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This layer was extracted from the following statewide layer. This line theme contains a spatial representation of the 303(d) list and should be used in conjunction with the actual 303(d) list. The 303(d) list attribute information included in the GIS attributes table is generalized and is described below.

Source: Pacific Northwest (Oregon & Washington) Hydrography Framework, http://hydro.reo.gov/metadata/WatercoursesOregonWashington.htm