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Open-File Report 81-1104

Manual for Leveling at Gaging Stations in North Carolina

By N.0. Thomas and N.M. Jackson, Jr.

Abstract

This manual was prepared to serve several purposes in the North Carolina District. It sets forth District policy as to frequency of levels, accuracy criteria, procedures for checking the datum and setting of the various types of gages, general rules to follow in establishing the original datum of a gage, and contains sample notes to be used as guides in level notekeeping. The manual also serves as a training tool in that the reasoning behind District policy is explained and reasons are given for following the recommended techniques to assist in a better understanding of the purpose of levels and maintaining gage datum.

Posted May 2010

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Suggested citation:

Thomas, N.O., and Jackson, N.M. Jr., 1992, Manual for leveling at gaging stations in North Carolina: U.S. Geological Survey Open-File Report 81-1104, 21 p. (Also available at http://pubs.usgs.gov/of/1981/ofr81-1104/.)



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