Data from Washington State Department of Ecology. Downloaded from web page http://www.ecy.wa.gov/services/gis/data/data.htm on 3/28/2016.This GIS layer contains bathymetric contours of selected freshwater lakes in Grant County, Washington during the mid-seventies.The bathymetric contours were digitized from maps contained in a series of seven documents: Reconnaissance Data on Lakes in Washington, Water-Supply Bulletin 43, Volume 1 through 7 by the United States Geological Surveyin cooperation with the Washington State Department of Ecology.
Grant County, Washington (2018). Bathymetry Lakes [Washington (State)--Grant County]. . https://data-grantcountywa.opendata.arcgis.com/maps/GrantCountyWA::bathymetry-lakes (web service)