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Federal
Stratum polygons and survey transects for the the Central and Western Canadian Arctic Breeding Waterfowl Experimental Aerial Survey, 2005-2011
Department of the Interior —
Stratum boundaries shapefile for the Central and Western Canadian Arctic Aerial Breeding Waterfowl Survey. Also included is a shapefile of the survey transects and a... -
Federal
Topography, NOAA Coastal Relief Model, 3 arc second, Vol. 4 (Central Gulf of Mexico)
National Oceanic and Atmospheric Administration, Department of Commerce —
This Coastal Relief Gridded database provides the first comprehensive view of the US Coastal Zone; one that extends from the coastal state boundaries to as far...