek STREAM 5.48 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_GWA North Mill Creek STREAM 5.48 Miles MANGANESE Aquatic Life Medium threshold Not meeting IL_GWAA Hastings Creek STREAM 4.04 Miles ARSENIC Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_GWAA Hastings Creek STREAM 4.04 Miles Aquatic Life Medium N threshold Not meeting IL_GWAA Hastings Creek STREAM 4.04 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_GWAB Dutch Gap Canal STREAM 1.1 Miles MANGANESE Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_GWAB Dutch Gap Canal STREAM 1.1 Miles Aquatic Life Medium N threshold Not meeting IL_GWAB Dutch Gap Canal STREAM 1.1 Miles ARSENIC Aquatic Life Medium threshold Not meeting IL_GWAB Dutch Gap Canal STREAM 1.1 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Calumet Sag Indigenous Aquatic Not meeting IL_H-01 STREAM 5.74 Miles PHOSPHORUS, TOTAL Medium Channel Life threshold Calumet Sag TOTAL SUSPENDED Indigenous Aquatic Not meeting IL_H-01 STREAM 5.74 Miles Medium Channel SOLIDS (TSS) Life threshold Calumet Sag Indigenous Aquatic Not meeting IL_H-01 STREAM 5.74 Miles PH Medium Channel Life criteria Calumet Sag POLYCHLORINATED Not meeting IL_H-01 STREAM 5.74 Miles Fish Consumption Medium Channel BIPHENYLS (PCBS) threshold Calumet Sag Indigenous Aquatic Not meeting IL_H-01 STREAM 5.74 Miles DISSOLVED OXYGEN Medium Channel Life criteria Calumet Sag Not meeting IL_H-01 STREAM 5.74 Miles MERCURY Fish Consumption Medium Channel threshold Calumet Sag Indigenous Aquatic Not meeting IL_H-02 STREAM 10.35 Miles DISSOLVED OXYGEN Medium Channel Life criteria Table 1 Waters and Impairments Approved on Illinois 51 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Calumet Sag Not meeting IL_H-02 STREAM 10.35 Miles MERCURY Fish Consumption Medium Channel threshold Calumet Sag POLYCHLORINATED Not meeting IL_H-02 STREAM 10.35 Miles Fish Consumption Medium Channel BIPHENYLS (PCBS) threshold Little Calumet River POLYCHLORINATED Not meeting IL_HA-04 STREAM 1.78 Miles Fish Consumption Medium North BIPHENYLS (PCBS) threshold Little Calumet River Not meeting IL_HA-04 STREAM 1.78 Miles MERCURY Fish Consumption Medium North threshold Little Calumet River Not meeting IL_HA-05 STREAM 5.02 Miles MERCURY Fish Consumption Medium North threshold Little Calumet River POLYCHLORINATED Not meeting IL_HA-05 STREAM 5.02 Miles Fish Consumption Medium North BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_HAA-01 Calumet River STREAM 7 Miles FECAL COLIFORM Medium Recreation criteria POLYCHLORINATED Not meeting IL_HAA-01 Calumet River STREAM 7 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_HAA-01 Calumet River STREAM 7 Miles MERCURY Fish Consumption Medium threshold Grand Calumet Indigenous Aquatic Not meeting IL_HAB-41 STREAM 6.22 Miles PHOSPHORUS, TOTAL Medium River Life threshold Grand Calumet Indigenous Aquatic Not meeting IL_HAB-41 STREAM 6.22 Miles CADMIUM Medium River Life threshold Grand Calumet Indigenous Aquatic Not meeting IL_HAB-41 STREAM 6.22 Miles COPPER Medium River Life threshold Grand Calumet SEDIMENTATION/SILTATIO Indigenous Aquatic Not meeting IL_HAB-41 STREAM 6.22 Miles Medium River N Life threshold Grand Calumet Indigenous Aquatic Not meeting IL_HAB-41 STREAM 6.22 Miles LEAD Medium River Life threshold Grand Calumet Indigenous Aquatic Not meeting IL_HAB-41 STREAM 6.22 Miles NICKEL Medium River Life threshold Grand Calumet Indigenous Aquatic Not meeting IL_HAB-41 STREAM 6.22 Miles ARSENIC Medium River Life threshold DDT Grand Calumet Indigenous Aquatic Not meeting IL_HAB-41 STREAM 6.22 Miles (DICHLORODIPHENYLTRIC Medium River Life threshold HLOROETHANE) Grand Calumet Indigenous Aquatic Not meeting IL_HAB-41 STREAM 6.22 Miles AMMONIA, UN-IONIZED Medium River Life criteria Grand Calumet Indigenous Aquatic Not meeting IL_HAB-41 STREAM 6.22 Miles IRON Medium River Life criteria Grand Calumet Indigenous Aquatic Not meeting IL_HAB-41 STREAM 6.22 Miles BARIUM Medium River Life threshold Grand Calumet POLYCHLORINATED Indigenous Aquatic Not meeting IL_HAB-41 STREAM 6.22 Miles Medium River BIPHENYLS (PCBS) Life threshold Table 1 Waters and Impairments Approved on Illinois 52 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Grand Calumet Indigenous Aquatic Not meeting IL_HAB-41 STREAM 6.22 Miles ZINC Medium River Life threshold Grand Calumet Indigenous Aquatic Not meeting IL_HAB-41 STREAM 6.22 Miles CHROMIUM, TOTAL Medium River Life threshold Grand Calumet Indigenous Aquatic Not meeting IL_HAB-41 STREAM 6.22 Miles SILVER Medium River Life threshold Grand Calumet Indigenous Aquatic Not meeting IL_HAB-41 STREAM 6.22 Miles DISSOLVED OXYGEN Medium River Life criteria Grand Calumet Indigenous Aquatic Not meeting IL_HAB-41 STREAM 6.22 Miles PH Medium River Life threshold Little Calumet River Not meeting IL_HB-01 STREAM 8.68 Miles CHLORDANE Aquatic Life Medium South threshold Little Calumet River Not meeting IL_HB-01 STREAM 8.68 Miles DISSOLVED OXYGEN Aquatic Life Medium South criteria Little Calumet River Not meeting IL_HB-01 STREAM 8.68 Miles HEXACHLOROBENZENE Aquatic Life Medium South threshold Little Calumet River Primary Contact Not meeting IL_HB-01 STREAM 8.68 Miles FECAL COLIFORM Medium South Recreation criteria Little Calumet River Not meeting IL_HB-01 STREAM 8.68 Miles CHLORIDE Aquatic Life Medium South criteria Little Calumet River Not meeting IL_HB-01 STREAM 8.68 Miles ENDRIN Aquatic Life Medium South threshold Little Calumet River Not meeting IL_HB-01 STREAM 8.68 Miles PHOSPHORUS, TOTAL Aquatic Life Medium South threshold Little Calumet River SEDIMENTATION/SILTATIO Not meeting IL_HB-01 STREAM 8.68 Miles Aquatic Life Medium South N threshold Little Calumet River SEDIMENTATION/SILTATIO Not meeting IL_HB-42 STREAM 4.3 Miles Aquatic Life Medium South N threshold Little Calumet River Not meeting IL_HB-42 STREAM 4.3 Miles SLUDGE Aesthetic Quality Medium South criteria Little Calumet River Not meeting IL_HB-42 STREAM 4.3 Miles DISSOLVED OXYGEN Aquatic Life Medium South criteria Little Calumet River Not meeting IL_HB-42 STREAM 4.3 Miles OIL Aesthetic Quality Medium South criteria Little Calumet River Primary Contact Not meeting IL_HB-42 STREAM 4.3 Miles FECAL COLIFORM Medium South Recreation criteria Little Calumet River Not meeting IL_HB-42 STREAM 4.3 Miles PHOSPHORUS, TOTAL Aquatic Life Medium South threshold Little Calumet River Not meeting IL_HB-42 STREAM 4.3 Miles BOTTOM DEPOSITS Aesthetic Quality Medium South criteria Not meeting IL_HBD-02 Thorn Creek STREAM 3.84 Miles ZINC Aquatic Life Low criteria TOTAL SUSPENDED Not meeting IL_HBD-02 Thorn Creek STREAM 3.84 Miles Aquatic Life Medium SOLIDS (TSS) threshold Table 1 Waters and Impairments Approved on Illinois 53 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_HBD-02 Thorn Creek STREAM 3.84 Miles DIELDRIN Aquatic Life Medium threshold Not meeting IL_HBD-02 Thorn Creek STREAM 3.84 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_HBD-02 Thorn Creek STREAM 3.84 Miles ALDRIN Aquatic Life Medium threshold Primary Contact Not meeting IL_HBD-02 Thorn Creek STREAM 3.84 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_HBD-02 Thorn Creek STREAM 3.84 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold Not meeting IL_HBD-02 Thorn Creek STREAM 3.84 Miles ENDRIN Aquatic Life Medium threshold Not meeting IL_HBD-02 Thorn Creek STREAM 3.84 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold POLYCHLORINATED Not meeting IL_HBD-02 Thorn Creek STREAM 3.84 Miles Aquatic Life Medium BIPHENYLS (PCBS) threshold Not meeting IL_HBD-02 Thorn Creek STREAM 3.84 Miles SILVER Aquatic Life Low criteria DDT Not meeting IL_HBD-02 Thorn Creek STREAM 3.84 Miles (DICHLORODIPHENYLTRIC Aquatic Life Medium threshold HLOROETHANE) Not meeting IL_HBD-02 Thorn Creek STREAM 3.84 Miles CHLORDANE Aquatic Life Medium threshold Not meeting IL_HBD-03 Thorn Creek STREAM 6.52 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Primary Contact Not meeting IL_HBD-03 Thorn Creek STREAM 6.52 Miles FECAL COLIFORM Low Recreation criteria POLYCHLORINATED Not meeting IL_HBD-04 Thorn Creek STREAM 4.32 Miles Aquatic Life Medium BIPHENYLS (PCBS) threshold Not meeting IL_HBD-04 Thorn Creek STREAM 4.32 Miles DIELDRIN Aquatic Life Medium threshold DDT Not meeting IL_HBD-04 Thorn Creek STREAM 4.32 Miles (DICHLORODIPHENYLTRIC Aquatic Life Medium threshold HLOROETHANE) Not meeting IL_HBD-04 Thorn Creek STREAM 4.32 Miles ENDRIN Aquatic Life Medium threshold Not meeting IL_HBD-04 Thorn Creek STREAM 4.32 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold Not meeting IL_HBD-04 Thorn Creek STREAM 4.32 Miles CHLORIDE Aquatic Life Low criteria Not meeting IL_HBD-04 Thorn Creek STREAM 4.32 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_HBD-04 Thorn Creek STREAM 4.32 Miles ALDRIN Aquatic Life Medium threshold Table 1 Waters and Impairments Approved on Illinois 54 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Primary Contact Not meeting IL_HBD-04 Thorn Creek STREAM 4.32 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_HBD-04 Thorn Creek STREAM 4.32 Miles CHLORDANE Aquatic Life Medium threshold Not meeting IL_HBD-04 Thorn Creek STREAM 4.32 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_HBD-05 Thorn Creek STREAM 2.92 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Primary Contact Not meeting IL_HBD-05 Thorn Creek STREAM 2.92 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_HBD-05 Thorn Creek STREAM 2.92 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold Not meeting IL_HBD-06 Thorn Creek STREAM 2.21 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_HBD-06 Thorn Creek STREAM 2.21 Miles DIELDRIN Aquatic Life Medium threshold Not meeting IL_HBD-06 Thorn Creek STREAM 2.21 Miles ALDRIN Aquatic Life Medium threshold Not meeting IL_HBD-06 Thorn Creek STREAM 2.21 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_HBD-06 Thorn Creek STREAM 2.21 Miles CHLORIDE Aquatic Life Medium criteria Primary Contact Not meeting IL_HBD-06 Thorn Creek STREAM 2.21 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_HBD-06 Thorn Creek STREAM 2.21 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_HBDA-01 North Creek STREAM 10.24 Miles Aquatic Life Medium N threshold Not meeting IL_HBDA-01 North Creek STREAM 10.24 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_HBDA-01 North Creek STREAM 10.24 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold Primary Contact Not meeting IL_HBDB-03 Butterfield Creek STREAM 15.24 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_HBDB-03 Butterfield Creek STREAM 15.24 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold Not meeting IL_HBDC Deer Creek STREAM 8.2 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Primary Contact Not meeting IL_HBDC Deer Creek STREAM 8.2 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_HBDC-02 Deer Creek STREAM 10.12 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Primary Contact Not meeting IL_HBDC-02 Deer Creek STREAM 10.12 Miles FECAL COLIFORM Low Recreation criteria Table 1 Waters and Impairments Approved on Illinois 55 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING SEDIMENTATION/SILTATIO Not meeting IL_HBDC-02 Deer Creek STREAM 10.12 Miles Aquatic Life Medium N threshold Not meeting IL_HBDC-02 Deer Creek STREAM 10.12 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold South Branch Not meeting IL_HC-01 STREAM 3.95 Miles MERCURY Fish Consumption Medium Chicago River threshold South Branch POLYCHLORINATED Not meeting IL_HC-01 STREAM 3.95 Miles Fish Consumption Medium Chicago River BIPHENYLS (PCBS) threshold South Fork South Indigenous Aquatic Not meeting IL_HCA-01 Branch Chicago STREAM 1.49 Miles PHOSPHORUS, TOTAL Medium Life threshold River South Fork South Indigenous Aquatic Not meeting IL_HCA-01 Branch Chicago STREAM 1.49 Miles DISSOLVED OXYGEN Medium Life criteria River Not meeting IL_HCB-01 Chicago River STREAM 1.29 Miles PH Aquatic Life Medium criteria Not meeting IL_HCB-01 Chicago River STREAM 1.29 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_HCB-01 Chicago River STREAM 1.29 Miles FECAL COLIFORM Medium Recreation criteria POLYCHLORINATED Not meeting IL_HCB-01 Chicago River STREAM 1.29 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_HCB-01 Chicago River STREAM 1.29 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold North Branch Indigenous Aquatic Not meeting IL_HCC-02 STREAM 2.03 Miles DISSOLVED OXYGEN Medium Chicago River Life criteria North Branch TOTAL DISSOLVED Indigenous Aquatic Not meeting IL_HCC-02 STREAM 2.03 Miles Medium Chicago River SOLIDS (TDS) Life criteria North Branch Not meeting IL_HCC-02 STREAM 2.03 Miles MERCURY Fish Consumption Medium Chicago River threshold North Branch POLYCHLORINATED Not meeting IL_HCC-02 STREAM 2.03 Miles Fish Consumption Medium Chicago River BIPHENYLS (PCBS) threshold North Branch POLYCHLORINATED Not meeting IL_HCC-07 STREAM 11.9 Miles Fish Consumption Medium Chicago River BIPHENYLS (PCBS) threshold North Branch Not meeting IL_HCC-07 STREAM 11.9 Miles DISSOLVED OXYGEN Aquatic Life Low Chicago River criteria North Branch Not meeting IL_HCC-07 STREAM 11.9 Miles MERCURY Fish Consumption Medium Chicago River threshold North Branch TOTAL SUSPENDED Not meeting IL_HCC-07 STREAM 11.9 Miles Aquatic Life Medium Chicago River SOLIDS (TSS) threshold North Branch Not meeting IL_HCC-07 STREAM 11.9 Miles CHLORIDE Aquatic Life Low Chicago River criteria North Branch Primary Contact Not meeting IL_HCC-07 STREAM 11.9 Miles FECAL COLIFORM Low Chicago River Recreation criteria Table 1 Waters and Impairments Approved on Illinois 56 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING North Branch Not meeting IL_HCC-07 STREAM 11.9 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Chicago River threshold North Branch Not meeting IL_HCC-07 STREAM 11.9 Miles HEXACHLOROBENZENE Aquatic Life Medium Chicago River threshold DDT North Branch Not meeting IL_HCC-07 STREAM 11.9 Miles (DICHLORODIPHENYLTRIC Aquatic Life Medium Chicago River threshold HLOROETHANE) North Branch Not meeting IL_HCC-07 STREAM 11.9 Miles ALDRIN Aquatic Life Medium Chicago River threshold North Branch Indigenous Aquatic Not meeting IL_HCC-08 STREAM 5.75 Miles PHOSPHORUS, TOTAL Medium Chicago River Life threshold North Branch POLYCHLORINATED Not meeting IL_HCC-08 STREAM 5.75 Miles Fish Consumption Medium Chicago River BIPHENYLS (PCBS) threshold North Branch TOTAL DISSOLVED Indigenous Aquatic Not meeting IL_HCC-08 STREAM 5.75 Miles Medium Chicago River SOLIDS (TDS) Life criteria North Branch Indigenous Aquatic Not meeting IL_HCC-08 STREAM 5.75 Miles IRON Medium Chicago River Life criteria North Branch Not meeting IL_HCC-08 STREAM 5.75 Miles MERCURY Fish Consumption Medium Chicago River threshold North Branch Indigenous Aquatic Not meeting IL_HCC-08 STREAM 5.75 Miles DISSOLVED OXYGEN Medium Chicago River Life criteria North Shore POLYCHLORINATED Not meeting IL_HCCA-02 STREAM 4.41 Miles Fish Consumption Medium Channel BIPHENYLS (PCBS) threshold North Shore Not meeting IL_HCCA-02 STREAM 4.41 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Channel threshold North Shore Not meeting IL_HCCA-02 STREAM 4.41 Miles DISSOLVED OXYGEN Aquatic Life Medium Channel criteria North Shore Not meeting IL_HCCA-02 STREAM 4.41 Miles PH Aquatic Life Medium Channel criteria North Shore Primary Contact Not meeting IL_HCCA-02 STREAM 4.41 Miles FECAL COLIFORM Medium Channel Recreation criteria North Shore Not meeting IL_HCCA-02 STREAM 4.41 Miles MERCURY Fish Consumption Medium Channel threshold North Shore Not meeting IL_HCCA-04 STREAM 3.32 Miles MERCURY Fish Consumption Medium Channel threshold North Shore POLYCHLORINATED Not meeting IL_HCCA-04 STREAM 3.32 Miles Fish Consumption Medium Channel BIPHENYLS (PCBS) threshold West Fork North Not meeting IL_HCCB-05 Branch Chicago STREAM 14.48 Miles CHLORIDE Aquatic Life Low criteria River West Fork North Not meeting IL_HCCB-05 Branch Chicago STREAM 14.48 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold River Table 1 Waters and Impairments Approved on Illinois 57 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING West Fork North Primary Contact Not meeting IL_HCCB-05 Branch Chicago STREAM 14.48 Miles FECAL COLIFORM Low Recreation criteria River West Fork North DDT Not meeting IL_HCCB-05 Branch Chicago STREAM 14.48 Miles (DICHLORODIPHENYLTRIC Aquatic Life Medium threshold River HLOROETHANE) West Fork North Not meeting IL_HCCB-05 Branch Chicago STREAM 14.48 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold River West Fork North Not meeting IL_HCCB-05 Branch Chicago STREAM 14.48 Miles ALDRIN Aquatic Life Medium threshold River West Fork North Not meeting IL_HCCB-05 Branch Chicago STREAM 14.48 Miles ENDRIN Aquatic Life Medium threshold River West Fork North TOTAL SUSPENDED Not meeting IL_HCCB-05 Branch Chicago STREAM 14.48 Miles Aquatic Life Medium SOLIDS (TSS) threshold River West Fork North Not meeting IL_HCCB-05 Branch Chicago STREAM 14.48 Miles DISSOLVED OXYGEN Aquatic Life Low criteria River Middle Fork North Not meeting IL_HCCC-02 Branch Chicago STREAM 18.57 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium criteria River Middle Fork North Not meeting IL_HCCC-02 Branch Chicago STREAM 18.57 Miles BOTTOM DEPOSITS Aesthetic Quality Medium criteria River Middle Fork North Not meeting IL_HCCC-02 Branch Chicago STREAM 18.57 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold River Middle Fork North SEDIMENTATION/SILTATIO Not meeting IL_HCCC-02 Branch Chicago STREAM 18.57 Miles Aquatic Life Medium N threshold River Middle Fork North Not meeting IL_HCCC-02 Branch Chicago STREAM 18.57 Miles DISSOLVED OXYGEN Aquatic Life Low criteria River Middle Fork North Primary Contact Not meeting IL_HCCC-02 Branch Chicago STREAM 18.57 Miles FECAL COLIFORM Low Recreation criteria River Middle Fork North TOTAL SUSPENDED Not meeting IL_HCCC-02 Branch Chicago STREAM 18.57 Miles Aquatic Life Medium SOLIDS (TSS) threshold River Table 1 Waters and Impairments Approved on Illinois 58 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Middle Fork North DDT Not meeting IL_HCCC-02 Branch Chicago STREAM 18.57 Miles (DICHLORODIPHENYLTRIC Aquatic Life Medium threshold River HLOROETHANE) Middle Fork North Not meeting IL_HCCC-02 Branch Chicago STREAM 18.57 Miles CHLORIDE Aquatic Life Low criteria River Middle Fork North Primary Contact Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles FECAL COLIFORM Low Recreation criteria River Middle Fork North TOTAL SUSPENDED Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles Aquatic Life Medium SOLIDS (TSS) threshold River Middle Fork North DDT Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles (DICHLORODIPHENYLTRIC Aquatic Life Medium threshold River HLOROETHANE) Middle Fork North Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles TEMPERATURE Aquatic Life Low criteria River Middle Fork North Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold River Middle Fork North Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles ENDRIN Aquatic Life Medium threshold River Middle Fork North Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles NICKEL Aquatic Life Medium threshold River Middle Fork North Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles SILVER Aquatic Life Medium threshold River Middle Fork North Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles CHLORIDE Aquatic Life Low criteria River Middle Fork North SEDIMENTATION/SILTATIO Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles Aquatic Life Medium N threshold River Middle Fork North Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold River Middle Fork North Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles DISSOLVED OXYGEN Aquatic Life Low criteria River Table 1 Waters and Impairments Approved on Illinois 59 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Middle Fork North Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles CADMIUM Aquatic Life Medium threshold River Middle Fork North Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles MERCURY Aquatic Life Medium threshold River Middle Fork North Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles LEAD Aquatic Life Medium threshold River Middle Fork North Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles MERCURY Fish Consumption Medium threshold River Middle Fork North Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles BARIUM Aquatic Life Medium threshold River Middle Fork North POLYCHLORINATED Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold River Middle Fork North Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles CHROMIUM, TOTAL Aquatic Life Medium threshold River Middle Fork North Not meeting IL_HCCC-04 Branch Chicago STREAM 3.51 Miles COPPER Aquatic Life Medium threshold River Not meeting IL_HCCD-01 Skokie River STREAM 13.47 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_HCCD-01 Skokie River STREAM 13.47 Miles CHLORIDE Aquatic Life Medium criteria Not meeting IL_HCCD-01 Skokie River STREAM 13.47 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold TOTAL SUSPENDED Not meeting IL_HCCD-01 Skokie River STREAM 13.47 Miles Aquatic Life Medium SOLIDS (TSS) threshold Primary Contact Not meeting IL_HCCD-01 Skokie River STREAM 13.47 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_HCCD-09 Skokie River STREAM 1.76 Miles CHLORDANE Aquatic Life Medium threshold Not meeting IL_HCCD-09 Skokie River STREAM 1.76 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_HCCD-09 Skokie River STREAM 1.76 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_HCCD-09 Skokie River STREAM 1.76 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_HCCD-09 Skokie River STREAM 1.76 Miles Aquatic Life Medium N threshold Table 1 Waters and Impairments Approved on Illinois 60 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_HCCD-09 Skokie River STREAM 1.76 Miles BOTTOM DEPOSITS Aesthetic Quality Medium criteria Not meeting IL_HCCD-09 Skokie River STREAM 1.76 Miles CHLORIDE Aquatic Life Medium criteria Primary Contact Not meeting IL_HCCD-09 Skokie River STREAM 1.76 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_HF-01 Tinley Creek STREAM 9.49 Miles CAUSE UNKNOWN Aquatic Life Medium threshold POLYCHLORINATED Not meeting IL_I-84 Mississippi River STREAM 119.5 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_I-84 Mississippi River STREAM 119.5 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_I-84 Mississippi River STREAM 119.5 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_IA-01 Orchard Creek STREAM 3.79 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_IB-01 Sexton Creek STREAM 3.09 Miles PH Aquatic Life Medium threshold Not meeting IL_IB-07 Sexton Creek STREAM 9.06 Miles PH Aquatic Life Medium criteria Not meeting IL_IB-07 Sexton Creek STREAM 9.06 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_IBC Main Ditch STREAM 3.5 Miles MANGANESE Aquatic Life Medium criteria Not meeting IL_IBC Main Ditch STREAM 3.5 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_IBC Main Ditch STREAM 3.5 Miles MERCURY Fish Consumption Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_IBC Main Ditch STREAM 3.5 Miles Aquatic Life Medium N threshold Not meeting IL_IC-05 Clear Creek STREAM 12.27 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_IC-05 Clear Creek STREAM 12.27 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_ICI Line C Ditch STREAM 3.67 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ICI Line C Ditch STREAM 3.67 Miles MANGANESE Aquatic Life Medium criteria Running Lake Not meeting IL_ICIA-01 STREAM 15.95 Miles DISSOLVED OXYGEN Aquatic Life Medium Ditch criteria Not meeting IL_II-02 Marys River STREAM 12.92 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_II-02 Marys River STREAM 12.92 Miles BOTTOM DEPOSITS Aesthetic Quality Medium threshold Table 1 Waters and Impairments Approved on Illinois 61 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_II-02 Marys River STREAM 12.92 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_II-02 Marys River STREAM 12.92 Miles SLUDGE Aesthetic Quality Medium threshold Not meeting IL_II-03 Marys River STREAM 13.14 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_II-03 Marys River STREAM 13.14 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_II-05 Marys River STREAM 10.31 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_II-91 Marys River STREAM 8.12 Miles MERCURY Fish Consumption Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_IIH-36 Cox Creek STREAM 12.08 Miles Aquatic Life Medium N threshold TOTAL SUSPENDED