Thurston GeoData CenterThurston County Hydro/Stream data originated as coverage file representation of the Thurston County hydro network. It included all waterbodies: rivers, lakes, ponds, inlets and streams. The features were digitized by the Thurston GeoData Center from the Thurston Comap, Assessor's Data dated 1990, and Tiger Files using rubber sheeting and aerial digitizing. In 2002-2003 the data was updated along Marine Shorelines using updated Aerial Photography. In 2011 the hydro coverage file was converted into a feature class file, during which process stream and river data was separated from other waterbodies; large river areas, lakes, ponds, and marine areas. The datasets were renamed to Streams and Waterbodies respectively. In 2014 some minor adjustments were made to both layers in the Lake Lawrence area as the result of LiDAR derived hydro enforced DEM data. Future plans are in place for revisions to the data to more accurately reflect waterbody locations/delineations. Last updated July 20, 2015 kahArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/fb0d71befff84621b814008eb16039bc_0engThurston GeoData CenterPublicThurston Waterbodies [Washington (State)--Thurston County]Web servicesWashington (State)--Thurston CountyWashington (State)Last Modified: 2025-05-05