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Study to determine discharge at 50-percent flow duration and ordinary high water for streams in Louisiana

Open-File Report 78-218

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Abstract

Techniques are presented for estimating the discharge at 50-percent duration and ' ordinary high water ' on ungaged streams in Louisiana that have drainage areas of less than 3,000 square miles. Discharge data from 91 gaging stations were used in developing the techniques. The discharge at 50-percent duration can be estimated if the drainage area size and mean annual precipitation are known. The ' ordinary high water ' can be estimated if the drainage-area size, mean annual precipitation, channel cross section, channel slope, and Manning 's roughness value are known. (Woodard-USGS)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Study to determine discharge at 50-percent flow duration and ordinary high water for streams in Louisiana
Series title:
Open-File Report
Series number:
78-218
Edition:
-
Year Published:
1978
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
iii, 21 p. :maps ;27 cm.