Not meeting IL_IIH-36 Cox Creek STREAM 12.08 Miles Aquatic Life Medium SOLIDS (TSS) threshold North Fork Cox SEDIMENTATION/SILTATIO Not meeting IL_IIHA-31 STREAM 5.11 Miles Aquatic Life Medium Creek N threshold North Fork Cox Not meeting IL_IIHA-31 STREAM 5.11 Miles ENDRIN Aquatic Life Medium Creek threshold North Fork Cox SEDIMENTATION/SILTATIO Not meeting IL_IIHA-ST-C1 STREAM 0.55 Miles Aquatic Life Medium Creek N threshold Not meeting IL_IIH-ST-C2 Cox Creek STREAM 3.76 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_IIH-ST-C2 Cox Creek STREAM 3.76 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_IIH-ST-C2 Cox Creek STREAM 3.76 Miles Aquatic Life Medium N threshold Not meeting IL_IIK-27 Maxwell Creek STREAM 2.91 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_IIK-27 Maxwell Creek STREAM 2.91 Miles DISSOLVED OXYGEN Aquatic Life Medium threshold Not meeting IL_IIK-SP-C1A Maxwell Creek STREAM 2.45 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_IX-03 Cache River STREAM 3.97 Miles DISSOLVED OXYGEN Aquatic Life Medium threshold Not meeting IL_IX-03 Cache River STREAM 3.97 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_IX-04 Cache River STREAM 7.32 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_IX-05 Cache River STREAM 7.77 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_IX-05 Cache River STREAM 7.77 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 62 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_IX-06 Cache River STREAM 10.4 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_IX-06 Cache River STREAM 10.4 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_IX-08 Cache River STREAM 2.85 Miles ZINC Aquatic Life Medium threshold Not meeting IL_IX-08 Cache River STREAM 2.85 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_IXC Boar Creek STREAM 7.69 Miles BOTTOM DEPOSITS Aesthetic Quality Medium criteria Not meeting IL_IXC Boar Creek STREAM 7.69 Miles TURBIDITY Aesthetic Quality Medium criteria Not meeting IL_IXC Boar Creek STREAM 7.69 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_IXCC-01 Pulaski Slough STREAM 9.64 Miles DISSOLVED OXYGEN Aquatic Life Medium threshold Not meeting IL_IXD-01 Sandy Creek STREAM 13.42 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_IXD-01 Sandy Creek STREAM 13.42 Miles PH Aquatic Life Medium criteria Not meeting IL_IXDA Wolf Creek STREAM 4.67 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria West Branch Not meeting IL_IXDB STREAM 4.64 Miles PH Aquatic Life Medium Sandy Creek criteria West Branch Not meeting IL_IXDB STREAM 4.64 Miles CADMIUM Aquatic Life Medium Sandy Creek criteria West Branch Not meeting IL_IXDB STREAM 4.64 Miles DISSOLVED OXYGEN Aquatic Life Medium Sandy Creek criteria Not meeting IL_IXFA Jackson Creek STREAM 6.6 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_IXFC Cooper Creek STREAM 5.37 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_IXI Indian Camp Creek STREAM 2.76 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_IXI-01 Indian Camp Creek STREAM 1.35 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_IXI-01 Indian Camp Creek STREAM 1.35 Miles DISSOLVED OXYGEN Aquatic Life Medium threshold Not meeting IL_IXJ-02 Big Creek STREAM 10.02 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_IXJAA Crooked Creek STREAM 6.05 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_J Mississippi River STREAM 6.4 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Table 1 Waters and Impairments Approved on Illinois 63 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_J Mississippi River STREAM 6.4 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_J-02 Mississippi River STREAM 13.83 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_J-02 Mississippi River STREAM 13.83 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_J-05 Mississippi River STREAM 44.34 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_J-05 Mississippi River STREAM 44.34 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_J-05 Mississippi River STREAM 44.34 Miles FECAL COLIFORM Medium Recreation criteria Primary Contact Not meeting IL_J-36 Mississippi River STREAM 58.71 Miles FECAL COLIFORM Medium Recreation criteria POLYCHLORINATED Not meeting IL_J-36 Mississippi River STREAM 58.71 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_J-36 Mississippi River STREAM 58.71 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_JHE-C1 Waterloo Creek STREAM 1.79 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_JHE-C1 Waterloo Creek STREAM 1.79 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_JHE-C1 Waterloo Creek STREAM 1.79 Miles Aquatic Life Medium N threshold Not meeting IL_JMA-01 Canal #1 STREAM 7.07 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Prairie du Pont Not meeting IL_JMAA-01 STREAM 14.95 Miles DISSOLVED OXYGEN Aquatic Life Medium Creek threshold Not meeting IL_JMAABA-C1 Stookey Creek STREAM 1.17 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_JMAC-02 Harding Ditch STREAM 13.8 Miles DISSOLVED OXYGEN Aquatic Life Medium threshold Not meeting IL_JN-02 Cahokia Canal STREAM 15.35 Miles IRON Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_JN-02 Cahokia Canal STREAM 15.35 Miles Aquatic Life Medium N threshold TOTAL SUSPENDED Not meeting IL_JN-02 Cahokia Canal STREAM 15.35 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_JN-02 Cahokia Canal STREAM 15.35 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold TOTAL SUSPENDED Not meeting IL_JNA-01 Canteen Creek STREAM 4.52 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_JNA-01 Canteen Creek STREAM 4.52 Miles BARIUM Aquatic Life Medium threshold Table 1 Waters and Impairments Approved on Illinois 64 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_JNA-01 Canteen Creek STREAM 4.52 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_JNA-02 Canteen Creek STREAM 10.28 Miles BARIUM Aquatic Life Medium threshold Schoenberger Not meeting IL_JNG STREAM 3.82 Miles AMMONIA, TOTAL Aquatic Life Medium Creek North criteria Schoenberger Not meeting IL_JNG STREAM 3.82 Miles DISSOLVED OXYGEN Aquatic Life Medium Creek North criteria Schoenberger Not meeting IL_JNG STREAM 3.82 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium Creek North criteria Schoenberger Not meeting IL_JNG STREAM 3.82 Miles SLUDGE Aesthetic Quality Medium Creek North criteria Schoenberger Not meeting IL_JNG STREAM 3.82 Miles BOTTOM DEPOSITS Aesthetic Quality Medium Creek North criteria Schoenberger Not meeting IL_JNG STREAM 3.82 Miles TURBIDITY Aesthetic Quality Medium Creek North criteria Schoenberger Not meeting IL_JNG STREAM 3.82 Miles MANGANESE Aquatic Life Medium Creek North criteria Not meeting IL_JNGA-PF-A1 Dot Creek STREAM 0.33 Miles BOTTOM DEPOSITS Aesthetic Quality Medium criteria Not meeting IL_JNGA-PF-A1 Dot Creek STREAM 0.33 Miles TURBIDITY Aesthetic Quality Medium criteria Not meeting IL_JNGA-PF-A1 Dot Creek STREAM 0.33 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium criteria Not meeting IL_JNGA-PF-A1 Dot Creek STREAM 0.33 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_JNGA-PF-D1 Dot Creek STREAM 0.31 Miles BOTTOM DEPOSITS Aesthetic Quality Medium criteria Not meeting IL_JNGA-PF-D1 Dot Creek STREAM 0.31 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium criteria Not meeting IL_JNGA-PF-D1 Dot Creek STREAM 0.31 Miles TURBIDITY Aesthetic Quality Medium criteria Schoenberger Not meeting IL_JNG-PF-A3 STREAM 1.02 Miles MANGANESE Aquatic Life Medium Creek North criteria Schoenberger Not meeting IL_JNG-PF-A3 STREAM 1.02 Miles DISSOLVED OXYGEN Aquatic Life Medium Creek North criteria Chain Of Rocks POLYCHLORINATED Not meeting IL_JO STREAM 9.44 Miles Fish Consumption Medium Canal BIPHENYLS (PCBS) threshold Not meeting IL_JQ-05 Cahokia Creek STREAM 10.69 Miles IRON Aquatic Life Medium threshold Cahokia Diversion Not meeting IL_JQ-07 STREAM 5.29 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Channel threshold Holiday Shores Not meeting IL_JQO-HS-C1 STREAM 0.25 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Creek threshold Table 1 Waters and Impairments Approved on Illinois 65 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Primary Contact Not meeting IL_JR-02 Wood River STREAM 2.53 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_JR-02 Wood River STREAM 2.53 Miles DISSOLVED OXYGEN Aquatic Life Medium threshold East Fork Wood Not meeting IL_JRA-02 STREAM 21.61 Miles DISSOLVED OXYGEN Aquatic Life Medium River threshold West Fork Wood Not meeting IL_JRB STREAM 16.36 Miles DISSOLVED OXYGEN Aquatic Life Medium River threshold Public and Food Not meeting IL_K-17 Mississippi River STREAM 39.13 Miles ATRAZINE Processing Water High criteria Supplies Primary Contact Not meeting IL_K-17 Mississippi River STREAM 39.13 Miles FECAL COLIFORM High Recreation criteria Not meeting IL_K-17 Mississippi River STREAM 39.13 Miles MERCURY Fish Consumption High threshold POLYCHLORINATED Not meeting IL_K-17 Mississippi River STREAM 39.13 Miles Fish Consumption High BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_K-21 Mississippi River STREAM 89.32 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_K-21 Mississippi River STREAM 89.32 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_K-21 Mississippi River STREAM 89.32 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_K-22 Mississippi River STREAM 75.05 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_K-22 Mississippi River STREAM 75.05 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_K-22 Mississippi River STREAM 75.05 Miles FECAL COLIFORM Medium Recreation criteria Public and Food Not meeting IL_K-22 Mississippi River STREAM 75.05 Miles ATRAZINE Processing Water Low criteria Supplies Not meeting IL_KC-04 The Sny STREAM 19.95 Miles IRON Aquatic Life Medium criteria Primary Contact Not meeting IL_KCA-01 Bay Creek STREAM 19 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_KCAI Panther Creek STREAM 6.27 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_KCAI Panther Creek STREAM 6.27 Miles MANGANESE Aquatic Life Medium criteria Primary Contact Not meeting IL_KI-02 Bear Creek STREAM 10.98 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_KI-03 Bear Creek STREAM 1.7 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Table 1 Waters and Impairments Approved on Illinois 66 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_KI-04 Bear Creek STREAM 5.92 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_KI-05 Bear Creek STREAM 12.69 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_LC-01 Ellison Creek STREAM 31.76 Miles IRON Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_LD-02 Henderson Creek STREAM 22.79 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_LD-02 Henderson Creek STREAM 22.79 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_LD-07 Henderson Creek STREAM 42.36 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_LDBA Jinks Hollow STREAM 9.75 Miles IRON Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_LDD-11 Cedar Creek STREAM 9.78 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_LDD-11 Cedar Creek STREAM 9.78 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_LDD-14 Cedar Creek STREAM 9.09 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_LDD-14 Cedar Creek STREAM 9.09 Miles MERCURY Fish Consumption Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_LDD-23 Cedar Creek STREAM 6.43 Miles Aquatic Life Medium N threshold Not meeting IL_LDD-23 Cedar Creek STREAM 6.43 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium threshold Not meeting IL_LDD-23 Cedar Creek STREAM 6.43 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_LDD-23 Cedar Creek STREAM 6.43 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_LDD-23 Cedar Creek STREAM 6.43 Miles Aquatic Life Medium BIPHENYLS (PCBS) threshold Not meeting IL_LDD-23 Cedar Creek STREAM 6.43 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold POLYCHLORINATED Not meeting IL_LDD-23 Cedar Creek STREAM 6.43 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold TOTAL SUSPENDED Not meeting IL_LDD-23 Cedar Creek STREAM 6.43 Miles Aquatic Life Medium SOLIDS (TSS) threshold POLYCHLORINATED Not meeting IL_LDD-A1 Cedar Creek STREAM 0.96 Miles Aquatic Life Medium BIPHENYLS (PCBS) threshold Not meeting IL_LDD-A1 Cedar Creek STREAM 0.96 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_LDD-A1 Cedar Creek STREAM 0.96 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Table 1 Waters and Impairments Approved on Illinois 67 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_LDD-A3 Cedar Creek STREAM 6.05 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_LDD-A3 Cedar Creek STREAM 6.05 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold SEDIMENTATION/SILTATIO Not meeting IL_LDDC Markham Creek STREAM 6.24 Miles Aquatic Life Medium N threshold Not meeting IL_LDDC Markham Creek STREAM 6.24 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_LDDC Markham Creek STREAM 6.24 Miles BORON Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_LDD-C1 Cedar Creek STREAM 1.32 Miles Aquatic Life Medium BIPHENYLS (PCBS) threshold Not meeting IL_LDD-C1 Cedar Creek STREAM 1.32 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_LDD-C1 Cedar Creek STREAM 1.32 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold SEDIMENTATION/SILTATIO Not meeting IL_LDD-C1 Cedar Creek STREAM 1.32 Miles Aquatic Life Medium N threshold Not meeting IL_LDD-C1 Cedar Creek STREAM 1.32 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_LDD-C2 Cedar Creek STREAM 1.37 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_LDD-C2 Cedar Creek STREAM 1.37 Miles Aquatic Life Medium BIPHENYLS (PCBS) threshold Not meeting IL_LDD-C2 Cedar Creek STREAM 1.37 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_LDD-C2 Cedar Creek STREAM 1.37 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_LDD-C2 Cedar Creek STREAM 1.37 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold SEDIMENTATION/SILTATIO Not meeting IL_LDD-C2 Cedar Creek STREAM 1.37 Miles Aquatic Life Medium N threshold Not meeting IL_LDD-C3 Cedar Creek STREAM 3.04 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_LDD-C3 Cedar Creek STREAM 3.04 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_LDD-C3 Cedar Creek STREAM 3.04 Miles Aquatic Life Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_LDD-C3 Cedar Creek STREAM 3.04 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold SEDIMENTATION/SILTATIO Not meeting IL_LDD-C6 Cedar Creek STREAM 8.17 Miles Aquatic Life Medium N threshold Not meeting IL_LDD-C6 Cedar Creek STREAM 8.17 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Table 1 Waters and Impairments Approved on Illinois 68 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_LDD-C6 Cedar Creek STREAM 8.17 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_LDD-C6 Cedar Creek STREAM 8.17 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_LF-01 Edwards River STREAM 14.33 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_LF-08 Edwards River STREAM 31.19 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_M-02 Mississippi River STREAM 88.49 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_M-02 Mississippi River STREAM 88.49 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_M-02 Mississippi River STREAM 88.49 Miles FECAL COLIFORM Medium Recreation criteria Primary Contact Not meeting IL_M-12 Mississippi River STREAM 59.91 Miles FECAL COLIFORM Medium Recreation threshold POLYCHLORINATED Not meeting IL_M-12 Mississippi River STREAM 59.91 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_M-12 Mississippi River STREAM 59.91 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_MJ-01 Plum River STREAM 31.39 Miles FECAL COLIFORM Medium Recreation criteria TOTAL SUSPENDED Not meeting IL_MJ-01 Plum River STREAM 31.39 Miles Aquatic Life Medium SOLIDS (TSS) threshold SEDIMENTATION/SILTATIO Not meeting IL_MJ-01 Plum River STREAM 31.39 Miles Aquatic Life Medium N threshold Not meeting IL_MJBA-01 Straddle Creek STREAM 11.91 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Primary Contact Not meeting IL_MN-03 Apple River STREAM 9.01 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_MNIC Wolf Creek STREAM 7.74 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_MNIC Wolf Creek STREAM 7.74 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_MNID-C4 Mud Run STREAM 4.93 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_MNID-C4 Mud Run STREAM 4.93 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_MNID-C4 Mud Run STREAM 4.93 Miles AMMONIA, TOTAL Aquatic Life Medium criteria Not meeting IL_MNJ-01 Kentucky Creek STREAM 2.45 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_MPA Smallpox Creek STREAM 14.37 Miles DISSOLVED OXYGEN Aquatic Life Medium threshold Table 1 Waters and Impairments Approved on Illinois 69 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_MQ-01 Galena River STREAM 8.64 Miles MERCURY Fish Consumption Medium threshold TOTAL SUSPENDED Not meeting IL_MQ-01 Galena River STREAM 8.64 Miles Aquatic Life Medium SOLIDS (TSS) threshold SEDIMENTATION/SILTATIO Not meeting IL_MQ-01 Galena River STREAM 8.64 Miles Aquatic Life Medium N threshold POLYCHLORINATED Not meeting IL_MQ-01 Galena River STREAM 8.64 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_MQ-02 Galena River STREAM 8.62 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_MQ-02 Galena River STREAM 8.62 Miles FECAL COLIFORM Medium Recreation threshold Not meeting IL_MQ-02 Galena River STREAM 8.62 Miles MERCURY Fish Consumption Medium threshold East Fork Galena Primary Contact Not meeting IL_MQB STREAM 11.74 Miles FECAL COLIFORM Medium River Recreation threshold SEDIMENTATION/SILTATIO Not meeting IL_MS Sinsinawa River STREAM 10.66 Miles Aquatic Life Medium N criteria SEDIMENTATION/SILTATIO Not meeting IL_MS-01 Sinsinawa River STREAM 3.48 Miles Aquatic Life Medium N threshold SEDIMENTATION/SILTATIO Not meeting IL_N-06 Big Muddy River STREAM 15.2 Miles Aquatic Life Medium N threshold POLYCHLORINATED Not meeting IL_N-06 Big Muddy River STREAM 15.2 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_N-06 Big Muddy River STREAM 15.2 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_N-08 Big Muddy River STREAM 40.04 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_N-11 Big Muddy River STREAM 11.48 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_N-11 Big Muddy River STREAM 11.48 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_N-11 Big Muddy River STREAM 11.48 Miles MERCURY Fish Consumption Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_N-11 Big Muddy River STREAM 11.48 Miles Aquatic Life Medium N threshold POLYCHLORINATED Not meeting IL_N-11 Big Muddy River STREAM 11.48 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold TOTAL SUSPENDED Not meeting IL_N-11 Big Muddy River STREAM 11.48 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_N-11 Big Muddy River STREAM 11.48 Miles IRON Aquatic Life Medium criteria Not meeting IL_N-12 Big Muddy River STREAM 15.19 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 70 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING TOTAL SUSPENDED Not meeting IL_N-12 Big Muddy River STREAM 15.19 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_N-16 Big Muddy River STREAM 11.79 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_N-16 Big Muddy River STREAM 11.79 Miles Aquatic Life Medium N threshold Not meeting IL_N-16 Big Muddy River STREAM 11.79 Miles MERCURY Fish Consumption Medium threshold TOTAL SUSPENDED Not meeting IL_N-17 Big Muddy River STREAM 21.48 Miles Aquatic Life Medium SOLIDS (TSS) threshold SEDIMENTATION/SILTATIO Not meeting IL_N-17 Big Muddy River STREAM 21.48 Miles Aquatic Life Medium N threshold Not meeting IL_N-17 Big Muddy River STREAM 21.48 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_N-99 Big Muddy River STREAM 29.22 Miles MERCURY Fish Consumption Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_NA-01 Cedar Creek STREAM 4.38 Miles Aquatic Life Medium N threshold Not meeting IL_NA-01 Cedar Creek STREAM 4.38 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria TOTAL SUSPENDED Not meeting IL_NA-01 Cedar Creek STREAM 4.38 Miles Aquatic Life Medium SOLIDS (TSS) threshold SEDIMENTATION/SILTATIO Not meeting IL_NA-02 Cedar Creek STREAM 9.55 Miles Aquatic Life Medium N threshold Not meeting IL_NA-02 Cedar Creek STREAM 9.55 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_NC-07 Beaucoup Creek STREAM 27.65 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold TOTAL SUSPENDED Not meeting IL_NC-07 Beaucoup Creek STREAM 27.65 Miles Aquatic Life Medium SOLIDS (TSS) threshold Primary Contact Not meeting IL_NC-07 Beaucoup Creek STREAM 27.65 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_NC-07 Beaucoup Creek STREAM 27.65 Miles IRON Aquatic Life Medium criteria Not meeting IL_NC-07 Beaucoup Creek STREAM 27.65 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_NC-07 Beaucoup Creek STREAM 27.65 Miles PH Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_NC-07 Beaucoup Creek STREAM 27.65 Miles Aquatic Life Medium N threshold Not meeting IL_NC-09 Beaucoup Creek STREAM 30.4 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_NCC-01 Walkers Creek STREAM 7.15 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Table 1 Waters and Impairments Approved on Illinois 71 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_NCD-03 Galum Creek STREAM 24.65 Miles SULFATE Aquatic Life Medium criteria Not meeting IL_NCD-03 Galum Creek STREAM 24.65 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_NCD-03 Galum Creek STREAM 24.65 Miles Aquatic Life Medium N threshold Not meeting IL_NCD-05 Galum Creek STREAM 14.55 Miles CAUSE UNKNOWN Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_NCDA-01 Pipestone Creek STREAM 14.33 Miles Aquatic Life Medium N threshold SEDIMENTATION/SILTATIO Not meeting IL_NCDB Little Galum Creek STREAM 16.42 Miles Aquatic Life Medium N threshold Not meeting IL_NCDC-01 Bonnie Creek STREAM 11.16 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria White Walnut Not meeting IL_NCH STREAM 9.98 Miles DISSOLVED OXYGEN Aquatic Life Medium Creek criteria Not meeting IL_NCK-01 Swanwick Creek STREAM 20.7 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_NCN Locust Creek STREAM 15.61 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_NCS Glenn Creek STREAM 10.42 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Crab Orchard Not meeting IL_ND-01 STREAM 10.41 Miles MERCURY Fish Consumption Medium Creek threshold Crab Orchard DIOXIN (INCLUDING 2,3,7,8- Not meeting IL_ND-01 STREAM 10.41 Miles Fish Consumption Medium Creek TCDD) threshold Crab Orchard DIOXIN (INCLUDING 2,3,7,8- Not meeting IL_ND-02 STREAM 2.11 Miles Fish Consumption Medium Creek TCDD) threshold Crab Orchard Not meeting IL_ND-02 STREAM 2.11 Miles MERCURY Fish Consumption Medium Creek threshold Crab Orchard SEDIMENTATION/SILTATIO Not meeting IL_ND-04 STREAM 14.77 Miles Aquatic Life Medium Creek N threshold Crab Orchard DIOXIN (INCLUDING 2,3,7,8- Not meeting IL_ND-04 STREAM 14.77 Miles Fish Consumption Medium Creek TCDD) threshold Crab Orchard Not meeting IL_ND-04 STREAM 14.77 Miles MERCURY Fish Consumption Medium Creek threshold Crab Orchard Not meeting IL_ND-11 STREAM 1.01 Miles CAUSE UNKNOWN Aquatic Life Medium Creek threshold Crab Orchard Not meeting IL_ND-11 STREAM 1.01 Miles MERCURY Fish Consumption Medium Creek threshold Crab Orchard DIOXIN (INCLUDING 2,3,7,8- Not meeting IL_ND-11 STREAM 1.01 Miles Fish Consumption Medium Creek TCDD) threshold Crab Orchard DIOXIN (INCLUDING 2,3,7,8- Not meeting IL_ND-12 STREAM 1.2 Miles Fish Consumption Medium Creek TCDD) threshold Table 1 Waters and Impairments Approved on Illinois 72 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Crab Orchard Not meeting IL_ND-12 STREAM 1.2 Miles MERCURY Fish Consumption Medium Creek threshold Crab Orchard Not meeting IL_ND-13 STREAM 1.6 Miles MERCURY Fish Consumption Medium Creek threshold Crab Orchard DIOXIN (INCLUDING 2,3,7,8- Not meeting IL_ND-13 STREAM 1.6 Miles Fish Consumption Medium Creek TCDD) threshold Crab Orchard DIOXIN (INCLUDING 2,3,7,8- Not meeting IL_ND-14 STREAM 5.69 Miles Fish Consumption Medium Creek TCDD) threshold Crab Orchard Not meeting IL_ND-14 STREAM 5.69 Miles MERCURY Fish Consumption Medium Creek threshold Little Crab Orchard Not meeting IL_NDA-01 STREAM 13.92 Miles METHOXYCHLOR Aquatic Life Medium Creek-West threshold Not meeting IL_NDB-03 Piles Fork STREAM 7.2 Miles METHOXYCHLOR Aquatic Life Medium threshold