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Digital Geodata Series
DGS98-1 Monochromatic Bit-Mapped Image of New Jersey Planimetric Base Map (1:500,000 scale)

METADATA DOWNLOAD dgs98-1.zip (211KB)

Abstract

A bit-mapped image of the U.S. Geological Survey 1:500,000 scale, planimetric base map for New Jersey has been compiled by the N.J. Geological Survey. The monochromatic image was scanned at 400 dots-per-inch resolution from a stable-base, mylar map. The image was georegistered and rectified to the 1983 North American Datum (NAD83) in State plane coordinate feet using the ARC/INFO Geographic Information System. The registration process used four links corresponding to 1-degree intersection points from a geographic grid covering New Jersey. The image was processed after registration to increase the clarity of the image. Post-processing steps included: 1) removing line boundaries for built-up town areas over 10,000 population; 2) removing population integer codes corresponding to lines specified in the previous item; and 3) removing the 1 degree geographic grid lines. The bit map uses an uncompressed tagged image file format(TIFF). Image registration parameters are included in an accompanying ASCII text file.

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Department of Environmental Protection
Geological and Water Survey
P. O. Box 420
Mail Code:29-01
Trenton, NJ 08625-0420

Phone: (609) 292-1185
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