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Nisqually River Basin TMDL
Nisqually River Basin TMDL
Nisqually River Basin TMDL
Nisqually River Basin TMDL
Nisqually River Basin TMDL
Nisqually River Basin TMDL
Nisqually River Basin TMDL
Nisqually River Basin TMDL
Nisqually River Basin TMDL
Nisqually River Basin TMDL
Nisqually River Basin TMDL
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Nisqually River Basin TMDL

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A presentation by Cindy James, WA Department of Ecology, to the Nisqually River Council's Environmental Advisory Committee in January 2010. …

A presentation by Cindy James, WA Department of Ecology, to the Nisqually River Council's Environmental Advisory Committee in January 2010.

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  • The lower reach of Medicine Creek, from RM 0.3 to RM 0.05, met FC water quality standards for Extraordinary Primary Contact Recreation during the study period from October 8, 2007 to April 7, 2008.  The FC concentrations generally did increase from upstream to downstream. However, they did not consistently respond to rainfall or storm events during this study period.  Improved FC bacteria concentrations seen during this study period could be due to low rainfall during the study period or may be a result of improved waste management activities in the watershed. Nitrate+nitrite-N concentrations are elevated in Medicine Creek. Mean concentrations increased 1 mg/ L from upstream to downstream. Possible contributors to nitrate+nitrite-N in surface water may be from groundwater or agricultural fertilizers.  There appears to be an inverse response to concentrations of FC and nitrate+nitrite-N. If groundwater is the primary source of nitrates, then the groundwater may be diluting bacteria concentrations as it contributes nitrate+nitrite-N.Storm events should be targeted if additional wet season monitoring for FC bacteria sampling is considered. This will strengthen conclusions that bacterial water quality is improving. Monitor FC bacteria concentrations during the summer months to characterize conditions during low flow and active agriculture.  Sources of nitrate+nitrite-N in the lower reach of Medicine Creek, other than groundwater, should be investigated. For example, investigate whether fertilizer with nitrate+nitrite-N is being applied at agronomic rates to the adjacent agricultural fields and if there are any septic tanks in the area that need maintenance.  
  • Transcript

    • 1. Nisqually River Basin TMDL Fecal Coliform
      Cindy James, South Puget Sound TMDL Lead, Dept of Ecology
    • 2. Nisqually River Basin TMDL Fecal Coliform
      TMDL Study Report May 2005
      Detailed Implementation Plan May 2007
      Adaptive Management Meeting January 2009
    • 3. Four Focus Areas
      Nisqually Reach
      Red Salmon Creek
      Ohop/Lynch
      McAllister Creek
    • 4. Implementation Activities in the Nisqually TMDL area
      • Removal of animals from Braget Farm property.
      • 5. Animal access to ditches and waterways fenced and riparian area planted on farms near McAllister Creek. Is more needed?
      • 6. Riparian planting on Ohop Creek and Nisqually Reach.
      • 7. Thurston County beginning O and M program similar to Henderson
      • 8. Source sampling of problem areas in Medicine Creek and McAllister Creek. Results were not conclusive.
    • Medicine Creek Data Fecal Coliform
    • 9. Medicine Creek Nitrate/Nitrite
    • 10. McAllister Creek fecal data
    • 11. Ohop Creek @ mouthPierce County Surface Water Management
    • 12. Lynch Creek @ mouthPierce County Surface Water Management
    • 13. McAllister Creek Data @ I-5 Thurston County Environmental Health
    • 14. What are the next steps?
      • Adaptive Management Meeting in early 2010 (determine what implementation actions have been done/not done)
      • 15. Help stakeholders to complete incomplete actions (discuss barriers). More actions if needed
      • 16. Work towards effectiveness
      monitoring.

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