Not meeting IL_NDBA-01 Eek Creek STREAM 3.61 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_NDBA-01 Eek Creek STREAM 3.61 Miles TEMPERATURE Aquatic Life Medium criteria Not meeting IL_NDC-01 Drury Creek STREAM 19.39 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_NDC-02 Drury Creek STREAM 1.43 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_NDCA Sycamore Creek STREAM 5.66 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_NDCA Sycamore Creek STREAM 5.66 Miles PH Aquatic Life Medium criteria Not meeting IL_NDCB-01 Indian Creek STREAM 4.37 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_NDDA-01 Little Grassy Creek STREAM 5.18 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_NE-04 Little Muddy River STREAM 25.46 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_NE-04 Little Muddy River STREAM 25.46 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_NE-05 Little Muddy River STREAM 25.9 Miles IRON Aquatic Life Medium criteria Not meeting IL_NE-05 Little Muddy River STREAM 25.9 Miles PH Aquatic Life Low threshold Primary Contact Not meeting IL_NE-05 Little Muddy River STREAM 25.9 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_NE-05 Little Muddy River STREAM 25.9 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 73 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_NE-06 Little Muddy River STREAM 22.83 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_NE-06 Little Muddy River STREAM 22.83 Miles MERCURY Fish Consumption Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_NEB-02 Reese Creek STREAM 7.24 Miles Aquatic Life Medium N threshold Not meeting IL_NEB-02 Reese Creek STREAM 7.24 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_NEB-02 Reese Creek STREAM 7.24 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria IL_NEBB-DQ- Not meeting Phil Creek STREAM 1.22 Miles DISSOLVED OXYGEN Aquatic Life Medium C1A criteria Not meeting IL_NEB-DQ-A2 Reese Creek STREAM 4.14 Miles MANGANESE Aquatic Life Medium criteria Not meeting IL_NEB-DQ-C1 Reese Creek STREAM 1.31 Miles BOTTOM DEPOSITS Aesthetic Quality Medium criteria Not meeting IL_NEE-01 Little Indian Creek STREAM 8.27 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_NEE-01 Little Indian Creek STREAM 8.27 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_NEE-01 Little Indian Creek STREAM 8.27 Miles PH Aquatic Life Medium criteria Not meeting IL_NEI-01 Puncheon Creek STREAM 7.98 Miles PH Aquatic Life Medium criteria Not meeting IL_NEI-01 Puncheon Creek STREAM 7.98 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_NF-01 Hurricane Creek STREAM 11.21 Miles Aquatic Life Medium N threshold Not meeting IL_NF-01 Hurricane Creek STREAM 11.21 Miles LINDANE Aquatic Life Low threshold Not meeting IL_NG-02 Pond Creek STREAM 23.53 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_NG-02 Pond Creek STREAM 23.53 Miles CHLORIDE Aquatic Life Low criteria SEDIMENTATION/SILTATIO Not meeting IL_NG-02 Pond Creek STREAM 23.53 Miles Aquatic Life Medium N threshold Not meeting IL_NGA-02 Lake Creek STREAM 12.85 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_NGA-02 Lake Creek STREAM 12.85 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_NGAZ-JC-D1 Beaver Creek STREAM 1.7 Miles MANGANESE Aquatic Life Low criteria Middle Fork Big Not meeting IL_NH-06 STREAM 12.49 Miles CHLORIDE Aquatic Life Medium Muddy River criteria Table 1 Waters and Impairments Approved on Illinois 74 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Middle Fork Big Not meeting IL_NH-06 STREAM 12.49 Miles IRON Aquatic Life Medium Muddy River criteria Middle Fork Big Not meeting IL_NH-06 STREAM 12.49 Miles PH Aquatic Life Medium Muddy River threshold Middle Fork Big Primary Contact Not meeting IL_NH-06 STREAM 12.49 Miles FECAL COLIFORM Low Muddy River Recreation criteria Middle Fork Big Not meeting IL_NH-06 STREAM 12.49 Miles MERCURY Fish Consumption Medium Muddy River threshold Middle Fork Big Not meeting IL_NH-06 STREAM 12.49 Miles DISSOLVED OXYGEN Aquatic Life Low Muddy River criteria Middle Fork Big Not meeting IL_NH-07 STREAM 19.74 Miles DISSOLVED OXYGEN Aquatic Life Low Muddy River criteria Middle Fork Big Not meeting IL_NH-07 STREAM 19.74 Miles MERCURY Fish Consumption Medium Muddy River threshold Middle Fork Big Not meeting IL_NH-07 STREAM 19.74 Miles CHLORIDE Aquatic Life Medium Muddy River criteria Middle Fork Big SEDIMENTATION/SILTATIO Not meeting IL_NH-07 STREAM 19.74 Miles Aquatic Life Medium Muddy River N threshold Middle Fork Big Not meeting IL_NH-26 STREAM 9.25 Miles MERCURY Fish Consumption Medium Muddy River threshold Not meeting IL_NHD Little Bessie Creek STREAM 4.89 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_NHG-01 Akin Creek STREAM 6 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_NHG-02 Akin Creek STREAM 3.24 Miles CHLORIDE Aquatic Life Medium criteria Not meeting IL_NI-01 Gun Creek STREAM 12.03 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_NJ-07 Casey Fork STREAM 17.88 Miles IRON Aquatic Life Medium criteria Not meeting IL_NJ-07 Casey Fork STREAM 17.88 Miles PH Aquatic Life Medium criteria TOTAL SUSPENDED Not meeting IL_NJ-07 Casey Fork STREAM 17.88 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_NJ-07 Casey Fork STREAM 17.88 Miles CHLORIDE Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_NJ-07 Casey Fork STREAM 17.88 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_NJ-10 Casey Fork STREAM 15.69 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_NJA Atchison Creek STREAM 12.38 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_NK-02 Rayse Creek STREAM 21.18 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Table 1 Waters and Impairments Approved on Illinois 75 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING TOTAL SUSPENDED Not meeting IL_NL-01 Snow Creek STREAM 10.81 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_NL-01 Snow Creek STREAM 10.81 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_NZL Mud Creek STREAM 9.46 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_NZM-01 Prairie Creek STREAM 9.06 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_NZN-13 Andy Creek STREAM 11.68 Miles DISSOLVED OXYGEN Aquatic Life Low criteria POLYCHLORINATED Not meeting IL_O-02 Kaskaskia River STREAM 13.53 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_O-03 Kaskaskia River STREAM 15.18 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_O-03 Kaskaskia River STREAM 15.18 Miles MERCURY Fish Consumption High threshold SEDIMENTATION/SILTATIO Not meeting IL_O-03 Kaskaskia River STREAM 15.18 Miles Aquatic Life High N threshold Not meeting IL_O-07 Kaskaskia River STREAM 17.85 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_O-07 Kaskaskia River STREAM 17.85 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_O-07 Kaskaskia River STREAM 17.85 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_O-08 Kaskaskia River STREAM 17.74 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_O-08 Kaskaskia River STREAM 17.74 Miles FECAL COLIFORM Low Recreation criteria Primary Contact Not meeting IL_O-10 Kaskaskia River STREAM 23.77 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_O-10 Kaskaskia River STREAM 23.77 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_O-11 Kaskaskia River STREAM 8.87 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_O-13 Kaskaskia River STREAM 9.27 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_O-15 Kaskaskia River STREAM 14.76 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_O-17 Kaskaskia River STREAM 10.74 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Public and Food Not meeting IL_O-20 Kaskaskia River STREAM 25.25 Miles IRON Processing Water Low criteria Supplies Table 1 Waters and Impairments Approved on Illinois 76 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_O-20 Kaskaskia River STREAM 25.25 Miles PHOSPHORUS, TOTAL Aquatic Life High threshold TOTAL SUSPENDED Not meeting IL_O-20 Kaskaskia River STREAM 25.25 Miles Aquatic Life High SOLIDS (TSS) threshold Not meeting IL_O-20 Kaskaskia River STREAM 25.25 Miles TEMPERATURE Aquatic Life High criteria Not meeting IL_O-20 Kaskaskia River STREAM 25.25 Miles MERCURY Fish Consumption High threshold Not meeting IL_O-25 Kaskaskia River STREAM 14.65 Miles MERCURY Fish Consumption Medium threshold Public and Food Not meeting IL_O-25 Kaskaskia River STREAM 14.65 Miles SIMAZINE Processing Water Low criteria Supplies Not meeting IL_O-25 Kaskaskia River STREAM 14.65 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_O-30 Kaskaskia River STREAM 13.3 Miles TEMPERATURE Aquatic Life High criteria Not meeting IL_O-30 Kaskaskia River STREAM 13.3 Miles MERCURY Fish Consumption High threshold Not meeting IL_O-30 Kaskaskia River STREAM 13.3 Miles PHOSPHORUS, TOTAL Aquatic Life High threshold TOTAL SUSPENDED Not meeting IL_O-30 Kaskaskia River STREAM 13.3 Miles Aquatic Life High SOLIDS (TSS) threshold SEDIMENTATION/SILTATIO Not meeting IL_O-30 Kaskaskia River STREAM 13.3 Miles Aquatic Life High N threshold Not meeting IL_O-30 Kaskaskia River STREAM 13.3 Miles IRON Aquatic Life Low criteria Not meeting IL_O-30 Kaskaskia River STREAM 13.3 Miles PH Aquatic Life High threshold Not meeting IL_O-31 Kaskaskia River STREAM 5.25 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_O-31 Kaskaskia River STREAM 5.25 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_O-31 Kaskaskia River STREAM 5.25 Miles PH Aquatic Life Medium criteria Not meeting IL_O-32 Kaskaskia River STREAM 6.89 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_O-33 Kaskaskia River STREAM 15.21 Miles TEMPERATURE Aquatic Life Medium criteria Not meeting IL_O-33 Kaskaskia River STREAM 15.21 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_O-33 Kaskaskia River STREAM 15.21 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 77 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_O-35 Kaskaskia River STREAM 15.25 Miles PH Aquatic Life Low criteria Not meeting IL_O-35 Kaskaskia River STREAM 15.25 Miles DISSOLVED OXYGEN Aquatic Life Low criteria POLYCHLORINATED Not meeting IL_O-35 Kaskaskia River STREAM 15.25 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_O-37 Kaskaskia River STREAM 7.93 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_O-38 Kaskaskia River STREAM 21.3 Miles FECAL COLIFORM Low Recreation criteria Not meeting IL_O-38 Kaskaskia River STREAM 21.3 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_O-97 Kaskaskia River STREAM 8.91 Miles MERCURY Fish Consumption High threshold Not meeting IL_O-97 Kaskaskia River STREAM 8.91 Miles DISSOLVED OXYGEN Aquatic Life Low criteria SEDIMENTATION/SILTATIO Not meeting IL_O-97 Kaskaskia River STREAM 8.91 Miles Aquatic Life High N threshold Public and Food Not meeting IL_O-97 Kaskaskia River STREAM 8.91 Miles ATRAZINE Processing Water High criteria Supplies SEDIMENTATION/SILTATIO Not meeting IL_OB-03 Horse Creek STREAM 30.63 Miles Aquatic Life Medium N threshold Richland Creek- Not meeting IL_OC-03 STREAM 3.81 Miles PHOSPHORUS, TOTAL Aquatic Life Medium South threshold Richland Creek- Not meeting IL_OC-86 STREAM 9.01 Miles PHOSPHORUS, TOTAL Aquatic Life Medium South threshold Richland Creek- SEDIMENTATION/SILTATIO Not meeting IL_OC-90 STREAM 3.05 Miles Aquatic Life Medium South N threshold Richland Creek- Not meeting IL_OC-90 STREAM 3.05 Miles PHOSPHORUS, TOTAL Aquatic Life Medium South threshold Richland Creek- Not meeting IL_OC-95 STREAM 2.97 Miles PHOSPHORUS, TOTAL Aquatic Life Medium South threshold Prairie du Long Not meeting IL_OCB-99 STREAM 26.4 Miles DISSOLVED OXYGEN Aquatic Life Medium Creek criteria Not meeting IL_OCE-ST-C1 Douglas Creek STREAM 1.16 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium criteria Not meeting IL_OCE-ST-C1 Douglas Creek STREAM 1.16 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OCF Kinney Branch STREAM 5.53 Miles TURBIDITY Aesthetic Quality Medium criteria Not meeting IL_OCF Kinney Branch STREAM 5.53 Miles SLUDGE Aesthetic Quality Medium criteria Table 1 Waters and Impairments Approved on Illinois 78 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_OCF Kinney Branch STREAM 5.53 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OCF Kinney Branch STREAM 5.53 Miles BOTTOM DEPOSITS Aesthetic Quality Medium criteria Not meeting IL_OD-06 Silver Creek STREAM 50.75 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_OD-06 Silver Creek STREAM 50.75 Miles Aquatic Life Medium N criteria Not meeting IL_OD-06 Silver Creek STREAM 50.75 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_OD-06 Silver Creek STREAM 50.75 Miles IRON Aquatic Life Medium criteria Not meeting IL_ODE-LN-A1 Loop Creek STREAM 2.3 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_ODE-LN-C1 Loop Creek STREAM 1.23 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_ODE-LN-C3 Loop Creek STREAM 8.33 Miles Aquatic Life Medium N threshold Not meeting IL_ODE-LN-C3 Loop Creek STREAM 8.33 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_ODG-01 Little Silver Creek STREAM 15.71 Miles Aquatic Life Medium N threshold Not meeting IL_ODG-01 Little Silver Creek STREAM 15.71 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_ODG-01 Little Silver Creek STREAM 15.71 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_ODI-CE-C1 Ogles Creek STREAM 0.82 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_ODI-CE-D1 Ogles Creek STREAM 1.76 Miles CAUSE UNKNOWN Aquatic Life Medium threshold East Fork Silver Not meeting IL_ODL-02 STREAM 14.97 Miles DISSOLVED OXYGEN Aquatic Life Low Creek criteria Not meeting IL_ODLA-01 Sugar Fork STREAM 18.56 Miles MANGANESE Aquatic Life Low criteria Not meeting IL_ODLA-01 Sugar Fork STREAM 18.56 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_ODMA-TR-C3 Troy Creek STREAM 0.3 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_OE-02 Mud Creek STREAM 38.66 Miles Aquatic Life Medium N threshold Not meeting IL_OEA Little Mud Creek STREAM 15.41 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_OG-02 Elkhorn Creek STREAM 31.24 Miles MANGANESE Aquatic Life Medium criteria Table 1 Waters and Impairments Approved on Illinois 79 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_OG-02 Elkhorn Creek STREAM 31.24 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OG-02 Elkhorn Creek STREAM 31.24 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_OG-02 Elkhorn Creek STREAM 31.24 Miles Aquatic Life Medium N criteria TOTAL SUSPENDED Not meeting IL_OG-02 Elkhorn Creek STREAM 31.24 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_OH-01 Sugar Creek STREAM 23.91 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OH-05 Sugar Creek STREAM 5.79 Miles ENDRIN Aquatic Life Medium threshold Not meeting IL_OH-05 Sugar Creek STREAM 5.79 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_OH-05 Sugar Creek STREAM 5.79 Miles Aquatic Life Medium N threshold Not meeting IL_OH-05 Sugar Creek STREAM 5.79 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_OHA-02 Lake Branch-East STREAM 4.52 Miles Aquatic Life Medium N threshold TOTAL SUSPENDED Not meeting IL_OHA-02 Lake Branch-East STREAM 4.52 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_OHA-02 Lake Branch-East STREAM 4.52 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OHA-03 Lake Branch-East STREAM 2.25 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_OHA-03 Lake Branch-East STREAM 2.25 Miles Aquatic Life Medium N threshold SEDIMENTATION/SILTATIO Not meeting IL_OHA-04 Lake Branch-East STREAM 2.08 Miles Aquatic Life Medium N threshold Not meeting IL_OHA-04 Lake Branch-East STREAM 2.08 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold TOTAL SUSPENDED Not meeting IL_OHA-04 Lake Branch-East STREAM 2.08 Miles Aquatic Life Medium SOLIDS (TSS) threshold SEDIMENTATION/SILTATIO Not meeting IL_OHA-05 Lake Branch-East STREAM 1.39 Miles Aquatic Life Medium N threshold TOTAL SUSPENDED Not meeting IL_OHA-05 Lake Branch-East STREAM 1.39 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_OHA-05 Lake Branch-East STREAM 1.39 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OHA-06 Lake Branch-East STREAM 3.79 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold TOTAL SUSPENDED Not meeting IL_OHA-06 Lake Branch-East STREAM 3.79 Miles Aquatic Life Medium SOLIDS (TSS) threshold Table 1 Waters and Impairments Approved on Illinois 80 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_OHAA-07 Bull Branch STREAM 4.04 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_OHAA-07 Bull Branch STREAM 4.04 Miles Aquatic Life Medium N threshold TOTAL SUSPENDED Not meeting IL_OHAA-07 Bull Branch STREAM 4.04 Miles Aquatic Life Medium SOLIDS (TSS) threshold SEDIMENTATION/SILTATIO Not meeting IL_OHC Grassy Branch STREAM 8.62 Miles Aquatic Life Medium N threshold Not meeting IL_OHC Grassy Branch STREAM 8.62 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Sewer Creek Not meeting IL_OHE-HL-A1 STREAM 2.99 Miles CAUSE UNKNOWN Aquatic Life Medium (Highland STP) threshold Sewer Creek Not meeting IL_OHE-HL-C1 STREAM 1.36 Miles PHOSPHORUS, TOTAL Aquatic Life Medium (Highland STP) threshold Not meeting IL_OHF-TR-A1 Trenton Creek STREAM 1.3 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_OHF-TR-C1 Trenton Creek STREAM 0.97 Miles SLUDGE Aquatic Life Medium criteria Not meeting IL_OHF-TR-C1 Trenton Creek STREAM 0.97 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OHF-TR-C3 Trenton Creek STREAM 2.03 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OH-HL-D1 Sugar Creek STREAM 11.89 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OI-05 Shoal Creek STREAM 13.37 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_OI-13 Shoal Creek STREAM 11.49 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_OI-15 Shoal Creek STREAM 11.12 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_OIB-01 Beaver Creek STREAM 22.31 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_OIB-02 Beaver Creek STREAM 21.42 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_OIBA-01 Flat Branch STREAM 12.5 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OIBA-01 Flat Branch STREAM 12.5 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_OIBA-01 Flat Branch STREAM 12.5 Miles MANGANESE Aquatic Life Medium criteria Middle Fork Shoal Not meeting IL_OIL-03 STREAM 8.42 Miles DISSOLVED OXYGEN Aquatic Life Medium Creek criteria Middle Fork Shoal Not meeting IL_OIL-HB-C1 STREAM 2.32 Miles MANGANESE Aquatic Life Medium Creek criteria Table 1 Waters and Impairments Approved on Illinois 81 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Middle Fork Shoal Not meeting IL_OIL-HB-C1 STREAM 2.32 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Creek threshold Middle Fork Shoal Not meeting IL_OIL-HB-C1 STREAM 2.32 Miles DISSOLVED OXYGEN Aquatic Life Medium Creek criteria West Fork Shoal Not meeting IL_OIM-02 STREAM 10.63 Miles DISSOLVED OXYGEN Aquatic Life Medium Creek criteria West Fork Shoal Not meeting IL_OIM-02 STREAM 10.63 Miles TEMPERATURE Aquatic Life Medium Creek criteria Not meeting IL_OIO-09 Chicken Creek STREAM 1.53 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_OIO-09 Chicken Creek STREAM 1.53 Miles Aquatic Life Medium N threshold TOTAL SUSPENDED Not meeting IL_OIO-09 Chicken Creek STREAM 1.53 Miles Aquatic Life Medium SOLIDS (TSS) threshold TOTAL SUSPENDED Not meeting IL_OIP-10 Cattle Creek STREAM 3.08 Miles Aquatic Life Medium SOLIDS (TSS) threshold SEDIMENTATION/SILTATIO Not meeting IL_OIP-10 Cattle Creek STREAM 3.08 Miles Aquatic Life Medium N threshold Not meeting IL_OIP-10 Cattle Creek STREAM 3.08 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OJ-07 Crooked Creek STREAM 34.46 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_OJ-07 Crooked Creek STREAM 34.46 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OJ-08 Crooked Creek STREAM 24.34 Miles TURBIDITY Aesthetic Quality Medium threshold TOTAL SUSPENDED Not meeting IL_OJ-08 Crooked Creek STREAM 24.34 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_OJ-08 Crooked Creek STREAM 24.34 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OJ-11 Crooked Creek STREAM 15.72 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Little Crooked Not meeting IL_OJA-01 STREAM 17.65 Miles MANGANESE Aquatic Life Medium Creek criteria Little Crooked Not meeting IL_OJA-01 STREAM 17.65 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Creek threshold Not meeting IL_OJAF-NV-A1 Nashville Creek STREAM 6.86 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_OJAF-NV-C1 Nashville Creek STREAM 1.09 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OJAF-NV-C1 Nashville Creek STREAM 1.09 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_OJAF-NV-C3 Nashville Creek STREAM 2.99 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Table 1 Waters and Impairments Approved on Illinois 82 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING SEDIMENTATION/SILTATIO Not meeting IL_OJB-04 Lost Creek STREAM 25.75 Miles Aquatic Life Medium N criteria Not meeting IL_OJB-04 Lost Creek STREAM 25.75 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OJB-04 Lost Creek STREAM 25.75 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_OJBA Prairie Creek STREAM 21.8 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_OJBA Prairie Creek STREAM 21.8 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_OJC-01 Grand Point Creek STREAM 16.55 Miles Aquatic Life High N criteria Not meeting IL_OJC-01 Grand Point Creek STREAM 16.55 Miles DISSOLVED OXYGEN Aquatic Life High criteria Not meeting IL_OJC-03 Grand Point Creek STREAM 12.65 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria SEDIMENTATION/SILTATIO Not meeting IL_OJC-03 Grand Point Creek STREAM 12.65 Miles Aquatic Life Medium N criteria SEDIMENTATION/SILTATIO Not meeting IL_OJCB-19 Sewer Creek STREAM 3.13 Miles Aquatic Life Medium N threshold Not meeting IL_OJCB-19 Sewer Creek STREAM 3.13 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OJF Raccoon Creek STREAM 17.08 Miles DISSOLVED OXYGEN Aquatic Life Low criteria SEDIMENTATION/SILTATIO Not meeting IL_OJK-02 Town Creek STREAM 7.02 Miles Aquatic Life Medium N threshold Not meeting IL_OJK-03 Town Creek STREAM 2.04 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold East Fork Not meeting IL_OK-02 STREAM 18.72 Miles DISSOLVED OXYGEN Aquatic Life Low Kaskaskia River criteria East Fork Not meeting IL_OK-02 STREAM 18.72 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Kaskaskia River threshold North Fork Not meeting IL_OKA-01 STREAM 11.83 Miles ATRAZINE Aquatic Life Low Kaskaskia River criteria North Fork Not meeting IL_OKA-01 STREAM 11.83 Miles TERBUFOS Aquatic Life Low Kaskaskia River criteria North Fork Not meeting IL_OKA-01 STREAM 11.83 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Kaskaskia River threshold North Fork Not meeting IL_OKA-02 STREAM 18.56 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Kaskaskia River threshold Primary Contact Not meeting IL_OL-02 Hurricane Creek STREAM 27.44 Miles FECAL COLIFORM Medium Recreation criteria Primary Contact Not meeting IL_ON-01 Hickory Creek STREAM 23.88 Miles FECAL COLIFORM Medium Recreation criteria Table 1 Waters and Impairments Approved on Illinois 83 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_OQCA-01 Coal Creek STREAM 1.33 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OT-02 West Okaw River STREAM 5.39 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_OT-03 West Okaw River STREAM 15.59 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_OT-04 West Okaw River STREAM 5.07 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_OU-01 Jonathan Creek STREAM 19.25 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_OW-01 Lake Fork STREAM 9.72 Miles DISSOLVED OXYGEN Aquatic Life Low criteria POLYCHLORINATED Not meeting IL_OW-01 Lake Fork STREAM 9.72 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold SEDIMENTATION/SILTATIO Not meeting IL_OW-01 Lake Fork STREAM 9.72 Miles Aquatic Life Medium N threshold Not meeting IL_OW-01 Lake Fork STREAM 9.72 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_OW-01 Lake Fork STREAM 9.72 Miles CHLORIDE Aquatic Life Low criteria Not meeting IL_OW-02 Lake Fork STREAM 4.91 Miles CHLORIDE Aquatic Life Low criteria SEDIMENTATION/SILTATIO Not meeting IL_OW-02 Lake Fork STREAM 4.91 Miles Aquatic Life Medium N threshold POLYCHLORINATED Not meeting IL_OW-02 Lake Fork STREAM 4.91 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_OW-02 Lake Fork STREAM 4.91 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_OW-02 Lake Fork STREAM 4.91 Miles DISSOLVED OXYGEN