Black Watershed WRIA 23
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Black Watershed WRIA 23 Chapter Includes: Beaver Creek Black River Deep Lake Salmon Creek Beaver Creek #667 PART OF BLACK RIVER including Scott and Deep Lakes. It has WATERSHED extensive wetlands associated with it. LENGTH OF RIVER: 11.4 miles GENERAL WATER QUALITY: BASIN SIZE: 21 square miles Good – Part II of the fecal coliform standard was not met at the Littlerock Rd. site for both STREAM ORDER: 3 water years 2003-04 and 2004-05. Low dissolved oxygen levels occur occasionally at PRIMARY LAND USES: the upstream Case Road site due to low stream gradient and flow. Light industrial and commercial in the Maytown and Littlerock communities, and OTHER DATA: agriculture and rural residential Thurston County Department of Water and FISHERIES RESOURCES: (From A Waste Management, (360) 357-2491 or Catalog of Washington Steams and Salmon www.co.thurston.wa.us/monitoring Utilization, WDOF) Thurston County Environmental Health Coho Division, (360) 754-4111 or www.geodata.org/swater GENERAL TOPOGRAPHY: Beaver Creek is a tributary to the Black River and drains the east side of the river basin, 11 Beaver Creek #667 Beaver Creek @ Littlerock Rd The water quality standard for fecal Part I of Fecal Coliform Standard 100000 coliform bacteria has two parts: Part I - the geometric mean shall not exceed 100 10000 Part I - Mean less than 100 cfu/100 mL colony forming units per 100 milliliters of 1000 sample and, Part II - no more than ten 100 percent of the samples shall exceed 200 10 cfu/100 mL. 1 93 95 96 97 98 99 00 01 02 03 04 05 FC Range & Geometric Mean (cfu/100mL) Water Year (October - September) Data was not collected in water year 1993 - 94. Part II of Fecal Coliform Standard 100 The creek met both parts of the fecal 80 coliform standard at the Littlerock Part II - no more than 10% of samples over 200 cfu/100 mL 60 Road site between 2000 and 2003. But in the 2003/04 and 2004/05 water 40 years, it failed part II of the standard. 20 Percent of Samples >200 cfu/100 mL 0 93 95 96 97 98 99 00 01 02 03 04 05 Water Year (October - September) Dissolved Oxygen Levels by Year 15 The water quality standard for 14 dissolved oxygen is a lowest one-day 13 minimum of 8 mg/L. There have been 12 11 no recorded violation of the dissolved 10 oxygen standard at the Littlerock Road 9 site, but low dissolved oxygen has been Dissolved Oxygen (mg/L) 8 measured farther upstream at Case 7 Water Quality Standard - greater than 8 mg/L 6 Road. 93 95 96 97 98 99 00 01 02 03 04 05 Water Year (October - September) pH Levels by Year 9 Water Quality Standard - between 6.5 and 8.5 The standard for pH requires the pH 8.5 to be within the range of 6.5 to 8.5. 8 There have been three violations 7.5 measured in the period of record pH since 1993. 7 6.5 6 93 95 96 97 98 99 00 01 02 03 04 05 Water Year (October - September) 12 Beaver Creek #667 Beaver Creek was monitored at two locations as part of the ambient monitoring program, Littlerock Road Bridge (formerly Hwy 121 Bridge) and Case Road Bridge. The Littlerock Road site is the downstream-most location before the creek discharges to the Black River. The Case Road site was an upstream site used for comparison. Monitoring at the Case Road site was discontinued in 2005. A Washington Department of Ecology study on the Black River and Beaver Creek identified a large dairy operation, located downstream of Case Road, as a major contributor of bacteria and nutrients to the creek. In the late 1990’s the dairy owner implemented many changes in the farm’s operation to mitigate the pollution load to the creek. Those efforts substantially reduced the bacteria levels in the creek and water quality improved. However in the last two water years, 2003/04 and 2004/05, part II of the standard was violated again after 4 years of meeting the standard. It is likely that livestock access issues upstream are contributing to the recent bacteria increase seen. Thurston County is addressing unrestricted livestock practices at one site. Major Issues: # Livestock access practices may be contributing to pollution. # Development pressures are continuing to increase in the area. Funding Sources: # Thurston County 13 _______________________________________________________________________________ Beaver Creek#667 Water Quality Summary Conventional Parameters Beaver Creek at Littlerock