index USGS Fact Sheet 128-03

In cooperation with the Texas Commission on Environmental Quality

Applying Indicators of Hydrologic Alteration to Texas Streams—Overview of Methods With Examples From the Trinity River Basin

By Richard L. Kiesling

U.S. Geological Survey
Fact Sheet 128–03

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CONTENTS

Overview of Methods

Application of Indicators of Hydrologic Alteration in the Trinity River Basin

Potential for Application of Indicators of Hydrologic Alteration Statewide

References

Figures

1.	Map showing location of USGS streamflow-gaging stations in the Trinity River Basin, Texas
2–5.	Graphs showing:
	2.	Annual 7-day maximum and minimum streamflows for (a) West Fork Trinity River at Grand Prairie, Texas (08049500), water years 1925–2000, (b) Trinity River near Oakwood, Texas (08065000), water years 1924–2000, and (c) East Fork Trinity River near Crandall, Texas (08062000), water years 1950–2000
	3.	Annual frequency of high- and low-flow pulses for (a) West Fork Trinity River near Boyd, Texas (08044500), water years 1947–2000, (b) Trinity River near Oakwood, Texas (08065000), water years 1924–2000, and (c) West Fork Trinity River at Grand Prairie, Texas (08049500), water years 1925–2000
	4.	Average monthly median streamflow for (a) Mountain Creek at Grand Prairie, Texas (08050100), during pre- and post-impoundment of Joe Pool Lake, and (b) for comparison, Colorado River near Ballinger, Texas (08126380), during pre- and post-impoundment of E.V. Spence Reservoir
	5.	Annual frequency of high- and low-flow pulses for Mountain Creek at Grand Prairie, Texas (08050100), during pre- and post-impoundment of Joe Pool Lake

Table

1.	Summary of hydrologic attributes used in the Indicators of Hydrologic Alteration and their characteristics

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U.S. Department of the Interior, U.S. Geological Survey Persistent URL: http://pubsdata.usgs.gov/pubs/fs/fs12803/ Page Contact Information: USGS Publishing Network Last modified: Tuesday, November 29 2016, 06:14:10 PM