Aquatic Life Low criteria POLYCHLORINATED Not meeting IL_OW-03 Lake Fork STREAM 19.68 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_OW-03 Lake Fork STREAM 19.68 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_OZCB-SP-A1 Sparta Creek STREAM 0.66 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_OZCB-SP-C1 Sparta Creek STREAM 2.26 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OZD Doza Creek STREAM 20.07 Miles DISSOLVED OXYGEN Aquatic Life Low criteria Not meeting IL_OZD Doza Creek STREAM 20.07 Miles MANGANESE Aquatic Life Low criteria Not meeting IL_OZD Doza Creek STREAM 20.07 Miles SLUDGE Aquatic Life High criteria Table 1 Waters and Impairments Approved on Illinois 84 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING SEDIMENTATION/SILTATIO Not meeting IL_OZD Doza Creek STREAM 20.07 Miles Aquatic Life High N criteria Not meeting IL_OZD Doza Creek STREAM 20.07 Miles PHOSPHORUS, TOTAL Aquatic Life High threshold Not meeting IL_OZH-OK-A2 Plum Creek-North STREAM 7.23 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold TOTAL SUSPENDED Not meeting IL_OZH-OK-A2 Plum Creek-North STREAM 7.23 Miles Aquatic Life Medium SOLIDS (TSS) threshold SEDIMENTATION/SILTATIO Not meeting IL_OZH-OK-A2 Plum Creek-North STREAM 7.23 Miles Aquatic Life Medium N threshold Not meeting IL_OZH-OK-C2 Plum Creek-North STREAM 2.11 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_OZH-OK-C3 Plum Creek-North STREAM 2.25 Miles Aquatic Life Medium N threshold Not meeting IL_OZH-OK-C3 Plum Creek-North STREAM 2.25 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_OZZJ-01 Jordan Creek STREAM 10.39 Miles CAUSE UNKNOWN Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_OZZT-01 Asa Creek STREAM 9.22 Miles Aquatic Life Medium N threshold Not meeting IL_OZZU Coon Creek-North STREAM 4.93 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_OZZW Dry Fork STREAM 12.03 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_P-04 Rock River STREAM 29.63 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_P-04 Rock River STREAM 29.63 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_P-06 Rock River STREAM 11.31 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_P-06 Rock River STREAM 11.31 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_P-09 Rock River STREAM 6.65 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_P-09 Rock River STREAM 6.65 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_P-09 Rock River STREAM 6.65 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_P-14 Rock River STREAM 11.01 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_P-14 Rock River STREAM 11.01 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_P-15 Rock River STREAM 20.43 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 85 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING POLYCHLORINATED Not meeting IL_P-15 Rock River STREAM 20.43 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_P-20 Rock River STREAM 25.14 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_P-20 Rock River STREAM 25.14 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_P-21 Rock River STREAM 18.47 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_P-21 Rock River STREAM 18.47 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_P-23 Rock River STREAM 7.5 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_P-23 Rock River STREAM 7.5 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_P-24 Rock River STREAM 25.55 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_P-24 Rock River STREAM 25.55 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_P-25 Rock River STREAM 15.96 Miles CAUSE UNKNOWN Aquatic Life Medium threshold POLYCHLORINATED Not meeting IL_P-25 Rock River STREAM 15.96 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_P-25 Rock River STREAM 15.96 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_PB-04 Green River STREAM 6.48 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_PB-09 Green River STREAM 13.93 Miles CAUSE UNKNOWN Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_PBE-01 Geneseo Creek STREAM 14.17 Miles Aquatic Life Medium N threshold Not meeting IL_PBG-10 Big Slough Ditch STREAM 4.49 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold Not meeting IL_PBG-10 Big Slough Ditch STREAM 4.49 Miles ALDRIN Aquatic Life Medium threshold Not meeting IL_PBG-12 Big Slough Ditch STREAM 7.8 Miles BARIUM Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_PBI-03 Spring Creek STREAM 2.37 Miles Aquatic Life Medium N threshold Not meeting IL_PBJ-04 Mud Creek-East STREAM 28.34 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_PBJA-04 Coal Creek STREAM 4.56 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Fairfield Ditch No. Not meeting IL_PBM-11 STREAM 12.52 Miles ALDRIN Aquatic Life Medium 1 threshold Table 1 Waters and Impairments Approved on Illinois 86 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Fairfield Ditch No. Not meeting IL_PBM-11 STREAM 12.52 Miles DISSOLVED OXYGEN Aquatic Life Medium 1 criteria Fairfield Union SEDIMENTATION/SILTATIO Not meeting IL_PBO-10 STREAM 7.32 Miles Aquatic Life Medium Special Ditch N threshold Fairfield Union Not meeting IL_PBO-10 STREAM 7.32 Miles ALDRIN Aquatic Life Medium Special Ditch threshold Walnut Special Not meeting IL_PBP-01 STREAM 4.39 Miles ALDRIN Aquatic Life Medium Ditch threshold Primary Contact Not meeting IL_PE-05 Rock Creek STREAM 9.4 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_PEE-01 Otter Creek STREAM 15.33 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_PFA County Ditch No. 1 STREAM 16.07 Miles BOTTOM DEPOSITS Aquatic Life Medium criteria Not meeting IL_PFA County Ditch No. 1 STREAM 16.07 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_PH-01 Elkhorn Creek STREAM 12.89 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_PH-01 Elkhorn Creek STREAM 12.89 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_PH-14 Elkhorn Creek STREAM 4.98 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_PH-14 Elkhorn Creek STREAM 4.98 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_PH-16 Elkhorn Creek STREAM 17.6 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_PH-16 Elkhorn Creek STREAM 17.6 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_PH-17 Elkhorn Creek STREAM 20.52 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_PH-17 Elkhorn Creek STREAM 20.52 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold TOTAL SUSPENDED Not meeting IL_PH-17 Elkhorn Creek STREAM 20.52 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_PHE-C1 Buffalo Creek STREAM 2.07 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Mt Morris Creek Not meeting IL_PJBA-C1 STREAM 2.77 Miles PHOSPHORUS, TOTAL Aquatic Life Medium North threshold Primary Contact Not meeting IL_PL-03 Kyte River STREAM 9.22 Miles FECAL COLIFORM Medium Recreation criteria South Branch Not meeting IL_PLBA STREAM 4.92 Miles CAUSE UNKNOWN Aquatic Life Medium Beach Creek threshold Not meeting IL_PLB-C1 Beach Creek STREAM 1.95 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Table 1 Waters and Impairments Approved on Illinois 87 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_PLB-C1 Beach Creek STREAM 1.95 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_PLB-C1 Beach Creek STREAM 1.95 Miles Aquatic Life Medium N threshold Not meeting IL_PLB-C3 Beach Creek STREAM 3.04 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_PO-C1 Mill Creek-North STREAM 2.27 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_PO-C1 Mill Creek-North STREAM 2.27 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Primary Contact Not meeting IL_PQ-02 Kishwaukee River STREAM 4.75 Miles FECAL COLIFORM Medium Recreation criteria POLYCHLORINATED Not meeting IL_PQ-02 Kishwaukee River STREAM 4.75 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_PQ-02 Kishwaukee River STREAM 4.75 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_PQ-07 Kishwaukee River STREAM 5.14 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_PQ-07 Kishwaukee River STREAM 5.14 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_PQ-10 Kishwaukee River STREAM 12.87 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_PQ-10 Kishwaukee River STREAM 12.87 Miles MERCURY Fish Consumption Medium threshold Primary Contact Not meeting IL_PQ-10 Kishwaukee River STREAM 12.87 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_PQ-12 Kishwaukee River STREAM 14.12 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_PQ-12 Kishwaukee River STREAM 14.12 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Primary Contact Not meeting IL_PQ-12 Kishwaukee River STREAM 14.12 Miles FECAL COLIFORM Medium Recreation criteria SEDIMENTATION/SILTATIO Not meeting IL_PQ-13 Kishwaukee River STREAM 19.84 Miles Aquatic Life Medium N threshold POLYCHLORINATED Not meeting IL_PQ-13 Kishwaukee River STREAM 19.84 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_PQ-13 Kishwaukee River STREAM 19.84 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_PQ-13 Kishwaukee River STREAM 19.84 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_PQ-14 Kishwaukee River STREAM 11.6 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_PQ-14 Kishwaukee River STREAM 11.6 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 88 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Primary Contact Not meeting IL_PQB-02 Killbuck Creek STREAM 6.56 Miles FECAL COLIFORM Medium Recreation criteria East Branch Not meeting IL_PQBA STREAM 14.93 Miles PHOSPHORUS, TOTAL Aquatic Life Medium Killbuck Creek threshold South Branch Not meeting IL_PQC-02 STREAM 12.37 Miles MERCURY Fish Consumption Medium Kishwaukee River threshold South Branch POLYCHLORINATED Not meeting IL_PQC-02 STREAM 12.37 Miles Fish Consumption Medium Kishwaukee River BIPHENYLS (PCBS) threshold South Branch Not meeting IL_PQC-05 STREAM 15.88 Miles MERCURY Fish Consumption Medium Kishwaukee River threshold South Branch Not meeting IL_PQC-05 STREAM 15.88 Miles CAUSE UNKNOWN Aquatic Life Medium Kishwaukee River threshold South Branch POLYCHLORINATED Not meeting IL_PQC-05 STREAM 15.88 Miles Fish Consumption Medium Kishwaukee River BIPHENYLS (PCBS) threshold South Branch Not meeting IL_PQC-06 STREAM 5.5 Miles PH Aquatic Life Medium Kishwaukee River criteria South Branch POLYCHLORINATED Not meeting IL_PQC-06 STREAM 5.5 Miles Fish Consumption Medium Kishwaukee River BIPHENYLS (PCBS) threshold South Branch Not meeting IL_PQC-06 STREAM 5.5 Miles MERCURY Fish Consumption Medium Kishwaukee River threshold South Branch Not meeting IL_PQC-06 STREAM 5.5 Miles DISSOLVED OXYGEN Aquatic Life Medium Kishwaukee River criteria South Branch Primary Contact Not meeting IL_PQC-06 STREAM 5.5 Miles FECAL COLIFORM Medium Kishwaukee River Recreation criteria South Branch POLYCHLORINATED Not meeting IL_PQC-09 STREAM 9.18 Miles Fish Consumption Medium Kishwaukee River BIPHENYLS (PCBS) threshold South Branch Not meeting IL_PQC-09 STREAM 9.18 Miles MERCURY Fish Consumption Medium Kishwaukee River threshold South Branch Not meeting IL_PQC-11 STREAM 9.71 Miles MERCURY Fish Consumption Medium Kishwaukee River threshold South Branch POLYCHLORINATED Not meeting IL_PQC-11 STREAM 9.71 Miles Fish Consumption Medium Kishwaukee River BIPHENYLS (PCBS) threshold South Branch POLYCHLORINATED Not meeting IL_PQC-13 STREAM 14.21 Miles Fish Consumption Medium Kishwaukee River BIPHENYLS (PCBS) threshold South Branch Not meeting IL_PQC-13 STREAM 14.21 Miles MERCURY Fish Consumption Medium Kishwaukee River threshold South Branch Not meeting IL_PQC-13 STREAM 14.21 Miles BOTTOM DEPOSITS Aesthetic Quality Medium Kishwaukee River criteria Not meeting IL_PQCE Deer Creek STREAM 9.66 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_PQE-06 Piscasaw Creek STREAM 12.67 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_PQE-07 Piscasaw Creek STREAM 14.6 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 89 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Not meeting IL_PQEA-H-C1 Mokeler Creek STREAM 1.25 Miles CAUSE UNKNOWN Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_PQEA-H-C1 Mokeler Creek STREAM 1.25 Miles Aquatic Life Medium N threshold Not meeting IL_PQEC-A Lawrence Creek STREAM 4.35 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_PQEC-C Lawrence Creek STREAM 3.93 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_PQF-06 Coon Creek STREAM 6.44 Miles Aquatic Life Medium N threshold Primary Contact Not meeting IL_PQF-07 Coon Creek STREAM 23.17 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_PQFD-H-C1 Hampshire Creek STREAM 3.47 Miles BARIUM Aquatic Life Medium threshold Not meeting IL_PQFD-H-C1 Hampshire Creek STREAM 3.47 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_PQFD-H-C1 Hampshire Creek STREAM 3.47 Miles ARSENIC Aquatic Life Medium threshold Not meeting IL_PQFD-H-C1 Hampshire Creek STREAM 3.47 Miles FLUORIDE Aquatic Life Medium criteria South Branch Not meeting IL_PQI-10 Kishwaukee River- STREAM 6.76 Miles BARIUM Aquatic Life Medium threshold East South Branch SEDIMENTATION/SILTATIO Not meeting IL_PQI-10 Kishwaukee River- STREAM 6.76 Miles Aquatic Life Medium N threshold East South Branch Not meeting IL_PQI-10 Kishwaukee River- STREAM 6.76 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria East South Branch Not meeting IL_PQI-10 Kishwaukee River- STREAM 6.76 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold East Not meeting IL_PQIB-H-C1 Huntley Ditch STREAM 0.6 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_PQIB-H-C1 Huntley Ditch STREAM 0.6 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold Not meeting IL_PQIB-H-C1 Huntley Ditch STREAM 0.6 Miles CHLORIDE Aquatic Life Medium criteria Not meeting IL_PQIB-H-C1 Huntley Ditch STREAM 0.6 Miles ZINC Aquatic Life Medium criteria Not meeting IL_PQIB-H-C1 Huntley Ditch STREAM 0.6 Miles COPPER Aquatic Life Medium threshold Not meeting IL_PQIB-H-C1 Huntley Ditch STREAM 0.6 Miles BARIUM Aquatic Life Medium threshold Table 1 Waters and Impairments Approved on Illinois 90 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING SEDIMENTATION/SILTATIO Not meeting IL_PQIB-H-C1 Huntley Ditch STREAM 0.6 Miles Aquatic Life Medium N threshold South Branch Not meeting IL_PQI-H-C3 Kishwaukee River- STREAM 2.69 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold East South Branch Not meeting IL_PQI-H-C5 Kishwaukee River- STREAM 4.29 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold East South Branch Not meeting IL_PQI-H-C5 Kishwaukee River- STREAM 4.29 Miles COPPER Aquatic Life Medium criteria East South Branch Not meeting IL_PQI-H-C5 Kishwaukee River- STREAM 4.29 Miles CHLORIDE Aquatic Life Medium criteria East South Branch Not meeting IL_PQI-H-C5 Kishwaukee River- STREAM 4.29 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria East South Branch SEDIMENTATION/SILTATIO Not meeting IL_PQI-H-D1 Kishwaukee River- STREAM 5.86 Miles Aquatic Life Medium N threshold East U-Trib Kishwaukee Not meeting IL_PQZB STREAM 2.92 Miles ETHANOL Aesthetic Quality Medium River criteria U-Trib Kishwaukee Not meeting IL_PQZB STREAM 2.92 Miles ETHANOL Aquatic Life Medium River threshold Primary Contact Not meeting IL_PR-01 Keith Creek STREAM 10.43 Miles FECAL COLIFORM Medium Recreation criteria Not meeting IL_PR-99 Keith Creek STREAM 3.44 Miles METHOXYCHLOR Aquatic Life Medium threshold Not meeting IL_PR-99 Keith Creek STREAM 3.44 Miles PH Aquatic Life Medium criteria Not meeting IL_PR-99 Keith Creek STREAM 3.44 Miles ARSENIC Aquatic Life Medium threshold Not meeting IL_PR-99 Keith Creek STREAM 3.44 Miles ZINC Aquatic Life Medium criteria Primary Contact Not meeting IL_PR-99 Keith Creek STREAM 3.44 Miles FECAL COLIFORM Medium Recreation criteria Primary Contact Not meeting IL_PS Kent Creek STREAM 0.5 Miles FECAL COLIFORM Medium Recreation criteria South Fork Kent Primary Contact Not meeting IL_PSA STREAM 9.6 Miles FECAL COLIFORM Medium Creek Recreation criteria North Fork Kent Primary Contact Not meeting IL_PSB-01 STREAM 12.13 Miles FECAL COLIFORM Medium Creek Recreation criteria South Kinnikinnick Primary Contact Not meeting IL_PT STREAM 14.43 Miles FECAL COLIFORM Medium Creek Recreation criteria Table 1 Waters and Impairments Approved on Illinois 91 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING North Kinnikinnick Primary Contact Not meeting IL_PU STREAM 15.28 Miles FECAL COLIFORM Medium Creek Recreation criteria Not meeting IL_PV-01 Dry Creek STREAM 9.38 Miles CAUSE UNKNOWN Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_PW-01 Pecatonica River STREAM 7.01 Miles Aquatic Life Medium N threshold TOTAL SUSPENDED Not meeting IL_PW-01 Pecatonica River STREAM 7.01 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_PW-01 Pecatonica River STREAM 7.01 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_PW-01 Pecatonica River STREAM 7.01 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_PW-02 Pecatonica River STREAM 18.75 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_PW-02 Pecatonica River STREAM 18.75 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold SEDIMENTATION/SILTATIO Not meeting IL_PW-04 Pecatonica River STREAM 7.29 Miles Aquatic Life Medium N threshold Not meeting IL_PW-04 Pecatonica River STREAM 7.29 Miles MERCURY Fish Consumption Medium threshold TOTAL SUSPENDED Not meeting IL_PW-04 Pecatonica River STREAM 7.29 Miles Aquatic Life Medium SOLIDS (TSS) threshold POLYCHLORINATED Not meeting IL_PW-04 Pecatonica River STREAM 7.29 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_PW-06 Pecatonica River STREAM 22.72 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_PW-06 Pecatonica River STREAM 22.72 Miles MERCURY Fish Consumption Medium threshold Not meeting IL_PW-07 Pecatonica River STREAM 20.7 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_PW-07 Pecatonica River STREAM 20.7 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_PW-08 Pecatonica River STREAM 7.59 Miles MERCURY Fish Consumption Medium threshold POLYCHLORINATED Not meeting IL_PW-08 Pecatonica River STREAM 7.59 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold TOTAL SUSPENDED Not meeting IL_PW-08 Pecatonica River STREAM 7.59 Miles Aquatic Life Medium SOLIDS (TSS) threshold SEDIMENTATION/SILTATIO Not meeting IL_PW-08 Pecatonica River STREAM 7.59 Miles Aquatic Life Medium N threshold POLYCHLORINATED Not meeting IL_PW-13 Pecatonica River STREAM 9.4 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_PW-13 Pecatonica River STREAM 9.4 Miles MERCURY Fish Consumption Medium threshold Table 1 Waters and Impairments Approved on Illinois 92 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING POLYCHLORINATED Not meeting IL_PWB-01 Sugar River STREAM 5.65 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold POLYCHLORINATED Not meeting IL_PWB-03 Sugar River STREAM 4.67 Miles Fish Consumption Medium BIPHENYLS (PCBS) threshold Not meeting IL_PWBA Otter Creek STREAM 6.37 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_PWBA Otter Creek STREAM 6.37 Miles BOTTOM DEPOSITS Aesthetic Quality Medium threshold South Branch Otter Not meeting IL_PWBC STREAM 9.82 Miles CAUSE UNKNOWN Aquatic Life Medium Creek threshold Not meeting IL_PWF-L-C1 Coolidge Creek STREAM 2.73 Miles CAUSE UNKNOWN Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_PWF-W-C1 Coolidge Creek STREAM 2.56 Miles Aquatic Life Medium N threshold Not meeting IL_PWF-W-C1 Coolidge Creek STREAM 2.56 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold SEDIMENTATION/SILTATIO Not meeting IL_PWL-01 Winneshiek Creek STREAM 10.15 Miles Aquatic Life Medium N threshold Not meeting IL_PWL-01 Winneshiek Creek STREAM 10.15 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Not meeting IL_PWL-01 Winneshiek Creek STREAM 10.15 Miles CAUSE UNKNOWN Aquatic Life Medium threshold TOTAL SUSPENDED Not meeting IL_PWL-01 Winneshiek Creek STREAM 10.15 Miles Aquatic Life Medium SOLIDS (TSS) threshold Not meeting IL_PWN-02 Yellow Creek STREAM 30.63 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_PWN-02 Yellow Creek STREAM 30.63 Miles BOTTOM DEPOSITS Aesthetic Quality Medium criteria Not meeting IL_PWN-02 Yellow Creek STREAM 30.63 Miles PHOSPHORUS, TOTAL Aesthetic Quality Medium criteria Not meeting IL_PWNB Lost Creek STREAM 13.21 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_PWNC Spring Branch STREAM 4.7 Miles PHOSPHORUS, TOTAL Aquatic Life Medium threshold Primary Contact Not meeting IL_PZZG Spring Creek-North STREAM 8.68 Miles FECAL COLIFORM Medium Recreation criteria South Branch Not meeting IL_QAA-D1 STREAM 2.69 Miles HEPTACHLOR Aquatic Life Medium Pettibone Creek threshold South Branch Not meeting IL_QAA-D1 STREAM 2.69 Miles ENDRIN Aquatic Life Medium Pettibone Creek threshold South Branch POLYCHLORINATED Not meeting IL_QAA-D1 STREAM 2.69 Miles Aquatic Life Medium Pettibone Creek BIPHENYLS (PCBS) threshold South Branch Not meeting IL_QAA-D1 STREAM 2.69 Miles ALPHA-BHC Aquatic Life Medium Pettibone Creek threshold Table 1 Waters and Impairments Approved on Illinois 93 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING POLYCHLORINATED Not meeting IL_QA-C4 Pettibone Creek STREAM 1.45 Miles Aquatic Life Medium BIPHENYLS (PCBS) threshold Not meeting IL_QA-C4 Pettibone Creek STREAM 1.45 Miles COPPER Aquatic Life Medium criteria Not meeting IL_QA-C4 Pettibone Creek STREAM 1.45 Miles DIELDRIN Aquatic Life Medium threshold Not meeting IL_QA-C4 Pettibone Creek STREAM 1.45 Miles ZINC Aquatic Life Medium criteria Not meeting IL_QA-C4 Pettibone Creek STREAM 1.45 Miles NICKEL Aquatic Life Medium criteria Not meeting IL_QA-C4 Pettibone Creek STREAM 1.45 Miles ENDRIN Aquatic Life Medium threshold Not meeting IL_QA-C4 Pettibone Creek STREAM 1.45 Miles MANGANESE Aquatic Life Medium criteria Not meeting IL_QA-C4 Pettibone Creek STREAM 1.45 Miles ARSENIC Aquatic Life Medium criteria Not meeting IL_QA-C4 Pettibone Creek STREAM 1.45 Miles LEAD Aquatic Life Medium criteria Not meeting IL_QA-C4 Pettibone Creek STREAM 1.45 Miles ALPHA-BHC Aquatic Life Medium threshold Not meeting IL_QA-C4 Pettibone Creek STREAM 1.45 Miles SILVER Aquatic Life Medium criteria Not meeting IL_QA-C4 Pettibone Creek STREAM 1.45 Miles MERCURY Aquatic Life Medium criteria Not meeting IL_QC-03 Waukegan River STREAM 5.48 Miles HEXACHLOROBENZENE Aquatic Life Medium threshold DDT Not meeting IL_QC-03 Waukegan River STREAM 5.48 Miles (DICHLORODIPHENYLTRIC Aquatic Life Medium threshold HLOROETHANE) Not meeting IL_QC-03 Waukegan River STREAM 5.48 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria POLYCHLORINATED Not meeting IL_QC-03 Waukegan River STREAM 5.48 Miles Aquatic Life Medium BIPHENYLS (PCBS) threshold Not meeting IL_QC-03 Waukegan River STREAM 5.48 Miles ALDRIN Aquatic Life Medium threshold POLYCHLORINATED Not meeting IL_QC-05 Waukegan River STREAM 0.54 Miles Aquatic Life Medium BIPHENYLS (PCBS) threshold DDT Not meeting IL_QC-05 Waukegan River STREAM 0.54 Miles (DICHLORODIPHENYLTRIC Aquatic Life Medium threshold HLOROETHANE) DDT South Branch Not meeting IL_QCA-01 STREAM 0.86 Miles (DICHLORODIPHENYLTRIC Aquatic Life Medium Waukegan River threshold HLOROETHANE) Table 1 Waters and Impairments Approved on Illinois 94 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING South Branch Not meeting IL_QCA-01 STREAM 0.86 Miles ALDRIN Aquatic Life Medium Waukegan River threshold South Branch Not meeting IL_QCA-01 STREAM 0.86 Miles CHROMIUM, TOTAL Aquatic Life Medium Waukegan River threshold South Branch Not meeting IL_QCA-01 STREAM 0.86 Miles NICKEL Aquatic Life Medium Waukegan River threshold South Branch Not meeting IL_QCA-01 STREAM 0.86 Miles SILVER Aquatic Life Medium Waukegan River threshold South Branch Not meeting IL_QCA-01 STREAM 0.86 Miles HEXACHLOROBENZENE Aquatic Life Medium Waukegan River threshold Not meeting IL_QE-01 Dead Dog Creek STREAM 4.67 Miles CAUSE UNKNOWN Aquatic Life Medium threshold Not meeting IL_QE-01 Dead Dog Creek STREAM 4.67 Miles ALDRIN Aquatic Life Medium threshold Not meeting IL_QF Kellogg Creek STREAM 6.98 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria Not meeting IL_QF Kellogg Creek STREAM 6.98 Miles ALDRIN Aquatic Life Medium threshold Not meeting IL_QG Bull Creek STREAM 5.05 Miles ALDRIN Aquatic Life Medium threshold Not meeting IL_QG Bull Creek STREAM 5.05 Miles ENDRIN Aquatic Life Medium threshold Not meeting IL_QG Bull Creek STREAM 5.05 Miles DISSOLVED OXYGEN Aquatic Life Medium criteria North Point Marina GREAT LAKES BAYS Square POLYCHLORINATED Not meeting IL_QH 0.121 Fish Consumption Low Harbor AND HARBORS Miles BIPHENYLS (PCBS) threshold

