Figure: 30 TAC §307.10(1) Appendix A
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Figure: 30 TAC §307.10(1) Appendix A - Site-specific Uses and Criteria for Classified Segments The following tables identify the water uses and supporting numerical criteria for each of the state's classified segments. The tables are ordered by basin with the segment number and segment name given for each classified segment. Marine segments are those that are specifically titled as "tidal" in the segment name, plus all bays, estuaries and the Gulf of Mexico. The following descriptions denote how each numerical criterion is used subject to the provisions in §307.7 of this title (relating to Site-Specific Uses and Criteria), §307.8 of this title (relating to Application of Standards), and §307.9 of this title (relating to Determination of Standards Attainment). Segments that include reaches that are dominated by springflow are footnoted in this appendix and have critical low-flows calculated according to §307.8(a)(2) of this title. These critical low-flows apply at or downstream of the spring(s) providing the flows. Critical low-flows upstream of these springs may be considerably smaller. Critical low-flows used in conjunction with the Texas Commission on Environmental Quality regulatory actions (such as discharge permits) may be adjusted based on the relative location of a discharge to a gauging station. -1 -2 The criteria for Cl (chloride), SO4 (sulfate), and TDS (total dissolved solids) are listed in this appendix as maximum annual averages for the segment. Dissolved oxygen criteria are listed as minimum 24-hour means at any site within the segment. Absolute minima and seasonal criteria are listed in §307.7 of this title unless otherwise specified in this appendix. Dissolved oxygen criteria of 2.0 mg/L in this appendix are allowed a daily variation down to 1.5 mg/L for no more than eight hours per 24-hour period. Dissolved oxygen criteria of 1.0 mg/L in this appendix will be considered minimum values at any time. The pH criteria are listed as minimum and maximum values expressed in standard units at any site within the segment. The freshwater indicator bacteria for recreation is E. coli. Enterococci is the indicator bacteria for recreation in saltwater and certain high saline inland water bodies with typical high conductivity values. The appropriate bacterial criteria are listed in the appendix under the Indicator Bacteria column and are applied as specified in §307.7(b)(1) of this title. The indicator bacteria for suitability for oyster waters is fecal coliform. The fecal coliform criteria for oyster waters is 14 colonies per 100 mL as specified in §307.7(b)(3)(B) of this title. The criteria for temperature are listed as maximum values at any site within the segment except as noted in §307.4(h) of this title (relating to General Criteria) and §307.8(b) of this title. Footnotes are defined at the end of each basin or bay and estuary table, as appropriate. Canadian River Basin Designated Uses and Numeric Criteria Domestic Aquatic Water Dissolved pH Indicator -1 -2 1 Segment Canadian River Basin Recreation Life Supply Other Cl SO4 TDS Oxygen Range Bacteria Temperature No. Segment Names Use Use Use Uses (mg/L) (mg/L) (mg/L) (mg/L) (SU) #/100 mL (degrees F) 0101 Canadian River Below Lake Meredith PCR1 H 1,975 760 5,000 5.0 6.5-9.0 126 95 0102 Lake Meredith PCR1 E PS 400 350 1,300 6.0 6.5-9.0 126 85 0103 Canadian River Above Lake Meredith PCR1 H 1,050 540 4,500 5.0 6.5-9.0 126 95 0104 Wolf Creek PCR1 H 420 125 1,125 5.0 6.5-9.0 126 93 0105 Rita Blanca Lake NCR L WF2 200 200 1,000 3.0 6.5-9.0 126 85 1 The indicator bacteria for freshwater is E. coli. 2 Segment 0105 is designated as high quality waterfowl habitat Red River Basin Designated Uses and Numeric Criteria Domestic