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Backwater at bridges and densely wooded flood plains, Tallahala Creek at Waldrup, Mississippi

Hydrologic Atlas 590

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Abstract

Floodflow data that will provide a base for evaluating digital models relating to open-channel flow were obtained at 22 sites on streams in Alabama, Louisiana, and Mississippi. Thirty-five floods were measured. Analysis of the data indicated that backwater and discharges computed by standard indirect methods currently in use would be inaccurate where densely vegetated flood plains are crossed by highway embankments and single-opening bridges. This atlas presents flood information at the site on Tallahala Creek at Waldrup, Miss. Water depths, velocities, and discharges through bridge openings on Tallahala Creek at Waldrup, Miss., for floods of April 14, 1969, February 21, 1971, and April 13, 1974, were measured together with peak water surface elevations along embankments and along cross sections. Manning 's roughness coefficient values in different parts of the flood plain are shown on maps, and flood-frequency relations are shown on graphs. (Woodard-USGS)

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Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Backwater at bridges and densely wooded flood plains, Tallahala Creek at Waldrup, Mississippi
Series title:
Hydrologic Atlas
Series number:
590
Year Published:
1978
Language:
English
Publisher:
U.S. Geological Survey
Description:
Plate 3a: 43.28 inches x 31.06 inches; Plate 3b: 43.34 inches x 31.96 inches; Plate 2a: 43.39 inches x 32.17 inches; Plate 4a: 43.73 inches x 32.54 inches ; Plate 4b: 43.59 inches x 32.77 inches; Plate 5a: 43.32 inches x 32.42 inches; Plate 1: 37.70 inches x 37.30 inches; Plate 2b: 42.62 inches x 32.67 inches
Scale:
4000
Additional Online Files(Y/N):
Y