thumbnail

Annual peak streamflow and ancillary data for small watersheds in central and western Texas

Fact Sheet 2011-3082

Prepared in cooperation with the Texas Department of Transportation
By:
and

Links

Abstract

Estimates of annual peak-streamflow frequency are needed for flood-plain management, assessment of flood risk, and design of structures, such as roads, bridges, culverts, dams, and levees. Regional regression equations have been developed and are used extensively to estimate annual peak-streamflow frequency for ungaged sites in natural (unregulated and rural or nonurbanized) watersheds in Texas (Asquith and Slade, 1997; Asquith and Thompson, 2008; Asquith and Roussel, 2009). The most recent regional regression equations were developed by using data from 638 Texas streamflow-gaging stations throughout the State with eight or more years of data by using drainage area, channel slope, and mean annual precipitation as predictor variables (Asquith and Roussel, 2009). However, because of a lack of sufficient historical streamflow data from small, rural watersheds in certain parts of the State (central and western), substantial uncertainity exists when using the regional regression equations for the purpose of estimating annual peak-streamflow frequency.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Annual peak streamflow and ancillary data for small watersheds in central and western Texas
Series title:
Fact Sheet
Series number:
2011-3082
Year Published:
2011
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Texas Water Science Center
Description:
4 p.
State:
Texas