The Port Townsend DEM spans the Juan De Fuca Strait, Puget Sound, San Juan Islands, and Vancouver Island. It includes the community of Port Townsend that is located 40 miles northwest of Seattle, on the tip of the Olympic Peninsula. The DEM has a 1/3 arc-second (~10 meter) cell size, and is referenced to a vertical datum of mean high water. It was built in February 2011 to support NOAA's Tsunami Program.
|Horizontal Datum||WGS 84|
|Vertical Datum||MHW (meters)|
|Vertical Transformation||Source elevation data transformed using NOAA's VDatum vertical transformation tool -- http://vdatum.noaa.gov/|
|Cell Size||1/3 arc-second|
|Source||NOAA / NGDC / MGG|
|Developer||NOAA / NGDC / MGG|
|Project||NOAA Tsunami Inundation|
|Contact||Barry W Eakins @ NOAA / NGDC|
WARNING: DEM not to be used for navigation.