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Technique for Estimating the Magnitude and Frequency of Floods in the Houston, Texas, Metropolitan Area

Water-Resources Investigations Report 80-17

Prepared in cooperation with the City of Houston, the Harris County Flood Control District, the Texas Department of Water Resources, and the U.S. Army Corps of Engineers
By:
,

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Abstract

A technique for estimating the magnitude and frequency of floods in the Houston, Tex., metropolitan area was developed by use of a multiple-regression flood-frequency analysis of flow data from unregulated streams in the area. A digital model, relating flood-peak discharge to concurrent rainfall and antecedent soil moisture conditions, was used to simulate 67-year records of annual peak discharges. Flood-frequency characteristics were determined for the simulated annual peaks and for the observed annual peaks at each of 22 gaging-station sites. Relationships applicable to unregulated streams were developed for predicting floods with recurrence intervals of 2, 5, 10, 25, 50, 100, and 500 years. The relationships indicate that as a basin changes from a completely natural state to one of complete urbanization, the magnitude of a 2-year peak discharge is increased by a factor of 4.2, the magnitude of a 50-year peak is increased by a factor of 4.9, and the magnitude of a 100-year peak is increased by a factor of 4.9. (USGS)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Technique for Estimating the Magnitude and Frequency of Floods in the Houston, Texas, Metropolitan Area
Series title:
Water-Resources Investigations Report
Series number:
80-17
Edition:
-
Year Published:
1980
Language:
ENGLISH
Publisher:
Geological Survey (U.S.)
Contributing office(s):
U.S. Geological Survey
Description:
iv, 29 p.