The Chenega DEM covers the community of Chenega, Alaska within Prince William Sound. The DEM has an 8/15 arc-second (~15 meter) cell size, and is referenced to a vertical datum of mean higher high water. It was built in January 2011 for the National Tsunami Hazard Mitigation Program in support of the State of Alaska's tsunami inundation modeling efforts.
|Region||Gulf of Alaska|
|Horizontal Datum||WGS 84|
|Vertical Datum||MHHW (meters)|
|Vertical Transformation||Source elevation data transformed using conversion grids built by NGDC using vertical datum relationships measured at NOAA tide stations.|
|Cell Size||8/15 arc-second|
|Source||NOAA / NGDC / MGG|
|Developer||NOAA / NGDC / MGG|
|Contact||Barry W Eakins @ NOAA / NGDC|
WARNING: DEM not to be used for navigation.