About This Report

The development of a fish index of biotic integrity (FIBI) for the greater Lake Washington watershed was undertaken as part of the weight-of-evidence component of an ecological risk assessment for the Sammamish-Washington Analysis and Monitoring Program (SWAMP). This larger project includes a classic chemical risk assessment as well as a weight-of-evidence approach (WOE). The WOE attempts to use existing data to assess the quality of stream, river, and lake conditions in the subbasins of the greater Lake Washington watershed. This approach seeks to combine chemical, physical, and biological signals to determine the relative effects of human disturbance on the quality of aquatic systems. Development of a potential FIBI for this study area was undertaken as part of the biological component of the WOE in addition to the use of a benthic index of biotic integrity (BIBI).

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View the Fish Index Report.