3-meter contours created from Digital Terrain Model (DTM) data points collected during the production of 1:5,000 Black and White Digital Orthophoto images
Process_Date: before August 2001
Information relevant to the GIS data encoding
Ipswich watershed slope derived from DEMHorizontal Coordinate System Name:NAD 1983 StatePlane Massachusetts Mainland FIPS 2001
Datum: D North American 1983
Reference Ellipsoid: Name: GRS 1980 Semi Axis: 6378137.0
Meridian: Greenwich
Projection Name : Lambert Conformal Conic
Number of bands : 1
Raster Origin : Lower Left
Rows : 1152
Columns : 1692
Cell Geometry :pixel