Study to determine discharge at 50-percent flow duration and ordinary high water for streams in Louisiana
Open-File Report
78-218
Prepared in cooperation with the Louisiana Department of Transportation and Development, Office of Highways
By: Braxtel L. Neely Jr.
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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.
Study Area
| 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 |
| DOI | 10.3133/ofr78218 |
| Year Published | 1978 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Description | iii, 21 p. |
| Country | United States |
| State | Louisiana |
| Google Analytic Metrics | Metrics page |