Road (formerly Hwy 121) Water Year Data: Cumulative Data: 2003/2004 and 2004/2005 1992-2003 Parameter Units WQ Standard WAC 173-201A # samples Water Mean Range violating Mean Range Year standard Highest 7-DAD 03/04 5.88 – 17.8 Temperature EC 2.90 - 18.25 Max of 17.5EC 04/05 3.46 – 16.78 Dissolved Lowest one-day 03/04 9.29 – 12.16 0 of 9 mg/L 8.53 - 14.4 Oxygen minimum of 8.0 04/05 9.86 – 13.1 0 of 12 03/04 93 70 - 118 Conductivity Fmhos/cm 85 43 - 160 14 04/05 91 70 – 121 03/04 7.3* 6.8 - 7.5 0 of 9 pH 6.5 - 8.5 6.3 - 7.8 04/05 7.1* 6.2 - 7.8 1 of 12 not to exceed 5 Turbidity NTU NTU over 03/04 1.9 0.7 – 2.6 0 of 9 2.98 1 - 10.0 background 04/05 2.23 0.9 – 4.2 0 of 12 % exceeding GMV: <100 colonies/ 03/04 12** 0 - 245 200 Fecal Coliform and < 10% not 115** 0 – 26000 100 ml 04/05 64** 10 - 800 11% to exceed 200 25% Total 03/04 0.041 0.029 - 0.07 mg/L 0.07 0.03 - 0.43 Phosphorus 04/05 0.045 0.022 - 0.089 Nitrate + Nitrite- 03/04 0.7 0.327 – 0.996 mg/L 0.944 0.369 – 2.61 nitrogen 04/05 0.846 0.389 – 2.06 Ammonia mg/L 0.078 <0.010 - 0.407 * Median ** Geometric mean value (GMV) _______________________________________________________________________________ Water Quality Summary Conventional Parameters Beaver Creek at Case Road Cumulative Data: Water Year Data: 1996-2003 Parameter Units WQ Standard 2003/2004 WAC 173-201A Water # samples violating Mean Range Mean Range Year standard Highest 7-DAD Temperature EC 03/04 5.63 – 17.49 3.26 - 17.59 Max of 17.5EC Dissolved Lowest one-day mg/L 03/04 7.08 – 11.5 1 of 9 5.88 - 12.4 Oxygen minimum of 8.0 15 Conductivity Fmhos/cm 03/04 105 63 – 168 93 41 – 181 pH 6.5 - 8.5 03/04 6.9* 6.7 - 7.2 0 of 9 6.4 - 7.6 not to exceed 5 Turbidity NTU NTU over 03/04 2.0 1.1 – 3.3 0 of 9 2.4 0.9 - 6.4 background GMV: <100 and % exceeding colonies/ Fecal Coliform < 10% not to 03/04 40** 10 - 245 200 26** 0 – 510 100 ml exceed 200 11% Total mg/L 03/04 0.028 0.014 - 0.051 0.03 0.009 - 0.18 Phosphorus Beaver Creek#667 Nitrate + mg/L 03/04 0.328 0.176 - 0.519 0.356 0.081 – 1.48 Nitrite-nitrogen Ammonia mg/L 0.020 <0.010 - 0.045 * Median ** Geometric mean value (GMV) Thurston County Water Resources Monitoring Report 2003 - 2004 Beaver Creek @ Littlerock Road _______________________________________________________________________________ Beaver Creek#667 Date Time Temp pH DO Cond @25c FC Turb Flow TP NOx COMMENTS C mg/L umhos/cm cfu/100mL NTU cfs mg/L mg/L 12/17/2003 1:10:00 PM 5.88 6.8 11.82 70 02.2 0.0340.668 FC <5. Too fast and deep to measure flow 1/20/2004 1:45:00 PM 7.17 7.0 11.41 74 02.5 0.0290.690 FC <5. Too fast and deep to do flow 2/18/2004 11:00:00 AM 6.61 6.9 11.56 71 101.8 0.0360.672 Too fast and deep to wade. 3/16/2004 10:20:00 AM 9.06 7.2 12.16 89 51.9 38.8 0.032 0.832 4/20/2004 1:20:00 PM 10.92 7.5 11.62 93 501.6 31.6 0.038 0.754 5/17/2004 2:20:00 PM 14.82 7.4 10.62 106 02.5 13.3 0.0410.996 F.C. result is <5 7/14/2004 1:40:00 PM 17.80 7.3 9.69 111 1150.7 3.7 0.050 0.741 16 8/25/2004 1:45:00 PM 17.31 7.2 9.29 103 2452.6 11.0 0.070 0.327 9/21/2004 11:30:00 AM 12.24 7.4 11.38 118 501.4 10.1 0.036 0.622 Thurston County Water Resources Monitoring Report 2003 - 2004 Beaver Creek @ Case Road _______________________________________________________________________________ Date Time Temp pH DO Cond @25c FC Turb Flow TP NOx COMMENTS C mg/L umhos/cm cfu/100mL NTU cfs mg/L mg/L 12/17/2003 1:30:00 PM 5.63 6.8 10.98 63 103.3 0.0160.519 Too deep & too fast to measure flow. 1/20/2004 2:10:00 PM 7.10 6.7 11.50 67 201.8 39.3 0.014 0.450 2/18/2004 10:30:00 AM 6.19 6.9 10.60 63 301.3 0.0170.390 Too deep to wade 3/16/2004 9:45:00 AM 8.65 7.2 10.55 82 502.3 17.2 0.021 0.290 4/20/2004 1:50:00 PM 10.62 7.2 89 153.2 11.0 0.0290.238 Dissolved Oxygen field recording error 5/17/2004 3:00:00 PM 14.20 7.0 9.56 115 751.7 3.4 0.0350.277 DO-93%saturation 7/14/2004 2:20:00 PM 17.49 7.2 9.87 155 201.1 1.4 0.037 0.259 17 8/25/2004 2:15:00 PM 16.10 6.7 7.08 168 2451.8 4.7 0.051 0.352 9/21/2004 11:10:00 AM 11.45 7.2 8.40 145 1051.3 2.7 0.031 0.176 Beaver Creek#667 Thurston County Water Resources Monitoring Report 2004 - 2005 Beaver Creek @ Littlerock Road _______________________________________________________________________________ Beaver Creek#667 Date Time Temp pH DO Cond @25c FC Turb Flow TP NOx COMMENTS C mg/L umhos/cm cfu/100mL NTU cfs mg/L mg/L 10/20/2004 1:30:00 PM 11.64 6.7 10.09 93 403.5 30.6 0.0660.412 Salmon in creek.