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2008 303(d) Impaired and Threatened Water Body Maps

By Water Resource Inventory Area

(select by clicking a map area)

Map Information:

In accordance with Section 303(d) of the federal Clean Water Act, every two years each state must identify its polluted water bodies and submit this list to EPA. Our maps show where in Washington State these estuaries, lakes, and streams are located.

Digital 303(d) GIS data is available for download on this website at:  GIS Data page

For more information on the 303(d) program, check out Ecology's Water Quality website and/or contacts webpage.

NOTE:  Ecology also has an interactive web application to view 303(d) listed water bodies in your web browser (Internet Explorer only).

Other WRIA Map Series

Flood Land Cover Latitude/Longitude Major Public Lands
Population Density SaSI Topography Township/Range/Section

Back to WRIA Maps Page

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Page updated:  Tuesday, July 09, 2013. Questions or Comments about this page? Contact Liz O'Dea at