The graphics depicting Washington state's major hydrography. Selected streams were digitized using Intergraph's IGDS software. Major water features were extracted from the file to portray the state's coastlines and biggest rivers. The coastlines of Washington state's major hydrographical features. Line type distinguishes whether or not lines depict shorelines.
Line is used for offshore polygon closure.
Line depicts shoreline. Distinguishes whether or not the polygon depicts an island or a body of water. Polygon depicts water. The standard distribution compact disc contains all geospatial data sets created by the Washington State Dept. of Transportation. Refer to the included Geodata.txt text file for a brief description of the directory structure.