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Water-Resources Investigations Report 2000–4064

In cooperation with the Texas Natural Resource Conservation Commission

Regional Equations for Estimating Mean Annual and Mean Seasonal Runoff for Natural Basins in Texas, Base Period 1961–90

By Jennifer Lanning-Rush

Abstract

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Regional equations were developed for estimating mean annual and mean seasonal runoff for natural basins in Texas. The equations, which are based on the statistical relation between streamflow and basin characteristics, use streamflow data and basin characteristics from U.S. Geological Survey streamflow-gaging stations within natural basins and with a least 8 years of data during 1961–90. The State was divided into 11 hydrologic regions on the basis of previous studies. The final equations for estimating mean annual and mean seasonal runoff were developed from 228 streamflow-gaging stations. Contributing drainage area and mean annual or mean seasonal precipitation were determined to be the most significant basin characteristics in each region.

First posted October 26, 2009

For additional information contact:

Director, Texas Water Science Center
U.S. Geological Survey
8027 Exchange Drive
Austin, TX 78754-4733

http://tx.usgs.gov/

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Suggested citation:

Lanning-Rush, Jennifer, 2000, Regional equations for estimating mean annual and mean seasonal runoff for natural basins in Texas, base period 1961–90: U.S. Geological Survey Water-Resouces Investigations Report 2000–4064, 27 p., 1 plate.



Contents

Abstract

Introduction

Streamflow Data

Regional Equations for Estimating Mean Annual and Mean Seasonal Runoff

Selected References

References


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