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| Title | Snoqualmie River Low Flow Water Quality Assessment, July-September 1989. | |||
| Month-Year Published | April 1991 | |||
| Online Availability |
11952 kilobytes, requires version 4.0 or later of Adobe Acrobat Reader Software get Acrobat Reader
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| Short Description |
A low flow water quality study was conducted on 44.5 miles of the Snoqualmie River from July through September 1989. The primary purposes were to describe baseline water quality, evaluate the relative impacts of current point and nonpoint discharges of conventional contaminants, develop a computer model to assess the future impacts from point sources, and recommend a protection plan. (Also see abstract below) | |||
| Publication Number | 91-e30 | |||
| Author(s) | Joy, J., G. Pelletier, R. Williams, M. Heffner, and E. Aroner | |||
| Print Availability |
Not maintained in stock. Copy must be made from archive version.
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| Number of pages | 180 pp. | |||
| Keywords | ammonia, assessment, biological, chemical, contaminant, dissolved oxygen, fecal coliform, flow, model, nonpoint, phosphorus, point source, quality, river, study, temperature, water, water quality | |||
| Subject Waterbodies |
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| Abstract | Long Description |
A low flow water quality study was conducted on 44.5 miles of the Snoqualmie River from July through September 1989. The primary purposes were to describe baseline water quality, evaluate the relative impacts of current point and nonpoint discharges of conventional contaminants, develop a computer model to assess the future impacts from point sources, and recommend a protection plan. Based on the physical, chemical, and biological water quality data collected, portions of the river did not meet Class A water quality standards for fecal coliform and temperature. Point and nonpoint sources contributed to the current major and minor water quality impacts during the low flow period. Simulations performed using QUAL2E and QUAL2E-UNCAS demonstrated some potential impact for future point sources on Snoqualmie River water quality. Major recommendations included actively manage nonpoint sources on the mainstem, set a total phosphorus management guideline of 50 mg/L in the lower river during low flow periods, and monitor ammonia and dissolved oxygen concentrations as river facilities are expanded. |
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This page last updated May 18, 2009
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