Polygons representing natural waterway or channel structure locations (such as sediment ponds, litter traps, weirs, spillways, drop structures) and associated details. Includes...

Welcome to Washington state's Freight Transportation System map application! Detailed descriptions are provided below. To get started, press the View Application button in the...

National Inventory of Dams This feature layer, utilizing National Geospatial Data Asset (NGDA) data from the U.S. Army Corps of Engineers (USACE), displays dams within the...