20210303 14563700 1.0 TRUE NHD Streams and Rivers Portland This layer replicates DSL's NHD Streams and Rivers layer for the SWI. DSL describes the layer as the following: For the purpose of the Statewide Wetlands Inventory, DSL has filtered the NHD Line data to display only the Stream/River and Canal/Ditch line features, FType codes equal to "336" and "460". This data can be found at https://www.usgs.gov/core-science-systems/ngp/national-hydrography/access-national-hydrography-products. Prepared by the Portland Bureau of Environmental Services Wetland Inventory Project using USGS NHD data accessed on January 14, 2020. https://www.usgs.gov/core-science-systems/ngp/national-hydrography/access-national-hydrography-products. See dataset specific metadata for original credits.