ORWA98_750UTM: Oregon/Washington 750 meter, 1926/1998 Bathymetry Grid; UTM Projection

ORWA98_750UTM is a digital bathymetric surface grid of the seafloor off
the coast of Washington and 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 1974 (primarily 1926
to 1930) with recent surveys conducted by the U.S. Army Corps of Engineers
(USACE) in 1998 around the entrances to Grays Harbor, Willapa Bay, and the
Columbia River. The results of this work represent the best available
estimate of the seafloor morphology for the time period circa 1998. The
user is cautioned, however, to use this data set with full knowledge of
the original intent, the limitations, and assumptions used to generate it.