| Astoria, Oregon 1/3 arc-second MHW Coastal Digital Elevation Model |
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NOAA's National Centers for Environmental Information (NCEI) is building high-resolution
digital elevation models (DEMs) for select U.S. coastal regions. These integrated
bathymetric-topographic DEMs are used to support individual coastal States as part
of the Pacific Marine Environmental Laboratory's (PMEL) efforts to support NOAA's
tsunami forecast system and for tsunami inundation modeling, improve community preparedness
and hazard mitigation. Bathymetric, topographic, and shoreline data used in DEM compilation
are obtained from various sources including: NOAA; the U.S. Geological Survey (USGS);
and other federal, state, and local government agencies, academic institutions, and
private companies. DEMs are referenced to the vertical datum of MHW and horizontal
datum of World Geodetic System 1984 geographic (WGS 84). Grid spacing for the DEM
is 1/3 arc-second (~10 meters). |
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