NGS Benchmark Elevations:
National Coast and Geodetic Survey tablet elavations; typically found in coastal areas; data sheets, DSDATA
USGS Benchmark Elevations:
USGS tablet elevations (email to technician in charge of paper files). Include identification number on bronze tablet, State, County, and topographic map name.
U.S. Department of the Interior, U.S. Geological Survey
Maintainer: New York District URL: http://ny.water.usgs.gov/htmls/pub/benchmarks.html
Last update: 11:04:28 Thursday 10 January 2013
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