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Sammamish River Diel Dissolved Oxygen and pH Study September 21, 2005

Sammamish River Diel Dissolved Oxygen and pH Study September 21, 2005. STUDY AREA. Sammamish River Basins. North Creek. Little Bear Creek. Swamp Creek. Big Bear Creek. Study Goals. Diel variation of DO and pH during summer low-flow period

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Sammamish River Diel Dissolved Oxygen and pH Study September 21, 2005

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  1. Sammamish River Diel Dissolved Oxygen and pH StudySeptember 21, 2005

  2. STUDY AREA

  3. Sammamish River Basins North Creek Little Bear Creek Swamp Creek Big Bear Creek

  4. Study Goals • Diel variation of DO and pH during summer low-flow period • Focus on upper reach between Lake Sammamish and Woodinville • Provide information for development of dynamic water quality model

  5. CE-QUAL-W2 Model • Vertically 2-D model • Laterally averaged • Hydrodynamics, temperature, algae/eutrophicaton kinetics • Epiphyton and riparian shade model added recently

  6. Sammamish River Model

  7. Historical Data

  8. DISSOLVED OXYGEN 2003 - 2004 Sammamish River routine grab ambient monitoring data

  9. DISSOLVED OXYGEN 2003 - 2004 Sammamish River routine grab ambient monitoring data

  10. Monitoring Locations

  11. Reconnaissance Data

  12. Sammamish River diel DO and pH data collected in 2000

  13. Sammamish River diel DO and pH data collected in 2002

  14. 2003 Study Results

  15. Photo Tour of Sampling Sites

  16. Redmond Rowing Club

  17. Between Bear Creek and Redmond Railroad Bridge

  18. Redmond Railroad Bridge

  19. Redmond Railroad Bridge

  20. Upstream of NE 116th St Bridge

  21. Upstream of NE 145th St Bridge

  22. Woodinville Railroad Bridge

  23. I-405 Bridges

  24. Upstream of Blyth Park (old Railroad Bridge)

  25. Summer 2003 Flow and Precipitation Conditions

  26. Daily maximum discharge and total daily precipitation recorded by local King County gauges in the Little Bear and Big Bear Creek basins during the 2003 study

  27. Time Series Data

  28. Sammamish River YSI EDS data, 2003

  29. 7/22/03 through 7/30/03 Sammamish River YSI data from the third deployment

  30. 8/22/03 through 9/2/03 Sammamish River YSI data from the fourth deployment

  31. Longitudinal Summary Plots

  32. Longitudinal profiles of Sammamish River maximum temperature, temperature range, minimum DO, and DO range for selected days in 2003

  33. Longitudinal profiles of Sammamish River maximum pH, pH range, minimum DO percent saturation, and DO percent saturation range for selected days in 2003

  34. Comparison to Water Quality Standards

  35. Comparison of 2003 Sammamish River YSI continuous temperature, DO and pH data to water quality standards

  36. Critical Period for DO?

  37. DISSOLVED OXYGEN 2003 - 2004 Sammamish River routine grab ambient monitoring data

  38. DO SATURATION 2003 - 2004 Sammamish River routine grab ambient monitoring data

  39. Unintended Results Storm Event

  40. Daily maximum discharge and total daily precipitation recorded by local King County gauges in the Little Bear and Big Bear Creek basins during the 2003 study

  41. 9/1/2003 through 9/14/2003 Temperature, specific conductance, DO and pH data recorded by the YSI EDS sonde

  42. Unintended Results Conductance/Groundwater Linkages

  43. Longitudinal trend in specific conductance, 8/22/2003 through 9/2/2003

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