2006 Annual Report for the City of Mercer Island

Water Quality Monitoring in Five Drainage Basins: 6, 10, 26, 32b, and 42

Cover of Mercer Island Water Quality Report, 2006 Beginning in 1999, the City of Mercer Island contracted with King County Water and Land Resources Division (WLRD) to provide stormwater monitoring in select Mercer Island drainages. The purpose of this study was to assess the effectiveness of drainage basin improvements, as well as support the City?s application for a municipal stormwater National Pollutant Discharge Elimination System (NPDES) permit.

Stormwater, sediment, and macroinvertebrate samples were collected from five Mercer Island drainage basins (Nos. 6, 10, 26, 32b, 42) in 2006. Basins were separated into two groups (commercial or residential) to link water quality characteristics with dominant land use. Water and sediment quality measurements were compared to the most relevant water quality standards and sediment guidelines, or placed in regional context when criteria were not available. This report summarizes results from 2006, examines the efficacy of basin improvements, makes regional stream comparisons to assess relative stormwater quality, and looks for interannual trends and/or localized water quality concerns.

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View the 2006 Annual Report for the City of Mercer Island (1 mb)

Stream Monitoring Program Program History Water Quality Monitoring Location Map Water Quality Monitoring Location List Water Quality Trends Water Quality Index Sediment Monitoring Report Library Glossary For questions about the King County Streams Monitoring Program, please contact Deborah Lester, Program Manager For questions about the Swimming Beach Web site, please contact Daniel Smith	KING COUNTY HOME \| NEWS \| SERVICES \| DIRECTORY \| CONTACT Stream and River Water Quality Monitoring King County Water and Land Resources Division You're in: 2006 Annual Report for the City of Mercer Island Water Quality Monitoring in Five Drainage Basins: 6, 10, 26, 32b, and 42 Beginning in 1999, the City of Mercer Island contracted with King County Water and Land Resources Division (WLRD) to provide stormwater monitoring in select Mercer Island drainages. The purpose of this study was to assess the effectiveness of drainage basin improvements, as well as support the City?s application for a municipal stormwater National Pollutant Discharge Elimination System (NPDES) permit. Stormwater, sediment, and macroinvertebrate samples were collected from five Mercer Island drainage basins (Nos. 6, 10, 26, 32b, 42) in 2006. Basins were separated into two groups (commercial or residential) to link water quality characteristics with dominant land use. Water and sediment quality measurements were compared to the most relevant water quality standards and sediment guidelines, or placed in regional context when criteria were not available. This report summarizes results from 2006, examines the efficacy of basin improvements, makes regional stream comparisons to assess relative stormwater quality, and looks for interannual trends and/or localized water quality concerns. Viewing the report This report is provided in Adobe PDF format. You will need Adobe Acrobat to view the document. If you do not have this software, you can download a free copy of Adobe© Acrobat© Reader View the 2006 Annual Report for the City of Mercer Island (1 mb)
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	Updated: 10/7/2009