Quartermaster Harbor Marine Water Quality Data Report 2007-2011

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Low dissolved oxygen levels were observed in Quartermaster Harb or starting in 2006 when King County began monthly sampling in the harbor. As a result, the U.S. Environmental Protection Agency (EPA) Region 10 awarded King County a West Coast Estuaries Initiative (WEI) grant in late 2008 to conduct a four‐year Quartermaster Harbor Nitrogen Management Study. The grant was initially funded through 2012, but was subsequently extended through the end of 2013. The goal of this study was to support the protection and restoration of Quartermaster Harbor–a high value, coastal aquatic resource on Vashon‐Maury Island (VMI) in Puget Sound. Partners working with King County (KC) on this study include the University of Washington‐Tacoma (UWT) and the Washington State Department of Ecology (Ecology). This project supports the enhancement of aquatic resource protection in an area threatened by population growth pressures. This report is one of several project reports delivered to EPA as part of the overall study. It describes and presents results from marine water quality monitoring activities conducted in Quartermaster Harbor as part of UWT’s and King County’s marine monitoring programs. Results from 2007 through 2011 are presented in this report. The report is organized into an introduction, a section describing the field and analytical methods (Methods), a section summarizing monitoring results (Results) and a discussion section. Appendices providing a ll water column profile data, time series graphic plots, and phytoplankton data are also included.

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King County Deptartment of Natural Resources & Parks

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