North Point Marina GREAT LAKES BAYS Square Not meeting IL_QH 0.121 MERCURY Fish Consumption Low Harbor AND HARBORS Miles threshold GREAT LAKES Not meeting IL_QH-01 North Point Beach 0.42 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QH-01 North Point Beach 0.42 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold IL Beach State GREAT LAKES Not meeting IL_QH-03 2.72 Miles MERCURY Fish Consumption Low Park North SHORELINE threshold IL Beach State GREAT LAKES POLYCHLORINATED Not meeting IL_QH-03 2.72 Miles Fish Consumption Low Park North SHORELINE BIPHENYLS (PCBS) threshold Waukegan North GREAT LAKES Not meeting IL_QH-04 1.51 Miles MERCURY Fish Consumption Low Beach SHORELINE threshold Waukegan North GREAT LAKES POLYCHLORINATED Not meeting IL_QH-04 1.51 Miles Fish Consumption Low Beach SHORELINE BIPHENYLS (PCBS) threshold Waukegan South GREAT LAKES POLYCHLORINATED Not meeting IL_QH-05 1.55 Miles Fish Consumption Low Beach SHORELINE BIPHENYLS (PCBS) threshold Table 1 Waters and Impairments Approved on Illinois 95 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Waukegan South GREAT LAKES Not meeting IL_QH-05 1.55 Miles MERCURY Fish Consumption Low Beach SHORELINE threshold IL Beach State GREAT LAKES POLYCHLORINATED Not meeting IL_QH-09 4.67 Miles Fish Consumption Low Park South SHORELINE BIPHENYLS (PCBS) threshold IL Beach State GREAT LAKES Not meeting IL_QH-09 4.67 Miles MERCURY Fish Consumption Low Park South SHORELINE threshold GREAT LAKES Not meeting IL_QI-06 Lake Bluff Beach 5.5 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QI-06 Lake Bluff Beach 5.5 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QI-10 Lake Forest Beach 3.79 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QI-10 Lake Forest Beach 3.79 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QJ Rosewood Beach 2.19 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QJ Rosewood Beach 2.19 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES Not meeting IL_QJ-05 Park Ave. Beach 4.08 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QJ-05 Park Ave. Beach 4.08 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QK-04 Glencoe Beach 2.15 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QK-04 Glencoe Beach 2.15 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES Not meeting IL_QK-06 Tower Beach 1.17 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QK-06 Tower Beach 1.17 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QK-07 Lloyd Beach 0.32 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QK-07 Lloyd Beach 0.32 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES Not meeting IL_QK-08 Maple Beach 0.57 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QK-08 Maple Beach 0.57 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QK-09 Elder Beach 0.92 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QK-09 Elder Beach 0.92 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QL-03 Kenilworth Beach 0.76 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold Table 1 Waters and Impairments Approved on Illinois 96 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING GREAT LAKES Not meeting IL_QL-03 Kenilworth Beach 0.76 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES Not meeting IL_QL-06 Gilson Beach 2 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QL-06 Gilson Beach 2 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold Lake Michigan GREAT LAKES Square Not meeting IL_QLM-01 196 MERCURY Fish Consumption Low Nearshore OPEN WATER Miles threshold Lake Michigan GREAT LAKES Square POLYCHLORINATED Not meeting IL_QLM-01 196 Fish Consumption Low Nearshore OPEN WATER Miles BIPHENYLS (PCBS) threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QM-03 Greenwood Beach 0.38 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QM-03 Greenwood Beach 0.38 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES Not meeting IL_QM-04 Lee Beach 0.43 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QM-04 Lee Beach 0.43 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QM-05 Lighthouse Beach 0.64 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QM-05 Lighthouse Beach 0.64 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold Northwestern GREAT LAKES Not meeting IL_QM-06 0.73 Miles MERCURY Fish Consumption Low University Beach SHORELINE threshold Northwestern GREAT LAKES POLYCHLORINATED Not meeting IL_QM-06 0.73 Miles Fish Consumption Low University Beach SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QM-07 Clark Beach 0.94 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QM-07 Clark Beach 0.94 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold South Boulevard GREAT LAKES POLYCHLORINATED Not meeting IL_QM-08 0.98 Miles Fish Consumption Low Beach SHORELINE BIPHENYLS (PCBS) threshold South Boulevard GREAT LAKES Not meeting IL_QM-08 0.98 Miles MERCURY Fish Consumption Low Beach SHORELINE threshold Touhy (Leone) GREAT LAKES POLYCHLORINATED Not meeting IL_QN-01 0.41 Miles Fish Consumption Low Beach SHORELINE BIPHENYLS (PCBS) threshold Touhy (Leone) GREAT LAKES Not meeting IL_QN-01 0.41 Miles MERCURY Fish Consumption Low Beach SHORELINE threshold Loyola (Greenleaf) GREAT LAKES POLYCHLORINATED Not meeting IL_QN-02 0.29 Miles Fish Consumption Low Beach SHORELINE BIPHENYLS (PCBS) threshold Loyola (Greenleaf) GREAT LAKES Not meeting IL_QN-02 0.29 Miles MERCURY Fish Consumption Low Beach SHORELINE threshold Hollywood/Osterma GREAT LAKES POLYCHLORINATED Not meeting IL_QN-03 0.27 Miles Fish Consumption Low nn Beach SHORELINE BIPHENYLS (PCBS) threshold Table 1 Waters and Impairments Approved on Illinois 97 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING Hollywood/Osterma GREAT LAKES Not meeting IL_QN-03 0.27 Miles MERCURY Fish Consumption Low nn Beach SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QN-04 Foster Beach 0.65 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QN-04 Foster Beach 0.65 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QN-05 Montrose Beach 1.45 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QN-05 Montrose Beach 1.45 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES Not meeting IL_QN-06 Juneway Terrace 0.07 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QN-06 Juneway Terrace 0.07 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QN-07 Rogers Beach 0.16 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QN-07 Rogers Beach 0.16 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES Not meeting IL_QN-08 Howard Beach 0.16 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QN-08 Howard Beach 0.16 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold Jarvis Beach GREAT LAKES POLYCHLORINATED Not meeting IL_QN-09 (Marion Mahoney 0.26 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold Griffin Beach) Jarvis Beach GREAT LAKES Not meeting IL_QN-09 (Marion Mahoney 0.26 Miles MERCURY Fish Consumption Low SHORELINE threshold Griffin Beach) GREAT LAKES Not meeting IL_QN-10 Pratt Beach 0.19 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QN-10 Pratt Beach 0.19 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold North GREAT LAKES Not meeting IL_QN-11 0.16 Miles MERCURY Fish Consumption Low Shore/Columbia SHORELINE threshold North GREAT LAKES POLYCHLORINATED Not meeting IL_QN-11 0.16 Miles Fish Consumption Low Shore/Columbia SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QN-12 Albion Beach 0.53 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QN-12 Albion Beach 0.53 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QN-13 Thorndale Beach 0.69 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QN-13 Thorndale Beach 0.69 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold Table 1 Waters and Impairments Approved on Illinois 98 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING GREAT LAKES Not meeting IL_QO-01 North Ave. Beach 0.55 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QO-01 North Ave. Beach 0.55 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QO-02 Fullerton Beach 3.07 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QO-02 Fullerton Beach 3.07 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QO-03 Webster Beach 0.29 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QO-03 Webster Beach 0.29 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES Not meeting IL_QO-04 Armitage Beach 0.27 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QO-04 Armitage Beach 0.27 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QO-05 Schiller Beach 0.57 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QO-05 Schiller Beach 0.57 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QP-02 Oak St. Beach 0.64 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QP-02 Oak St. Beach 0.64 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES Not meeting IL_QP-03 Ohio St. Beach 0.93 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QP-03 Ohio St. Beach 0.93 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QQ-01 12th St. Beach 1.93 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QQ-01 12th St. Beach 1.93 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QQ-02 31st St. Beach 3.73 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QQ-02 31st St. Beach 3.73 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QR-01 49th St. Beach 1.43 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QR-01 49th St. Beach 1.43 Miles MERCURY Fish Consumption Low SHORELINE threshold Jackson Park/63rd GREAT LAKES Not meeting IL_QS-02 0.73 Miles MERCURY Fish Consumption Low Beach SHORELINE threshold Jackson Park/63rd GREAT LAKES POLYCHLORINATED Not meeting IL_QS-02 0.73 Miles Fish Consumption Low Beach SHORELINE BIPHENYLS (PCBS) threshold Table 1 Waters and Impairments Approved on Illinois 99 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING GREAT LAKES Not meeting IL_QS-03 Rainbow 3.34 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QS-03 Rainbow 3.34 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QS-04 57th St. Beach 0.33 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QS-04 57th St. Beach 0.33 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QS-05 67th St. Beach 0.71 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QS-05 67th St. Beach 0.71 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES Not meeting IL_QS-06 South Shore Beach 0.43 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QS-06 South Shore Beach 0.43 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold GREAT LAKES Not meeting IL_QT-03 Calumet Beach 1.29 Miles MERCURY Fish Consumption Low SHORELINE threshold GREAT LAKES POLYCHLORINATED Not meeting IL_QT-03 Calumet Beach 1.29 Miles Fish Consumption Low SHORELINE BIPHENYLS (PCBS) threshold JACKSON PK LAKE, Not meeting IL_QZE 33.9 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium EAST LGN FRESHWATER criteria WASHINGTON LAKE, TOTAL SUSPENDED Not meeting IL_QZF 21.7 Acres Aesthetic Quality Medium PARK LGN FRESHWATER SOLIDS (TSS) threshold WASHINGTON LAKE, Not meeting IL_QZF 21.7 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium PARK LGN FRESHWATER criteria GREAT LAKES BAYS Square Not meeting IL_QZI Diversey Harbor 0.0456 MERCURY Fish Consumption Low AND HARBORS Miles threshold

