The coverage data source is the 7.5 Minute Digital Elevation Model (DEM) with 30 meter resolutions obtained from USGS. The map is a multi-colored County-wide relief map which shows elevations shaded at 100 foot contour intervals. It provides an instant visualization of the county's valley and ridge systems as well as high elevations areas. The original DEM data was processed using Arc/Info Grid. The topography map was produced using DEM data.
This coverage was compiled at a scale of 1:24,000. The coverage is intended for general planning purposes only, and may not be appropriate for site specific analysis.
This coverage is in Arc/Info export format. Coordinate System – New York State Plane, FIPS zone: 3101 (Formerly East Zone 4801), Units: Feet, North American Datum 1983. This coverage can be accessed electronically by clicking on the above link, or by visit the Westchester County GIS web site to download this coverage along with additional Westchester County data layers. <http://giswww.westchestergov.com>