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Open-File Report 2013–1236

Prepared in cooperation with the International Joint Commission

Establishment of a Vertical Control Network along the St. Croix River in New Brunswick and Maine

By Pamela J. Lombard

Thumbnail of and link to report PDF (7.46 MB)Abstract

Consistent elevations at stable benchmarks, referenced to a common datum, are important for measuring and comparing water levels and for computing flows throughout a watershed. Elevations are presented for 38 control points within the St. Croix River watershed, mostly along the main stem of the St. Croix River. Vertical control points are located at 7 dams, 3 Environment Canada (EC) lake monitoring gages, 1 EC streamflow monitoring gage, 2 U.S. Geological Survey (USGS) lake monitoring gages, and 4 USGS streamgages. At least one point at each location was determined through High Precision Global Positioning System observation. Elevations of remaining points were determined through differential leveling. Elevations are referenced to the North American Vertical Datum of 1988, Geoid 09 and to the National Geodetic Vertical Datum of 1929.

First posted November 14, 2013

Revised June 3, 2019

For additional information, contact:
Director, New England Water Science Center
U.S. Geological Survey
331 Commerce Way, Suite 2
Pembroke, NH 03275 http://me.water.usgs.gov

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Suggested citation:

Lombard, P.J., 2013, Establishment of a vertical control network along the St. Croix River in New Brunswick and Maine (ver. 1.1, June 2019): U.S. Geological Survey Open-File Report 2013–1236, 26 p., http://doi.org/10.3133/ofr20131236.

ISSN 2331-1258 (online)



Contents

Abstract

Introduction

Data Collection and Analysis

Summary

References Cited


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