GREAT LAKES BAYS Square POLYCHLORINATED Not meeting IL_QZI Diversey Harbor 0.0456 Fish Consumption Low AND HARBORS Miles BIPHENYLS (PCBS) threshold LINCOLN PK LAKE, Not meeting IL_QZK 9.3 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium NORTH PND FRESHWATER threshold LINCOLN PK LAKE, TOTAL SUSPENDED Not meeting IL_QZK 9.3 Acres Aesthetic Quality Medium NORTH PND FRESHWATER SOLIDS (TSS) threshold JACKSON HARBOR (inner GREAT LAKES BAYS Square Not meeting IL_QZM 0.06 MERCURY Fish Consumption Medium harbor, and outer AND HARBORS Miles threshold harbor) JACKSON HARBOR (inner GREAT LAKES BAYS Square POLYCHLORINATED Not meeting IL_QZM 0.06 Fish Consumption Medium harbor, and outer AND HARBORS Miles BIPHENYLS (PCBS) threshold harbor) Table 1 Waters and Impairments Approved on Illinois 100 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING GREAT LAKES BAYS Square Not meeting IL_QZO Waukegan Harbor 0.0578 MERCURY Aquatic Life Medium AND HARBORS Miles threshold

GREAT LAKES BAYS Square Not meeting IL_QZO Waukegan Harbor 0.0578 CHROMIUM, TOTAL Aquatic Life Medium AND HARBORS Miles threshold

