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Open-File Report 2013–1233

Seepage Investigations of the Rio Grande from Below Leasburg Dam, Leasburg, New Mexico, to Above American Dam, El Paso, Texas, 2006–13

By D.M. Crilley, A.M. Matherne, Nicole Thomas, and S.E. Falk

Thumbnail of and link to report PDF (1.12 MB)Abstract

Seepage investigations were conducted annually by the U.S. Geological Survey from 1988 to 1998 and from 2004 to 2013 along a 64-mile reach of the Rio Grande from below Leasburg Dam, Leasburg, New Mexico, to above American Dam, El Paso, Texas, as part of the Mesilla Basin monitoring program. Results of studies conducted from 2006 to 2013 are presented in this report. Seepage investigations were conducted over a period of 1–2 days in February of each year, during low-flow conditions in the non-irrigation season. During the seepage investigations, discharge was measured at as many as 24 sites along the Rio Grande and as many as 20 inflow sites within the study reach.

Net seepage gain or loss was computed for each subreach by subtracting the discharge measured at the upstream location from the discharge measured at the closest downstream location along the river and then subtracting any inflow to the river within the subreach. An estimated gain or loss was determined to be significant when it exceeded the cumulative measurement uncertainty associated with the net seepage computation. Study reaches during 2006 to 2013 ranged from 20.2 to 64 miles in length, and seepage losses ranged from 8.2 ± 3.1 to 47.9 ± 8.2 cubic feet per second.

First posted October 25, 2013

For additional information contact:
Director, New Mexico Water Science Center
U.S. Geological Survey
5338 Montgomery Boulevard NE
Albuquerque, New Mexico 87109–1311
http://nm.water.usgs.gov/

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Suggested citation:

Crilley, D.M., Matherne, A.M., Thomas, Nicole, and Falk, S.E., 2013, Seepage investigations of the Rio Grande from below Leasburg Dam, Leasburg, New Mexico, to above American Dam, El Paso, Texas, 2006–13: U.S. Geological Survey Open-File Report 2013–1233, 34 p., http://pubs.usgs.gov/of/2013/1233/.



Contents

Acknowledgments

Abstract

Introduction

Methods

Seepage Investigations of the Rio Grande from Below Leasburg Dam, Leasburg, New Mexico, to Above American Dam, El Paso, Texas, from 2006 to 2013

Summary

References Cited

Appendix 1. Select Field Measurements and Observations, Rio Grande Seepage Investigations, 2006–13


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