Technique for estimating magnitude and frequency of floods in Virginia

Water-Resources Investigations Report 78-5
Prepared in cooperation with the Virginia Department of Highways and Transportation and U.S. Department of Transportation Federal Highway Administration



A technique is presented for estimating the magnitude and frequency of floods in Virginia. For 299 gaged sites, the magnitudes of floods having recurrence intervals of 2 to 100 years are provided in tables. For ungaged sites, regression relations are presented that allow the estimation of flood magnitudes based on upstream drainage area, average main-channel slope, and a factor to account for regional variations in basin terrain characteristics that would bias the results. A summary of maximum known peak discharges are presented for 363 sites together with the relationship of drainage-area size to flow in cubic feet per second per square mile. Also given is table of 10 basin characteristics for 403 gaging stations.

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Technique for estimating magnitude and frequency of floods in Virginia
Series title Water-Resources Investigations Report
Series number 78-5
DOI 10.3133/wri785
Year Published 1978
Language English
Publisher U.S. Geological Survey
Description Report: v, 83 p.; 2 Plates: 31.48 x 15.90 inches and 31.73 x 16.15 inches
Country United States
State Virginia
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