GREAT LAKES BAYS Square Not meeting IL_QZO Waukegan Harbor 0.0578 PHOSPHORUS, TOTAL Aquatic Life Medium AND HARBORS Miles threshold

GREAT LAKES BAYS Square Not meeting IL_QZO Waukegan Harbor 0.0578 ZINC Aquatic Life Medium AND HARBORS Miles threshold

GREAT LAKES BAYS Square Not meeting IL_QZO Waukegan Harbor 0.0578 ARSENIC Aquatic Life Medium AND HARBORS Miles threshold

GREAT LAKES BAYS Square POLYCHLORINATED Not meeting IL_QZO Waukegan Harbor 0.0578 Fish Consumption Medium AND HARBORS Miles BIPHENYLS (PCBS) threshold

GREAT LAKES BAYS Square Not meeting IL_QZO Waukegan Harbor 0.0578 MERCURY Fish Consumption Medium AND HARBORS Miles threshold

GREAT LAKES BAYS Square POLYCHLORINATED Not meeting IL_QZO Waukegan Harbor 0.0578 Aquatic Life Medium AND HARBORS Miles BIPHENYLS (PCBS) threshold

GREAT LAKES BAYS Square Not meeting IL_QZO Waukegan Harbor 0.0578 BOTTOM DEPOSITS Aesthetic Quality Medium AND HARBORS Miles criteria

GREAT LAKES BAYS Square Not meeting IL_QZO Waukegan Harbor 0.0578 LEAD Aquatic Life Medium AND HARBORS Miles threshold

GREAT LAKES BAYS Square Not meeting IL_QZO Waukegan Harbor 0.0578 COPPER Aquatic Life Medium AND HARBORS Miles threshold

GREAT LAKES BAYS Square Not meeting IL_QZO Waukegan Harbor 0.0578 CADMIUM Aquatic Life Medium AND HARBORS Miles threshold LAKE, Not meeting IL_QZV SAND POND 20 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RAA DOLAN 71.3 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RAA DOLAN 71.3 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_RAB MERMET 452 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria Table 1 Waters and Impairments Approved on Illinois 101 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, Not meeting IL_RAF GLEN O. JONES 105 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_RAF GLEN O. JONES 105 Acres MERCURY Fish Consumption Medium FRESHWATER threshold HARRISBURG LAKE, TOTAL SUSPENDED Not meeting IL_RAI 208.9 Acres Aesthetic Quality Medium RESV. FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RAJ SAHARA 209 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, POLYCHLORINATED Not meeting IL_RAL LAKE OF EGYPT 2300 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_RAL LAKE OF EGYPT 2300 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RAR NORRIS CITY RES 28 Acres PH Aquatic Life Medium FRESHWATER threshold LAKE, Not meeting IL_RAR NORRIS CITY RES 28 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_RAR NORRIS CITY RES 28 Acres PHOSPHORUS, TOTAL Aquatic Life Medium FRESHWATER threshold LAKE, Not meeting IL_RAR NORRIS CITY RES 28 Acres DISSOLVED OXYGEN Aquatic Life Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RAR NORRIS CITY RES 28 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RAS OMAHA 22 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RAS OMAHA 22 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold Public and Food VIENNA CORR. LAKE, Not meeting IL_RAT 70 Acres MANGANESE Processing Water Low CNTR FRESHWATER threshold Supplies McLEANSBORO LAKE, Not meeting IL_RAZA 75 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium NEW FRESHWATER criteria LAKE, Not meeting IL_RAZI BLOOMFIELD 52 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold SUGAR CREEK LAKE, TOTAL SUSPENDED Not meeting IL_RAZO 94 Acres Aesthetic Quality Medium LAKE FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RBA SAM PARR 180 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RBA SAM PARR 180 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RBA SAM PARR 180 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria RED HILLS ST LAKE, Not meeting IL_RBB 40 Acres MERCURY Fish Consumption Medium PARK FRESHWATER threshold Table 1 Waters and Impairments Approved on Illinois 102 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, Not meeting IL_RBD VERMILION 878 Acres DISSOLVED OXYGEN Aquatic Life Medium FRESHWATER criteria LAKE, Not meeting IL_RBD VERMILION 878 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RBF SAM DALE 194 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RBG LINCOLN TRAIL 145 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RBK WALNUT POINT 58.7 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RBL PARIS TWIN EAST 162.8 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RBL PARIS TWIN EAST 162.8 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_RBN MINGO 170 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RBN MINGO 170 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RBN MINGO 170 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RBO HOMER 102 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RBS GEORGETOWN 46.1 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RBS GEORGETOWN 46.1 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold CRYSTAL LAKE, Not meeting IL_RBU 7 Acres MERCURY Fish Consumption Medium (CHAMPAIGN) FRESHWATER threshold MILL CREEK LAKE, Not meeting IL_RBW 811 Acres CAUSE UNKNOWN Aesthetic Quality Medium POND FRESHWATER threshold MILL CREEK LAKE, Not meeting IL_RBW 811 Acres MERCURY Fish Consumption Medium POND FRESHWATER threshold PARIS TWIN LAKE, Not meeting IL_RBX 56.7 Acres MERCURY Fish Consumption Medium WEST FRESHWATER threshold PARIS TWIN LAKE, Not meeting IL_RBX 56.7 Acres CAUSE UNKNOWN Aesthetic Quality Medium WEST FRESHWATER threshold LAKE, Not meeting IL_RBZH BEALL WOODS 14 Acres MERCURY Fish Consumption Medium FRESHWATER threshold WEST SALEM LAKE, Not meeting IL_RBZN 2 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low OLD FRESHWATER threshold LAKE, Not meeting IL_RCA VERNOR 36 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_RCA VERNOR 36 Acres MERCURY Fish Consumption Medium FRESHWATER threshold Table 1 Waters and Impairments Approved on Illinois 103 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING BORAH (OLNEY LAKE, Not meeting IL_RCB 137 Acres MERCURY Fish Consumption Medium NEW) FRESHWATER threshold OLNEY EAST LAKE, Not meeting IL_RCC 935 Acres MERCURY Fish Consumption Medium FORK FRESHWATER threshold STEPHEN A. LAKE, Not meeting IL_RCD 525 Acres MERCURY Fish Consumption Medium FORBES FRESHWATER threshold LAKE, Not meeting IL_RCE SARA 765 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RCF MATTOON 1010 Acres MERCURY Fish Consumption Medium FRESHWATER threshold PARADISE LAKE, Not meeting IL_RCG 176 Acres TURBIDITY Aquatic Life Medium (COLES) FRESHWATER threshold PARADISE LAKE, Not meeting IL_RCG 176 Acres DISSOLVED OXYGEN Aquatic Life Medium (COLES) FRESHWATER criteria PARADISE LAKE, TOTAL SUSPENDED Not meeting IL_RCG 176 Acres Aquatic Life Medium (COLES) FRESHWATER SOLIDS (TSS) threshold PARADISE LAKE, TOTAL SUSPENDED Not meeting IL_RCG 176 Acres Aesthetic Quality Medium (COLES) FRESHWATER SOLIDS (TSS) threshold PARADISE LAKE, Not meeting IL_RCG 176 Acres MERCURY Fish Consumption Medium (COLES) FRESHWATER threshold LAKE, Not meeting IL_RCJ ALTAMONT NEW 57 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RCR NEWTON 1750 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RCR NEWTON 1750 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RCT WAYNE CITY SCR 8 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_RCU Clay City SCR 6 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RCU Clay City SCR 6 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold Public and Food LAKE, Not meeting IL_RCZJ FAIRFIELD 22 Acres SIMAZINE Processing Water High FRESHWATER threshold Supplies Public and Food LAKE, Not meeting IL_RCZJ FAIRFIELD 22 Acres ATRAZINE Processing Water High FRESHWATER threshold Supplies LAKE, Not meeting IL_RCZJ FAIRFIELD 22 Acres PHOSPHORUS, TOTAL Aesthetic Quality High FRESHWATER criteria Public and Food LAKE, TOTAL DISSOLVED Not meeting IL_RCZJ FAIRFIELD 22 Acres Processing Water High FRESHWATER SOLIDS (TDS) criteria Supplies Table 1 Waters and Impairments Approved on Illinois 104 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, TOTAL SUSPENDED Not meeting IL_RCZJ FAIRFIELD 22 Acres Aesthetic Quality High FRESHWATER SOLIDS (TSS) threshold ANDERSON & LAKE, Not meeting IL_RDA 1360 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium CARLTON FRESHWATER criteria ANDERSON & LAKE, TOTAL SUSPENDED Not meeting IL_RDA 1360 Acres Aesthetic Quality Medium CARLTON FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RDB SILOAM SPRINGS 58 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_RDB SILOAM SPRINGS 58 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RDC RICE (KNOX) 54 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RDD CANTON 250 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RDD CANTON 250 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RDE ARGYLE 95.1 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RDF OTTER 765 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RDG CARLINVILLE 168 Acres MERCURY Fish Consumption High FRESHWATER threshold LAKE, Not meeting IL_RDH BEAVER DAM 56.5 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_RDH BEAVER DAM 56.5 Acres MERCURY Fish Consumption High FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RDI JACKSONVILLE 476.5 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RDI JACKSONVILLE 476.5 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RDI JACKSONVILLE 476.5 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_RDM VERMONT CITY 38.5 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RDM VERMONT CITY 38.5 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold Public and Food LAKE, Not meeting IL_RDM VERMONT CITY 38.5 Acres ATRAZINE Processing Water Low FRESHWATER criteria Supplies LAKE, Not meeting IL_RDN MT. STERLING 26.1 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RDO BLOOMINGTON 635 Acres MERCURY Fish Consumption Medium FRESHWATER threshold Table 1 Waters and Impairments Approved on Illinois 105 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, Not meeting IL_RDP PITTSFIELD 241 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RDP PITTSFIELD 241 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RDP PITTSFIELD 241 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RDQ SPRING SOUTH 610 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RDQ SPRING SOUTH 610 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RDQ SPRING SOUTH 610 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold SPRING LAKE, Not meeting IL_RDR 240.5 Acres DISSOLVED OXYGEN Aquatic Life Medium (McDONOUGH) FRESHWATER criteria LAKE, Not meeting IL_RDU DEPUE 524 Acres ZINC Aquatic Life Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RDU DEPUE 524 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RDU DEPUE 524 Acres CADMIUM Aquatic Life Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RDU DEPUE 524 Acres Aquatic Life Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RDU DEPUE 524 Acres SILVER Aquatic Life Medium FRESHWATER threshold LAKE, SEDIMENTATION/SILTATIO Not meeting IL_RDU DEPUE 524 Acres Aquatic Life Low FRESHWATER N threshold LAKE, POLYCHLORINATED Not meeting IL_RDU DEPUE 524 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_RDU DEPUE 524 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RDU DEPUE 524 Acres ENDRIN Aquatic Life Medium FRESHWATER threshold LAKE, Not meeting IL_RDZE LA HARPE 9.2 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_RDZF GREENFIELD 58.8 Acres PHOSPHORUS, TOTAL Aesthetic Quality High FRESHWATER criteria Public and Food LAKE, Not meeting IL_RDZF GREENFIELD 58.8 Acres SIMAZINE Processing Water High FRESHWATER threshold Supplies PALMYRA- LAKE, DEBRIS/FLOATABLES/TRA Not meeting IL_RDZP 35 Acres Aesthetic Quality Medium MODESTO FRESHWATER SH criteria PALMYRA- LAKE, Not meeting IL_RDZP 35 Acres TURBIDITY Aesthetic Quality Medium MODESTO FRESHWATER criteria Table 1 Waters and Impairments Approved on Illinois 106 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, Not meeting IL_RDZV MATANZAS 360.9 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RDZV MATANZAS 360.9 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RDZX SENACHWINE 3324 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, SEDIMENTATION/SILTATIO Not meeting IL_RDZX SENACHWINE 3324 Acres Aquatic Life Low FRESHWATER N threshold LAKE, Not meeting IL_RDZX SENACHWINE 3324 Acres SILVER Aquatic Life Medium FRESHWATER threshold LAKE, Not meeting IL_RDZX SENACHWINE 3324 Acres ALDRIN Aquatic Life Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RDZX SENACHWINE 3324 Acres Aquatic Life Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_REA DECATUR 3072 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, POLYCHLORINATED Not meeting IL_REA DECATUR 3072 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_REA DECATUR 3072 Acres CHLORDANE Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_REB SANGCHRIS 2165 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_REB SANGCHRIS 2165 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_REB SANGCHRIS 2165 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_REC TAYLORVILLE 1148 Acres PH Aquatic Life Medium FRESHWATER criteria LAKE, Not meeting IL_REC TAYLORVILLE 1148 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_REC TAYLORVILLE 1148 Acres CHLORDANE Fish Consumption Medium FRESHWATER threshold WELDON LAKE, TOTAL SUSPENDED Not meeting IL_RED 29.4 Acres Aesthetic Quality Medium SPRINGS FRESHWATER SOLIDS (TSS) threshold WELDON LAKE, Not meeting IL_RED 29.4 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium SPRINGS FRESHWATER criteria WELDON LAKE, Not meeting IL_RED 29.4 Acres MERCURY Fish Consumption Medium SPRINGS FRESHWATER threshold LAKE, Not meeting IL_REE DAWSON 150 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_REF SPRINGFIELD 4000 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_REF SPRINGFIELD 4000 Acres DISSOLVED OXYGEN Aquatic Life Medium FRESHWATER criteria Table 1 Waters and Impairments Approved on Illinois 107 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE OF THE LAKE, Not meeting IL_REG 23.2 Acres MERCURY Fish Consumption Medium WOODS FRESHWATER threshold LAKE OF THE LAKE, Not meeting IL_REG 23.2 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium WOODS FRESHWATER threshold LAKE OF THE LAKE, POLYCHLORINATED Not meeting IL_REG 23.2 Acres Fish Consumption Medium WOODS FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_REI CLINTON 4895 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_REI CLINTON 4895 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_REZQ GRIDLEY (SITE M) 25 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_RFH MONEE RESV. 46 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RFH MONEE RESV. 46 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RGB DIAMOND 154 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RGC LINDEN 31 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_RGD SILVER (DuPAGE) 56.9 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_RGF OPEKA 40.5 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold CHURCHILL LAKE, Not meeting IL_RGG 21 Acres PHOSPHORUS, TOTAL Aquatic Life Low LAGOON FRESHWATER criteria CHURCHILL LAKE, TOTAL SUSPENDED Not meeting IL_RGG 21 Acres Aesthetic Quality Low LAGOON FRESHWATER SOLIDS (TSS) criteria CHURCHILL LAKE, Not meeting IL_RGG 21 Acres ALDRIN Aquatic Life Medium LAGOON FRESHWATER criteria CHURCHILL LAKE, Not meeting IL_RGG 21 Acres SILVER Aquatic Life Medium LAGOON FRESHWATER criteria CHURCHILL LAKE, Not meeting IL_RGG 21 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low LAGOON FRESHWATER criteria CHURCHILL LAKE, TOTAL SUSPENDED Not meeting IL_RGG 21 Acres Aquatic Life Low LAGOON FRESHWATER SOLIDS (TSS) criteria LAKE, TOTAL SUSPENDED Not meeting IL_RGI GAGES 139 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RGI GAGES 139 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_RGI GAGES 139 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RGJ BUTLER 55 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria Table 1 Waters and Impairments Approved on Illinois 108 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, TOTAL SUSPENDED Not meeting IL_RGJ BUTLER 55 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RGK GRAYS 80 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_RGM SAND 100.2 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria COUNTRYSIDE LAKE, TOTAL SUSPENDED Not meeting IL_RGQ 142 Acres Aesthetic Quality Medium LAKE FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RGT LIBERTY 31 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RGT LIBERTY 31 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Primary Contact Not meeting IL_RGU LOCH LOMOND 75 Acres FECAL COLIFORM Medium FRESHWATER Recreation criteria LAKE, Not meeting IL_RGU LOCH LOMOND 75 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RGU LOCH LOMOND 75 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Primary Contact Not meeting IL_RGV DRUCE 87 Acres FECAL COLIFORM Medium FRESHWATER Recreation criteria LAKE, Not meeting IL_RGW THIRD 162 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RGW THIRD 162 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RGZA CROOKED 140 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RGZA CROOKED 140 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Primary Contact Not meeting IL_RGZB HASTINGS 76 Acres FECAL COLIFORM Medium FRESHWATER Recreation criteria LAKE, Not meeting IL_RGZB HASTINGS 76 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RGZB HASTINGS 76 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RGZC FOURTH LAKE 306 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_RGZD MILTMORE 83.1 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RGZE SLOUGH 38 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RGZE SLOUGH 38 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_RGZE SLOUGH 38 Acres PHOSPHORUS, TOTAL Aquatic Life Medium FRESHWATER criteria Table 1 Waters and Impairments Approved on Illinois 109 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, TOTAL SUSPENDED Not meeting IL_RGZE SLOUGH 38 Acres Aquatic Life Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RGZE SLOUGH 38 Acres DISSOLVED OXYGEN Aquatic Life Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RGZF SYLVAN 32 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RGZG FOREST 40 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RGZJ LAKE CHARLES 39 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RGZK POTOMAC LAKE 12 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_RGZM VALLEY 12 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RGZM VALLEY 12 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RGZO TAMPIER LAKE 161.6 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RGZT SPRING (LAKE) 42.92 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RGZT SPRING (LAKE) 42.92 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, POLYCHLORINATED Not meeting IL_RGZX BUSSE WOODS 590 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_RGZX BUSSE WOODS 590 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_RGZX BUSSE WOODS 590 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RGZX BUSSE WOODS 590 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RGZZ SEDGEWICK 75 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RGZZ SEDGEWICK 75 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RGZZ SEDGEWICK 75 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, POLYCHLORINATED Not meeting IL_RHA WOLF 419 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_RHA WOLF 419 Acres MERCURY Fish Consumption Medium FRESHWATER threshold HUMBOLDT PARK LAKE, Not meeting IL_RHB 19.9 Acres MERCURY Fish Consumption Medium LAGOON FRESHWATER threshold HUMBOLDT PARK LAKE, Not meeting IL_RHB 19.9 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium LAGOON FRESHWATER threshold Table 1 Waters and Impairments Approved on Illinois 110 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING HUMBOLDT PARK LAKE, TOTAL SUSPENDED Not meeting IL_RHB 19.9 Acres Aesthetic Quality Medium LAGOON FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RHD MAPLE 60.1 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria MARQUETTE LAKE, Not meeting IL_RHE 40 Acres MERCURY Fish Consumption Medium PARK LAG. FRESHWATER threshold MARQUETTE LAKE, Not meeting IL_RHE 40 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium PARK LAG. FRESHWATER criteria LAKE, POLYCHLORINATED Not meeting IL_RHG POWDERHORN 35 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_RHG POWDERHORN 35 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RHH SAGANASHKEE 325.4 Acres Aquatic Life Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RHH SAGANASHKEE 325.4 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, POLYCHLORINATED Not meeting IL_RHH SAGANASHKEE 325.4 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_RHH SAGANASHKEE 325.4 Acres SILVER Aquatic Life Medium FRESHWATER threshold LAKE, SEDIMENTATION/SILTATIO Not meeting IL_RHH SAGANASHKEE 325.4 Acres Aquatic Life Medium FRESHWATER N threshold LAKE, Not meeting IL_RHH SAGANASHKEE 325.4 Acres NICKEL Aquatic Life Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RHI SAUK TRAIL 28.8 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RHI SAUK TRAIL 28.8 Acres Aquatic Life Low FRESHWATER SOLIDS (TSS) threshold LAKE, SEDIMENTATION/SILTATIO Not meeting IL_RHI SAUK TRAIL 28.8 Acres Aquatic Life Low FRESHWATER N threshold LAKE, POLYCHLORINATED Not meeting IL_RHI SAUK TRAIL 28.8 Acres Aquatic Life Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_RHI SAUK TRAIL 28.8 Acres PHOSPHORUS, TOTAL Aquatic Life Low FRESHWATER criteria LAKE, Not meeting IL_RHI SAUK TRAIL 28.8 Acres DISSOLVED OXYGEN Aquatic Life Low FRESHWATER criteria LAKE, Not meeting IL_RHI SAUK TRAIL 28.8 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria SKOKIE LAKE, TOTAL SUSPENDED Not meeting IL_RHJ 225 Acres Aesthetic Quality Low LAGOONS FRESHWATER SOLIDS (TSS) threshold SKOKIE LAKE, Not meeting IL_RHJ 225 Acres MERCURY Fish Consumption Medium LAGOONS FRESHWATER threshold SKOKIE LAKE, Not meeting IL_RHJ 225 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low LAGOONS FRESHWATER criteria Table 1 Waters and Impairments Approved on Illinois 111 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING CHICAGO LAKE, Not meeting IL_RHJA BOTANIC 60.6 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria GARDEN LAKE, Not meeting IL_RHK ELEANOR 11 Acres PHOSPHORUS, TOTAL Aquatic Life Medium FRESHWATER threshold LAKE, Not meeting IL_RHK ELEANOR 11 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RHK ELEANOR 11 Acres Aquatic Life Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RHK ELEANOR 11 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RHO CALUMET 1600 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, POLYCHLORINATED Not meeting IL_RHO CALUMET 1600 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_RHR GEORGE (COOK) 8 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_RHS TURTLEHEAD 12 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria COLUMBUS PARK LAKE, Not meeting IL_RHT 5.8 Acres CAUSE UNKNOWN Aesthetic Quality Medium LAG. FRESHWATER threshold SHERMAN PARK LAKE, Not meeting IL_RHU 14 Acres CAUSE UNKNOWN Aesthetic Quality Medium LAGOONS FRESHWATER threshold SHERMAN PARK LAKE, Not meeting IL_RHU 14 Acres MERCURY Fish Consumption Medium LAGOONS FRESHWATER threshold GARFIELD PK. LAKE, TOTAL SUSPENDED Not meeting IL_RHW 13.7 Acres Aesthetic Quality Medium LAGOON FRESHWATER SOLIDS (TSS) threshold GARFIELD PK. LAKE, Not meeting IL_RHW 13.7 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium LAGOON FRESHWATER threshold DOUGLAS PARK LAKE, Not meeting IL_RHX 6.6 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium LAGOON FRESHWATER threshold DOUGLAS PARK LAKE, TOTAL SUSPENDED Not meeting IL_RHX 6.6 Acres Aesthetic Quality Medium LAGOON FRESHWATER SOLIDS (TSS) threshold MC KINLEY PK. LAKE, POLYCHLORINATED Not meeting IL_RHY 7 Acres Fish Consumption Medium LAGOON FRESHWATER BIPHENYLS (PCBS) threshold MC KINLEY PK. LAKE, Not meeting IL_RHY 7 Acres MERCURY Fish Consumption Medium LAGOON FRESHWATER threshold GOMPERS PARK LAKE, Not meeting IL_RHZA 1 Acres CAUSE UNKNOWN Aesthetic Quality Medium LAGOON FRESHWATER threshold ARROWHEAD LAKE, Not meeting IL_RHZE 14 Acres MERCURY Fish Consumption Medium (COOK) FRESHWATER threshold ARROWHEAD LAKE, Not meeting IL_RHZE 14 Acres CAUSE UNKNOWN Aesthetic Quality Medium (COOK) FRESHWATER threshold Table 1 Waters and Impairments Approved on Illinois 112 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, TOTAL SUSPENDED Not meeting IL_RHZF BULLFROG 16 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RHZF BULLFROG 16 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold MIDLOTHIAN LAKE, Not meeting IL_RHZI 25 Acres MERCURY Fish Consumption Medium RESERVOIR FRESHWATER threshold MIDLOTHIAN LAKE, POLYCHLORINATED Not meeting IL_RHZI 25 Acres Fish Consumption Medium RESERVOIR FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_RHZJ FLATFOOT LAKE 15 Acres MERCURY Fish Consumption Medium FRESHWATER threshold HORSESHOE LAKE, TOTAL SUSPENDED Not meeting IL_RIA 1890 Acres Aesthetic Quality Medium (ALEXANDER) FRESHWATER SOLIDS (TSS) threshold HORSESHOE LAKE, Not meeting IL_RIA 1890 Acres PH Aquatic Life Medium (ALEXANDER) FRESHWATER threshold HORSESHOE LAKE, Not meeting IL_RIA 1890 Acres DISSOLVED OXYGEN Aquatic Life Medium (ALEXANDER) FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RIB RANDOLPH 65 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold ANNA STATE LAKE, Not meeting IL_RIC 24.5 Acres MERCURY Fish Consumption Medium HOSPITAL FRESHWATER threshold DONGOLA CITY LAKE, TOTAL SUSPENDED Not meeting IL_RIE 70 Acres Aesthetic Quality Medium RES FRESHWATER SOLIDS (TSS) threshold DONGOLA CITY LAKE, Not meeting IL_RIE 70 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium RES FRESHWATER criteria LAKE, Not meeting IL_RII SPARTA NEW 25.8 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RIJ SPARTA OLD 26.3 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RIJ SPARTA OLD 26.3 Acres DISSOLVED OXYGEN Aquatic Life Medium FRESHWATER threshold LAKE, Not meeting IL_RJA STAUNTON 140 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RJA STAUNTON 140 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold HORSESHOE LAKE, POLYCHLORINATED Not meeting IL_RJC 2107 Acres Fish Consumption Medium (MADISON) FRESHWATER BIPHENYLS (PCBS) threshold HORSESHOE LAKE, Not meeting IL_RJC 2107 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low (MADISON) FRESHWATER threshold HORSESHOE LAKE, TOTAL SUSPENDED Not meeting IL_RJC 2107 Acres Aesthetic Quality Low (MADISON) FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RJF MT. OLIVE NEW 47.8 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RJG MT. OLIVE OLD 32.5 Acres MERCURY Fish Consumption Medium FRESHWATER threshold Table 1 Waters and Impairments Approved on Illinois 113 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, POLYCHLORINATED Not meeting IL_RJK FRANK HOLTEN 1 97 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, POLYCHLORINATED Not meeting IL_RJL FRANK HOLTEN 2 40 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, POLYCHLORINATED Not meeting IL_RJM FRANK HOLTEN 3 80 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold HOLIDAY LAKE, TOTAL SUSPENDED Not meeting IL_RJN 430 Acres Aesthetic Quality Medium SHORES FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RLB STOREY 132 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RLB STOREY 132 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RLB STOREY 132 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RLD GLADSTONE 27 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RLE CARTHAGE 36.1 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RLE CARTHAGE 36.1 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RLE CARTHAGE 36.1 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RMA FRENTRESS 92 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RMA FRENTRESS 92 Acres Aquatic Life Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RMJ APPLE CANYON 450 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria GEORGE (ROCK LAKE, Not meeting IL_RML 167 Acres MERCURY Fish Consumption Medium ISLAND) FRESHWATER threshold GEORGE (ROCK LAKE, TOTAL SUSPENDED Not meeting IL_RML 167 Acres Aesthetic Quality Medium ISLAND) FRESHWATER SOLIDS (TSS) threshold GEORGE (ROCK LAKE, Not meeting IL_RML 167 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium ISLAND) FRESHWATER criteria LAKE, Not meeting IL_RNA CRAB ORCHARD 6965 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, POLYCHLORINATED Not meeting IL_RNA CRAB ORCHARD 6965 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RNA CRAB ORCHARD 6965 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RNB REND 18900 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RNB REND 18900 Acres MERCURY Fish Consumption Medium FRESHWATER threshold Table 1 Waters and Impairments Approved on Illinois 114 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, Not meeting IL_RNC KINKAID 3475 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RND MURPHYSBORO 143 Acres MERCURY Fish Consumption Medium FRESHWATER threshold CEDAR LAKE, Not meeting IL_RNE 1800 Acres MERCURY Fish Consumption Medium (JACKSON) FRESHWATER threshold LAKE, Not meeting IL_RNG DUQUOIN 244 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RNG DUQUOIN 244 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RNG DUQUOIN 244 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RNH PINCKNEYVILLE 192 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RNH PINCKNEYVILLE 192 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria CARBONDALE LAKE, TOTAL SUSPENDED Not meeting IL_RNI 135.6 Acres Aesthetic Quality Medium CITY LAKE FRESHWATER SOLIDS (TSS) threshold CARBONDALE LAKE, Not meeting IL_RNI 135.6 Acres MERCURY Fish Consumption Medium CITY LAKE FRESHWATER threshold LAKE, Not meeting IL_RNJ DEVILS KITCHEN 810 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RNK LITTLE GRASSY 1000 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, POLYCHLORINATED Not meeting IL_RNL MARION 220 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_RNL MARION 220 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RNL MARION 220 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold WASHINGTON LAKE, Not meeting IL_RNM 248 Acres MERCURY Fish Consumption Medium CO. FRESHWATER threshold LAKE, Not meeting IL_RNN MOSES 169.6 Acres MERCURY Fish Consumption Medium FRESHWATER threshold WEST LAKE, Not meeting IL_RNP 146 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRANKFORT OLD FRESHWATER criteria

