SWWA98_750UTM: Southwest Washington, 750 meter,1926/1998 Bathymetry Grid; UTM Projection

SWWA98_750UTM is a digital bathymetric surface grid of the seafloor offthe coast of Southwest Washington and Northwest Oregon.Grid cell spacing is 750m and the projection is UTM Zone 10.The surface grid was produced by merging National Ocean Service (NOS)Hydrographic Surveys conducted between 1926 and 1927 with recentsurveys conducted by the U.S. Army Corps of Engineers (USACE) in 1998around the entrances to Grays Harbor, Willapa Bay, and the ColumbiaRiver. The results of this work represent the best available estimate ofthe seafloor morphology for the time period circa 1998. The user iscautioned, however, to use this data set with full knowledge of theoriginal intent, the limitations, and assumptions used to generate it.