Dissolved pH Indicator -1 -2 1 Segment Red River Basin Recreation Aquatic Water Other Cl SO4 TDS Oxygen Range Bacteria Temperature No. Segment Names Use Life Use Supply Use Uses (mg/L) (mg/L) (mg/L) (mg/L) (SU) #/100 mL (degrees F) 0201 Lower Red River PCR1 H PS 375 250 1,100 5.0 6.5-9.0 126 93 0202 Red River Below Lake Texoma PCR1 H PS 375 250 1,100 5.0 6.5-9.0 126 93 0203 Lake Texoma PCR1 H PS 600 300 1,500 5.0 6.5-9.0 126 92 0204 Red River Above Lake Texoma PCR1 H 2,000 1,200 6,000 5.0 6.5-9.0 33 93 0205 Red River Below Pease River PCR1 H 5,000 2,000 10,000 5.0 6.5-9.0 33 93 0206 Red River Above Pease River PCR1 H 12,000 4,000 25,000 5.0 6.5-9.0 33 93 0207 Lower Prairie Dog Town Fork Red River PCR1 H 37,000 5,300 46,200 5.0 6.5-9.0 33 93 0208 Lake Crook PCR1 H PS 75 150 350 5.0 6.5-9.0 126 90 0209 Pat Mayse Lake PCR1 H PS 100 175 350 5.0 6.5-9.0 126 90 0210 Farmers Creek Reservoir PCR1 H PS 200 60 550 5.0 6.5-9.0 126 93 0211 Little Wichita River PCR1 H PS 450 250 500 3.0 2 6.5-9.0 126 91 0212 Lake Arrowhead PCR1 H PS 250 50 500 5.0 6.5-9.0 126 93 0213 Lake Kickapoo PCR1 H PS 100 50 400 5.0 6.5-9.0 126 90 0214 Wichita River Below Diversion Lake PCR1 H 1,800 800 5,000 5.0 6.5-9.0 126 90 0215 Diversion Lake PCR1 H 1,800 1,100 5,000 5.0 6.5-9.0 126 90 0216 Wichita River Below Lake Kemp PCR1 H 1,925 960 5,000 5.0 6.5-9.0 126 90 0217 Lake Kemp 3 PCR1 H 7,000 2,500 15,000 5.0 6.5-9.0 33 93 0218 Wichita/North Fork Wichita River 4 PCR1 H 7,500 2,800 16,250 5.0 6.5-9.0 33 93 0219 Lake Wichita PCR1 H 1,000 400 1,800 5.0 6.5-9.0 126 90 0220 Upper Pease/North Fork Pease River PCR1 H 12,000 3,500 30,000 5.0 6.5-9.0 33 91 0221 Middle Fork Pease River PCR1 H 870 1,400 2,800 5.0 6.5-9.0 126 91 0222 Salt Fork Red River PCR1 H 400 1,400 3,000 5.0 6.5-9.0 126 93 0223 Greenbelt Lake PCR1 H PS 250 200 750 5.0 6.5-9.0 126 93 0224 North Fork Red River PCR1 H 800 1,200 2,500 5.0 6.5-9.0 126 91 0225 McKinney Bayou PCR1 L PS 60 90 400 3.0 6.0-8.5 126 93 0226 South Fork Wichita River 3 PCR1 H 12,000 3,650 31,000 5.0 6.5-9.0 33 93 0227 South Fork Pease River PCR1 H 270 200 1,000 5.0 6.5-9.0 126 91 0228 Mackenzie Reservoir PCR1 H PS 50 200 500 5.0 6.5-9.0 126 90 0229 Upper Prairie Dog Town Fork Red River PCR1 H 350 675 2,000 5.0 6.5-9.0 126 93 0230 Pease River PCR1 I 12,000 3,500 30,000 4.0 6.5-9.0 33 91 1 The indicator bacteria for freshwater is E. coli. The indicator bacteria for Segments 0204, 0205, 0206, 0207, 0217, 0218, 0220, 0226, and 0230 is Enterococci. 2 The 24-hour minimum dissolved oxygen criterion in Segment 0211 is 2.0 mg/L. 3 It is anticipated that inorganic chemical quality in Segment 0217 and 0226 should improve following completion and as a result of the operation of salinity control projects. 4 The critical low-flow for Segment 0218 is calculated according to §307.8(a)(2)(B) of this title. Sulphur River Basin Designated Uses and Numeric Criteria Domestic Dissolved pH Indicator -1 -2 1 Segment Sulphur River Basin Recreation Aquatic Water Other Cl SO4 TDS Oxygen Range Bacteria Temperature No. Segment Names Use Life Use Supply Use Uses (mg/L) (mg/L) (mg/L) (mg/L) (SU) #/100 mL (degrees F) 0301 Sulphur River Below Wright Patman Lake PCR1 H 120 100 500 5.0 6.0-8.5 126 90 0302 Wright Patman Lake PCR1 H PS 75 75 400 5.0 6.5-9.5 126 90 0303 Sulphur/South Sulphur River PCR1 H 80 180 600 5.0 6.0-8.5 126 93 0304 Days Creek PCR1 I 525 75 850 4.0 6.0-8.5 126 90 0305 North Sulphur River 2,3 PCR1 I2 190 475 1,320 5.0 6.0-8.5 126 93 0306 Upper South Sulphur River PCR1 I 80 180 600 4.0 6.5-9.0 126 93 0307 Jim L. Chapman Lake PCR1 H PS 50 50 225 5.0 6.5-9.0 126 93 1 The indicator bacteria for freshwater is E. coli. 2 For the purpose of assessment, the intermediate aquatic life use applies only to the fish community. The benthic community is to be assessed using a limited aquatic life use.