WEST LAKE, TOTAL SUSPENDED Not meeting IL_RNP 146 Acres Aesthetic Quality Medium FRANKFORT OLD FRESHWATER SOLIDS (TSS) threshold

WEST LAKE, Not meeting IL_RNP 146 Acres MERCURY Fish Consumption Medium FRANKFORT OLD FRESHWATER threshold Table 1 Waters and Impairments Approved on Illinois 115 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING WEST LAKE, Not meeting IL_RNQ 214 Acres MERCURY Fish Consumption Medium FRANKFORT NEW FRESHWATER threshold

WEST LAKE, TOTAL SUSPENDED Not meeting IL_RNQ 214 Acres Aesthetic Quality Medium FRANKFORT NEW FRESHWATER SOLIDS (TSS) threshold

WEST LAKE, Not meeting IL_RNQ 214 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRANKFORT NEW FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RNT ELKVILLE 58.5 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RNT ELKVILLE 58.5 Acres Aquatic Life Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RNT ELKVILLE 58.5 Acres PHOSPHORUS, TOTAL Aquatic Life Medium FRESHWATER threshold LAKE, Not meeting IL_RNT ELKVILLE 58.5 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_RNT ELKVILLE 58.5 Acres PH Aquatic Life Medium FRESHWATER threshold LAKE, Not meeting IL_RNT ELKVILLE 58.5 Acres DISSOLVED OXYGEN Aquatic Life Medium FRESHWATER threshold LAKE, Not meeting IL_RNX SESSER 42.5 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_RNX SESSER 42.5 Acres DISSOLVED OXYGEN Aquatic Life Medium FRESHWATER threshold LAKE, Not meeting IL_RNX SESSER 42.5 Acres PH Aquatic Life Medium FRESHWATER threshold LAKE, Not meeting IL_RNX SESSER 42.5 Acres PHOSPHORUS, TOTAL Aquatic Life Medium FRESHWATER threshold LAKE, Not meeting IL_RNZA WESSLYN CUT 24.2 Acres MERCURY Fish Consumption Medium FRESHWATER threshold ASHLEY LAKE, Not meeting IL_RNZB 20 Acres DISSOLVED OXYGEN Aquatic Life Low RESERVOIR FRESHWATER criteria ASHLEY LAKE, TOTAL SUSPENDED Not meeting IL_RNZB 20 Acres Aquatic Life Medium RESERVOIR FRESHWATER SOLIDS (TSS) threshold ASHLEY LAKE, TOTAL SUSPENDED Not meeting IL_RNZB 20 Acres Aesthetic Quality Medium RESERVOIR FRESHWATER SOLIDS (TSS) threshold ASHLEY LAKE, SEDIMENTATION/SILTATIO Not meeting IL_RNZB 20 Acres Aquatic Life Medium RESERVOIR FRESHWATER N threshold LAKE, Not meeting IL_RNZD HERRIN OLD 51.3 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, POLYCHLORINATED Not meeting IL_RNZD HERRIN OLD 51.3 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold Table 1 Waters and Impairments Approved on Illinois 116 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, TOTAL SUSPENDED Not meeting IL_RNZD HERRIN OLD 51.3 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RNZD HERRIN OLD 51.3 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER threshold LAKE, Not meeting IL_RNZE JOHNSTON CITY 64 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RNZE JOHNSTON CITY 64 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RNZF BOULDER NORTH 17 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, POLYCHLORINATED Not meeting IL_RNZH CAMPUS 40 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_RNZH CAMPUS 40 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RNZH CAMPUS 40 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RNZK BOULDER SOUTH 22.5 Acres MERCURY Fish Consumption Medium FRESHWATER threshold CRYSTAL LAKE, Not meeting IL_RNZL 6 Acres MERCURY Fish Consumption Medium (PERRY) FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RNZM LITTLE CEDAR 70 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold CHRISTOPHER LAKE, Not meeting IL_RNZQ 20 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium OLD RESERVOIR FRESHWATER threshold ARROWHEAD LAKE, Not meeting IL_RNZX 30 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low (WILLIAMSON) FRESHWATER criteria LAKE, Not meeting IL_ROA CARLYLE 24580 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_ROA CARLYLE 24580 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_ROA CARLYLE 24580 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_ROC SHELBYVILLE 11000 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_ROC SHELBYVILLE 11000 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_ROC SHELBYVILLE 11000 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_ROD VANDALIA 660 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_ROD VANDALIA 660 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_ROE RAMSEY 46.6 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold Table 1 Waters and Impairments Approved on Illinois 117 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, Not meeting IL_ROE RAMSEY 46.6 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_ROF PANA 219.5 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_ROG COFFEEN 1038 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, POLYCHLORINATED Not meeting IL_ROI CENTRALIA 450 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_ROI CENTRALIA 450 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_ROI CENTRALIA 450 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_ROK RACCOON 925 Acres TERBUFOS Aquatic Life Medium FRESHWATER criteria LAKE, POLYCHLORINATED Not meeting IL_ROK RACCOON 925 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_ROK RACCOON 925 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_ROK RACCOON 925 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_ROK RACCOON 925 Acres DISSOLVED OXYGEN Aquatic Life Medium FRESHWATER criteria LAKE, Not meeting IL_ROK RACCOON 925 Acres PH Aquatic Life Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_ROL GLENN SHOALS 1350 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_ROL GLENN SHOALS 1350 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_ROL GLENN SHOALS 1350 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_RON LOU YAEGER 1268.5 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RON LOU YAEGER 1268.5 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RON LOU YAEGER 1268.5 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_ROO NASHVILLE CITY 42 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_ROO NASHVILLE CITY 42 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold GOV BOND LAKE, Not meeting IL_ROP 775 Acres MERCURY Fish Consumption Medium (GREENVILLE) FRESHWATER threshold LAKE, Not meeting IL_ROR SALEM 74.2 Acres MERCURY Fish Consumption Medium FRESHWATER threshold Table 1 Waters and Impairments Approved on Illinois 118 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, TOTAL SUSPENDED Not meeting IL_ROR SALEM 74.2 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_ROR SALEM 74.2 Acres DISSOLVED OXYGEN Aquatic Life Low FRESHWATER threshold LAKE, Not meeting IL_ROR SALEM 74.2 Acres PH Aquatic Life Low FRESHWATER threshold LAKE, Not meeting IL_ROT HILLSBORO OLD 108.7 Acres PHOSPHORUS, TOTAL Aesthetic Quality High FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_ROT HILLSBORO OLD 108.7 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_ROV COULTERVILLE 38 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold GREENVILLE OLD LAKE, Not meeting IL_ROY 25.1 Acres MERCURY Fish Consumption Medium (Patriot's Park) FRESHWATER threshold HIGHLAND LAKE, TOTAL SUSPENDED Not meeting IL_ROZA 600 Acres Aesthetic Quality Medium SILVER FRESHWATER SOLIDS (TSS) threshold HIGHLAND LAKE, Not meeting IL_ROZA 600 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium SILVER FRESHWATER threshold HIGHLAND LAKE, Not meeting IL_ROZA 600 Acres MERCURY Fish Consumption Medium SILVER FRESHWATER threshold HIGHLAND LAKE, Not meeting IL_ROZA 600 Acres CHLORDANE Fish Consumption Medium SILVER FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_ROZH SORENTO 11 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_ROZH SORENTO 11 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_ROZY KINMUNDY OLD 20 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_ROZY KINMUNDY OLD 20 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RPA LE-AQUA-NA 39.5 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RPA LE-AQUA-NA 39.5 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RPC PIERCE 162.2 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RPC PIERCE 162.2 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria JOHNSON SAUK LAKE, TOTAL SUSPENDED Not meeting IL_RPD 58 Acres Aesthetic Quality Medium TRAIL FRESHWATER SOLIDS (TSS) threshold JOHNSON SAUK LAKE, Not meeting IL_RPD 58 Acres MERCURY Fish Consumption Medium TRAIL FRESHWATER threshold Table 1 Waters and Impairments Approved on Illinois 119 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING JOHNSON SAUK LAKE, Not meeting IL_RPD 58 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium TRAIL FRESHWATER criteria LAKE, Not meeting IL_RPF CARLTON 75.4 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RPF CARLTON 75.4 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RPZF LOST NATION 88 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RPZF LOST NATION 88 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, POLYCHLORINATED Not meeting IL_RPZG SYCAMORE LAKE 7.5 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_RPZG SYCAMORE LAKE 7.5 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RTB DEFIANCE 47.8 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_RTB DEFIANCE 47.8 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RTC SUN 24 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold LAKE, POLYCHLORINATED Not meeting IL_RTD CATHERINE 164.68 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_RTD CATHERINE 164.68 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, Not meeting IL_RTD CATHERINE 164.68 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RTF FOX 1881.12 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RTF FOX 1881.12 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RTF FOX 1881.12 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, POLYCHLORINATED Not meeting IL_RTF FOX 1881.12 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_RTG BANGS 309 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_RTG BANGS 309 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RTH ROUND 228.6 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RTH ROUND 228.6 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_RTI CHANNEL 337 Acres MERCURY Fish Consumption Medium FRESHWATER threshold Table 1 Waters and Impairments Approved on Illinois 120 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, POLYCHLORINATED Not meeting IL_RTI CHANNEL 337 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_RTI CHANNEL 337 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RTJ LONG (LAKE) 393 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RTJ LONG (LAKE) 393 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, Not meeting IL_RTK CEDAR (LAKE) 302 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RTM EAST LOON 170 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria JERICHO LAKE, Not meeting IL_RTO 22 Acres CAUSE UNKNOWN Aesthetic Quality Medium (MIGHELL) FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RTP SLOCUM 211 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RTP SLOCUM 211 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, POLYCHLORINATED Not meeting IL_RTQ GRASS 1623.42 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_RTQ GRASS 1623.42 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RTQ GRASS 1623.42 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RTQ GRASS 1623.42 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RTR MARIE (LAKE) 516 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, POLYCHLORINATED Not meeting IL_RTR MARIE (LAKE) 516 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_RTR MARIE (LAKE) 516 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RTR MARIE (LAKE) 516 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, Not meeting IL_RTS ZURICH 228 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RTS ZURICH 228 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_RTT ANTIOCH 88 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RTT ANTIOCH 88 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RTU PISTAKEE 1700 Acres MERCURY Fish Consumption Medium FRESHWATER threshold Table 1 Waters and Impairments Approved on Illinois 121 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, POLYCHLORINATED Not meeting IL_RTU PISTAKEE 1700 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RTU PISTAKEE 1700 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RTU PISTAKEE 1700 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, POLYCHLORINATED Not meeting IL_RTUA NIPPERSINK 718.16 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_RTUA NIPPERSINK 718.16 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RTUA NIPPERSINK 718.16 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RTUA NIPPERSINK 718.16 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RTV REDHEAD 50 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RTV REDHEAD 50 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold SILVER LAKE, Not meeting IL_RTW 42 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium (McHENRY) FRESHWATER criteria SILVER LAKE, Not meeting IL_RTW 42 Acres MERCURY Fish Consumption Medium (McHENRY) FRESHWATER threshold LAKE, Not meeting IL_RTY GRISWOLD 141 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RTY GRISWOLD 141 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_RTZB WEST LOON 163 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_RTZC WONDER 830 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_RTZD MCCULLOM 245 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Primary Contact Not meeting IL_RTZF TOWER (LAKE) 69 Acres FECAL COLIFORM Low FRESHWATER Recreation criteria LAKE, Not meeting IL_RTZF TOWER (LAKE) 69 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RTZF TOWER (LAKE) 69 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RTZG DUCK 110 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RTZG DUCK 110 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, Not meeting IL_RTZH WOOSTER 98.5 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria Table 1 Waters and Impairments Approved on Illinois 122 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, Not meeting IL_RTZI ISLAND 78.2 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RTZI ISLAND 78.2 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RTZJ LILY 89 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_RTZL SULLIVAN LAKE 58 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_RTZP HIGHLAND 103 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria TIMBER LAKE LAKE, Not meeting IL_RTZQ 33 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low (SOUTH) FRESHWATER criteria TIMBER LAKE LAKE, TOTAL SUSPENDED Not meeting IL_RTZQ 33 Acres Aesthetic Quality Low (SOUTH) FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_RTZR ECHO 25 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_RTZR ECHO 25 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, Not meeting IL_RTZT BARRINGTON 91 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_RTZT BARRINGTON 91 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Primary Contact Not meeting IL_RTZT BARRINGTON 91 Acres FECAL COLIFORM Low FRESHWATER Recreation criteria LAKE, Not meeting IL_RTZU HONEY 66 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, Primary Contact Not meeting IL_RTZU HONEY 66 Acres FECAL COLIFORM Low FRESHWATER Recreation criteria LAKE, Not meeting IL_RTZV KILLARNEY 80 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_RTZZ WOODS CREEK 54 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_RTZZ WOODS CREEK 54 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_RTZZ WOODS CREEK 54 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_SDA EVERGREEN 700 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_SDC WAVERLY 135 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold MAUVAISE LAKE, Not meeting IL_SDL 172 Acres MERCURY Fish Consumption Medium TERRE FRESHWATER threshold MAUVAISE LAKE, Not meeting IL_SDL 172 Acres HEXACHLOROBENZENE Aquatic Life Medium TERRE FRESHWATER threshold Table 1 Waters and Impairments Approved on Illinois 123 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING MAUVAISE LAKE, Not meeting IL_SDL 172 Acres FLUORIDE Aquatic Life Medium TERRE FRESHWATER criteria MAUVAISE LAKE, Not meeting IL_SDL 172 Acres TURBIDITY Aesthetic Quality Medium TERRE FRESHWATER criteria MAUVAISE LAKE, Not meeting IL_SDL 172 Acres DISSOLVED OXYGEN Aquatic Life Medium TERRE FRESHWATER criteria MAUVAISE LAKE, TOTAL SUSPENDED Not meeting IL_SDL 172 Acres Aquatic Life Medium TERRE FRESHWATER SOLIDS (TSS) threshold MAUVAISE LAKE, TOTAL SUSPENDED Not meeting IL_SDL 172 Acres Aesthetic Quality Medium TERRE FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_SDS EUREKA 30 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_SDS EUREKA 30 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_SDS EUREKA 30 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_SDT GILLESPIE OLD 71 Acres MERCURY Fish Consumption High FRESHWATER threshold LAKE, POLYCHLORINATED Not meeting IL_SDZA BRACKEN 172 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_SDZA BRACKEN 172 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_SDZC SCHUY-RUSH 265 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_SDZC SCHUY-RUSH 265 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_SDZC SCHUY-RUSH 265 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_SDZF HETTICK 110 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_SDZM SPRING NORTH 578 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_SDZM SPRING NORTH 578 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_SDZM SPRING NORTH 578 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_SGC BUFFALO CREEK 35 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_SGC BUFFALO CREEK 35 Acres Aquatic Life Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_SGC BUFFALO CREEK 35 Acres DISSOLVED OXYGEN Aquatic Life Low FRESHWATER criteria LAKE, Not meeting IL_SGF SCHILLER POND 6 Acres MERCURY Fish Consumption Medium FRESHWATER threshold Table 1 Waters and Impairments Approved on Illinois 124 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, POLYCHLORINATED Not meeting IL_SGF SCHILLER POND 6 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_SGQ BITTERSWEET 10.7 Acres DISSOLVED OXYGEN Aquatic Life Medium FRESHWATER criteria LAKE, Not meeting IL_SGQ BITTERSWEET 10.7 Acres PHOSPHORUS, TOTAL Aquatic Life Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_SGQ BITTERSWEET 10.7 Acres Aquatic Life Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_SGQ BITTERSWEET 10.7 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_SGQ BITTERSWEET 10.7 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold GRAND AVENUE LAKE, TOTAL SUSPENDED Not meeting IL_SGR 14.3 Acres Aesthetic Quality Medium MARSH FRESHWATER SOLIDS (TSS) threshold GRAND AVENUE LAKE, Not meeting IL_SGR 14.3 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium MARSH FRESHWATER threshold LAKE, Not meeting IL_SGS KATHRYN 5.3 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_SGT LUCY LAKE 8.2 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_SGT LUCY LAKE 8.2 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LONGVIEW LAKE, Not meeting IL_SGU 18 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium MEADOW FRESHWATER threshold LONGVIEW LAKE, TOTAL SUSPENDED Not meeting IL_SGU 18 Acres Aquatic Life Medium MEADOW FRESHWATER SOLIDS (TSS) threshold LONGVIEW LAKE, TOTAL SUSPENDED Not meeting IL_SGU 18 Acres Aesthetic Quality Medium MEADOW FRESHWATER SOLIDS (TSS) threshold LONGVIEW LAKE, Not meeting IL_SGU 18 Acres DISSOLVED OXYGEN Aquatic Life Medium MEADOW FRESHWATER criteria LONGVIEW LAKE, Not meeting IL_SGU 18 Acres PHOSPHORUS, TOTAL Aquatic Life Medium MEADOW FRESHWATER threshold LAKE, Not meeting IL_SGY OSPREY 54.2 Acres PHOSPHORUS, TOTAL Aquatic Life Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_SGY OSPREY 54.2 Acres Aquatic Life Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_SGY OSPREY 54.2 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_SGY OSPREY 54.2 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_SGY OSPREY 54.2 Acres DISSOLVED OXYGEN Aquatic Life Medium FRESHWATER criteria BRIARCREST LAKE, Not meeting IL_SGZ 4 Acres CAUSE UNKNOWN Aesthetic Quality Medium POND FRESHWATER threshold Table 1 Waters and Impairments Approved on Illinois 125 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, Not meeting IL_SOB FARINA 4 Acres TERBUFOS Aquatic Life Low FRESHWATER criteria LAKE, Not meeting IL_SOB FARINA 4 Acres PH Aquatic Life Low FRESHWATER criteria LAKE, Not meeting IL_SOB FARINA 4 Acres DISSOLVED OXYGEN Aquatic Life Low FRESHWATER criteria LAKE, Not meeting IL_SOB FARINA 4 Acres COPPER Aquatic Life Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_SOB FARINA 4 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_SOB FARINA 4 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold Kinmundy Borrow LAKE, Not meeting IL_SOG 5 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium Pit FRESHWATER threshold LAKE, Not meeting IL_SOI PATOKA OLD 6 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_SOI PATOKA OLD 6 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_SOJ PATOKA NEW 6 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_SOJ PATOKA NEW 6 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold SLM LAKE, Not meeting IL_SOL SIDECHANNEL 7 Acres PHOSPHORUS, TOTAL Aesthetic Quality High FRESHWATER threshold RESERVOIR SLM LAKE, TOTAL SUSPENDED Not meeting IL_SOL SIDECHANNEL 7 Acres Aesthetic Quality High FRESHWATER SOLIDS (TSS) threshold RESERVOIR LAKE, Not meeting IL_STC LITTLE SILVER 41 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_STG LEISURE 12 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_STG LEISURE 12 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_STK LAKE FAIRVIEW 20 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_STK LAKE FAIRVIEW 20 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold BROBERG LAKE, TOTAL SUSPENDED Not meeting IL_STN 77 Acres Aesthetic Quality Medium MARSH FRESHWATER SOLIDS (TSS) threshold BROBERG LAKE, Not meeting IL_STN 77 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium MARSH FRESHWATER criteria LAKE NAPA LAKE, TOTAL SUSPENDED Not meeting IL_STO 61 Acres Aesthetic Quality Low SUWE FRESHWATER SOLIDS (TSS) threshold Table 1 Waters and Impairments Approved on Illinois 126 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE NAPA LAKE, Not meeting IL_STO 61 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low SUWE FRESHWATER criteria LAKE, Not meeting IL_STQ DAVIS LAKE 36 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria NORTH LAKE, TOTAL SUSPENDED Not meeting IL_STR 62.4 Acres Aesthetic Quality Low CHURCHILL FRESHWATER SOLIDS (TSS) threshold NORTH LAKE, Not meeting IL_STR 62.4 Acres PHOSPHORUS, TOTAL Aquatic Life Low CHURCHILL FRESHWATER criteria NORTH LAKE, TOTAL SUSPENDED Not meeting IL_STR 62.4 Acres Aquatic Life Low CHURCHILL FRESHWATER SOLIDS (TSS) threshold NORTH LAKE, Not meeting IL_STR 62.4 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low CHURCHILL FRESHWATER criteria SOUTH LAKE, TOTAL SUSPENDED Not meeting IL_STS 24.81 Acres Aquatic Life Low CHURCHILL FRESHWATER SOLIDS (TSS) threshold SOUTH LAKE, Not meeting IL_STS 24.81 Acres PHOSPHORUS, TOTAL Aquatic Life Low CHURCHILL FRESHWATER criteria SOUTH LAKE, TOTAL SUSPENDED Not meeting IL_STS 24.81 Acres Aesthetic Quality Low CHURCHILL FRESHWATER SOLIDS (TSS) threshold SOUTH LAKE, Not meeting IL_STS 24.81 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low CHURCHILL FRESHWATER criteria LAKE, Not meeting IL_STT SEVEN ACRE 6.5 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_STT SEVEN ACRE 6.5 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_STU CHRISTA 8.9 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_STU CHRISTA 8.9 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold WOODLAND LAKE, TOTAL SUSPENDED Not meeting IL_STV 7.7 Acres Aesthetic Quality Medium (HIGHLAND) FRESHWATER SOLIDS (TSS) threshold WOODLAND LAKE, Not meeting IL_STV 7.7 Acres DISSOLVED OXYGEN Aquatic Life Low (HIGHLAND) FRESHWATER criteria WOODLAND LAKE, Not meeting IL_STV 7.7 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low (HIGHLAND) FRESHWATER threshold WOODLAND LAKE, Not meeting IL_STV 7.7 Acres PHOSPHORUS, TOTAL Aquatic Life Low (HIGHLAND) FRESHWATER threshold WOODLAND LAKE, TOTAL SUSPENDED Not meeting IL_STV 7.7 Acres Aquatic Life Medium (HIGHLAND) FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_STW HOOK LAKE 35 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_STW HOOK LAKE 35 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria COUNTRYSIDE LAKE, TOTAL SUSPENDED Not meeting IL_STX 7.9 Acres Aesthetic Quality Medium GLEN FRESHWATER SOLIDS (TSS) threshold Table 1 Waters and Impairments Approved on Illinois 127 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING COUNTRYSIDE LAKE, Not meeting IL_STX 7.9 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium GLEN FRESHWATER threshold LAKE, Not meeting IL_STY HERON POND 7.9 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_UDL FITCH 38.2 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_UGB HALFDAY PIT 12.82 Acres DISSOLVED OXYGEN Aquatic Life Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_UGB HALFDAY PIT 12.82 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_UGB HALFDAY PIT 12.82 Acres Aquatic Life Medium FRESHWATER SOLIDS (TSS) threshold GRANDWOOD LAKE, TOTAL SUSPENDED Not meeting IL_UGC 8.9 Acres Aesthetic Quality Medium PARK LAKE FRESHWATER SOLIDS (TSS) threshold GRANDWOOD LAKE, Not meeting IL_UGC 8.9 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium PARK LAKE FRESHWATER threshold LAKE, Not meeting IL_UGF ST. MARY'S LAKE 105 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_UGF ST. MARY'S LAKE 105 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_UGI PETERSON POND 9 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_UGJ BISHOP 7.1 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_UGJ BISHOP 7.1 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_UGL LAKE LEO 15 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_UGM LAKE NAOMI 13 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_UGM LAKE NAOMI 13 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_UGN BRESEN LAKE 24 Acres PH Aquatic Life Medium FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_UGN BRESEN LAKE 24 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_UGN BRESEN LAKE 24 Acres DISSOLVED OXYGEN Aquatic Life Medium FRESHWATER criteria LAKE, Not meeting IL_UGP POND-A-RUDY 14 Acres DISSOLVED OXYGEN Aquatic Life Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_UGP POND-A-RUDY 14 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_UGP POND-A-RUDY 14 Acres Aquatic Life Medium FRESHWATER SOLIDS (TSS) threshold Table 1 Waters and Impairments Approved on Illinois 128 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, Not meeting IL_UGP POND-A-RUDY 14 Acres PHOSPHORUS, TOTAL Aquatic Life Low FRESHWATER threshold LAKE, Not meeting IL_UGP POND-A-RUDY 14 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER threshold LAKE, Not meeting IL_UGR MARY LEE 15.3 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_UGS STOCKHOLM 13.7 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_UGS STOCKHOLM 13.7 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_UGT WILLOW 8.9 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_UGT WILLOW 8.9 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_UGX WHITE LAKE 42 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria RASMUSSEN LAKE, Not meeting IL_UGY 55 Acres PHOSPHORUS, TOTAL Aquatic Life Medium LAKE FRESHWATER criteria RASMUSSEN LAKE, TOTAL SUSPENDED Not meeting IL_UGY 55 Acres Aesthetic Quality Medium LAKE FRESHWATER SOLIDS (TSS) threshold RASMUSSEN LAKE, Not meeting IL_UGY 55 Acres DISSOLVED OXYGEN Aquatic Life Medium LAKE FRESHWATER criteria RASMUSSEN LAKE, Not meeting IL_UGY 55 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium LAKE FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_UHA LAMB'S FARM 15.91 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_UHB LUCKY LAKE 10 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_UHB LUCKY LAKE 10 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_UHH EAGLE LAKE 22 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_UHH EAGLE LAKE 22 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_UHP NIELSON POND 7 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_UHP NIELSON POND 7 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_UQA DUGDALE 4.61 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_UTA LAKE MATTHEWS 9 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_UTD SCHREIBER 5.36 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold Table 1 Waters and Impairments Approved on Illinois 129 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING DRUMMOND LAKE, Not meeting IL_UTI 21 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low LAKE FRESHWATER criteria DRUMMOND LAKE, TOTAL SUSPENDED Not meeting IL_UTI 21 Acres Aesthetic Quality Low LAKE FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_UTJ OLD OAK 11.92 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_UTK LAKE HOLLOWAY 13 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_UTK LAKE HOLLOWAY 13 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold CRANBERRY LAKE, Not meeting IL_UTL 16 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium LAKE FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_UTM HIDDEN LAKE 19 Acres Aquatic Life Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_UTM HIDDEN LAKE 19 Acres DISSOLVED OXYGEN Aquatic Life Low FRESHWATER criteria LAKE, Not meeting IL_UTM HIDDEN LAKE 19 Acres PHOSPHORUS, TOTAL Aquatic Life Low FRESHWATER threshold LAKE, Not meeting IL_UTM HIDDEN LAKE 19 Acres PH Aquatic Life Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_UTM HIDDEN LAKE 19 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_UTM HIDDEN LAKE 19 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER threshold COLUMBUS PARK LAKE, TOTAL SUSPENDED Not meeting IL_UTP 7 Acres Aesthetic Quality Medium LAKE FRESHWATER SOLIDS (TSS) threshold COLUMBUS PARK LAKE, Not meeting IL_UTP 7 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium LAKE FRESHWATER threshold LAKELAND LAKE, Not meeting IL_UTS 14 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium ESTATES FRESHWATER threshold NORTH TOWER LAKE, Not meeting IL_UTT 7 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium LAKE FRESHWATER threshold NORTH TOWER LAKE, TOTAL SUSPENDED Not meeting IL_UTT 7 Acres Aesthetic Quality Medium LAKE FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_UTV CROSS 88.91 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE LAKE, Not meeting IL_UTW 26 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low TRANQUILITY FRESHWATER criteria LAKE LAKE, TOTAL SUSPENDED Not meeting IL_UTW 26 Acres Aesthetic Quality Low TRANQUILITY FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_UTX McGREAL LAKE 24 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE-OF-THE- LAKE, Not meeting IL_UTZ 75 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium HOLLOW FRESHWATER criteria Table 1 Waters and Impairments Approved on Illinois 130 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, Not meeting IL_VGA AMES PIT 10 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold REDWING LAKE, Not meeting IL_VGD 203 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium SLOUGH FRESHWATER criteria REDWING LAKE, TOTAL SUSPENDED Not meeting IL_VGD 203 Acres Aesthetic Quality Medium SLOUGH FRESHWATER SOLIDS (TSS) threshold INTERNATIONAL LAKE, TOTAL SUSPENDED Not meeting IL_VGF MINING AND 6.7 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold CHEMICAL INTERNATIONAL LAKE, Not meeting IL_VGF MINING AND 6.7 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold CHEMICAL ALBERT LAKE LAKE, Not meeting IL_VGG 18 Acres DISSOLVED OXYGEN Aquatic Life Low (outlet) FRESHWATER criteria ALBERT LAKE LAKE, TOTAL SUSPENDED Not meeting IL_VGG 18 Acres Aesthetic Quality Medium (outlet) FRESHWATER SOLIDS (TSS) threshold ALBERT LAKE LAKE, TOTAL SUSPENDED Not meeting IL_VGG 18 Acres Aquatic Life Medium (outlet) FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_VGH WERHANE LAKE 15 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_VGH WERHANE LAKE 15 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_VGJ HARVEY LAKE 15 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_VGJ HARVEY LAKE 15 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_VGO COLLEGE TRAIL 8.5 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_VGO COLLEGE TRAIL 8.5 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold ROLLINS LAKE, Not meeting IL_VGW 8 Acres CAUSE UNKNOWN Aesthetic Quality Medium SAVANNA #1 FRESHWATER threshold ROLLINS LAKE, Not meeting IL_VGX 53 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium SAVANNA #2 FRESHWATER criteria LAKE, Not meeting IL_VGZ WHALON 249 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria ROCK RUN LAKE, Not meeting IL_VGZA 224 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium ROOKERY FRESHWATER criteria LAKE, Not meeting IL_VGZD DES PLAINES 21 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_VTD DEEP (LAKE) 225.5 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Primary Contact Not meeting IL_VTD DEEP (LAKE) 225.5 Acres FECAL COLIFORM Low FRESHWATER Recreation criteria Table 1 Waters and Impairments Approved on Illinois 131 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, Not meeting IL_VTH DUNNS 68 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, Not meeting IL_VTH DUNNS 68 Acres PHOSPHORUS, TOTAL Aquatic Life Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_VTH DUNNS 68 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_VTI GRASSY (LAKE) 41 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_VTI GRASSY (LAKE) 41 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, Not meeting IL_VTJ BLUFF 86 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, POLYCHLORINATED Not meeting IL_VTJ BLUFF 86 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_VTJ BLUFF 86 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_VTJ BLUFF 86 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_VTK FISH-DUNCAN 96 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_VTK FISH-DUNCAN 96 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LOON (SILVER LAKE, Not meeting IL_VTP 16 Acres MERCURY Fish Consumption Medium SPRING) FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_VTT FISCHER LAKE 23 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_VTT FISCHER LAKE 23 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, Not meeting IL_VTU SHABBONA 318 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_VTU SHABBONA 318 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_VTW PETITE 165 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, POLYCHLORINATED Not meeting IL_VTW PETITE 165 Acres Fish Consumption Medium FRESHWATER BIPHENYLS (PCBS) threshold LAKE, Not meeting IL_VTW PETITE 165 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, Not meeting IL_VTX HOLIDAY 326 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_VTZA TURNER 43 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_VTZA TURNER 43 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria Table 1 Waters and Impairments Approved on Illinois 132 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING LAKE, Not meeting IL_VTZJ LOUISE 38 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low FRESHWATER criteria LAKE, TOTAL SUSPENDED Not meeting IL_VTZJ LOUISE 38 Acres Aesthetic Quality Low FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_VTZX OWENS 5 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_VTZX OWENS 5 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_VTZY TAYLOR 8.3 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_VTZY TAYLOR 8.3 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_WDL THOMPSON 3783 Acres MERCURY Fish Consumption Medium FRESHWATER threshold LOVELESS LAKE, Not meeting IL_WDW 121 Acres PHOSPHORUS, TOTAL Aesthetic Quality High (Carlinville II) FRESHWATER criteria Public and Food LOVELESS LAKE, Not meeting IL_WDW 121 Acres SIMAZINE Processing Water High (Carlinville II) FRESHWATER threshold Supplies LAKE, Not meeting IL_WGA MEADOW 4.9 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_WGB MARMO 3.7 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_WGC STERLING POND 2.1 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_WGC STERLING POND 2.1 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold MEADOW LAKE LAKE, Not meeting IL_WGF 3.8 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium W. FRESHWATER threshold MEADOW LAKE LAKE, TOTAL SUSPENDED Not meeting IL_WGF 3.8 Acres Aesthetic Quality Medium W. FRESHWATER SOLIDS (TSS) threshold RENWICK LAKE LAKE, Not meeting IL_WGI 330 Acres MERCURY Fish Consumption Medium EAST FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_WGK SALEM-REED 41 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_WGL MEADOW LAKE E. 2 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_WGL MEADOW LAKE E. 2 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_WGM HERRICK 20.5 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria WATERFORD LAKE, Not meeting IL_WGS 67 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium (WALDEN) FRESHWATER criteria Table 1 Waters and Impairments Approved on Illinois 133 of 133 of Illinois 2018 Decison Document 2018 303(d) List 3/4/2021 CWA303D ASSESSMENT ASSESSMENT WATER PARAMETER WATER TYPE NAME UNITS PARAMETER NAME USE PRIORITY UNIT ID UNIT NAME SIZE ATTAINMENT RANKING WATERFORD LAKE, TOTAL SUSPENDED Not meeting IL_WGS 67 Acres Aesthetic Quality Medium (WALDEN) FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_WGU OLD MILL 8.3 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_WGU OLD MILL 8.3 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_WGZF DEER LAKE 59 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_WGZI OLD SCHOOL 12 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold LAKE, Not meeting IL_WGZL PICKEREL 22 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER criteria LAKE, Not meeting IL_WGZR HIDDEN 10 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold LAKE, TOTAL SUSPENDED Not meeting IL_WGZR HIDDEN 10 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_WGZU BIG BEAR 25 Acres Aquatic Life Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_WGZU BIG BEAR 25 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, TOTAL SUSPENDED Not meeting IL_WGZV LITTLE BEAR 26 Acres Aesthetic Quality Medium FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_WGZW RICE (DuPAGE) 38 Acres CAUSE UNKNOWN Aesthetic Quality Medium FRESHWATER threshold SWAN (Indian LAKE, Not meeting IL_WGZY 4 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium Lake) FRESHWATER threshold SUMMERHILL LAKE, Not meeting IL_WTA 49.9 Acres PHOSPHORUS, TOTAL Aesthetic Quality Low ESTATE FRESHWATER criteria SUMMERHILL LAKE, TOTAL SUSPENDED Not meeting IL_WTA 49.9 Acres Aesthetic Quality Low ESTATE FRESHWATER SOLIDS (TSS) threshold LAKE, Not meeting IL_WTB LOCHANORA 10.3 Acres PHOSPHORUS, TOTAL Aesthetic Quality Medium FRESHWATER threshold