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Backwater at bridges and densely wooded flood plains, Thompson Creek near Clara, Mississippi

Hydrologic Atlas 597

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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 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 Thompson Creek near Clara, MS: Water depths, velocities, and discharges through bridge openings on Thompson Creek near Clara, MS, for flood of March 3, 1971, are shown, 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 a graph. (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, Thompson Creek near Clara, Mississippi
Series title:
Hydrologic Atlas
Series number:
597
Edition:
-
Year Published:
1979
Language:
ENGLISH
Description:
2 maps :col. ;on 2 sheets 70 x 108 cm. and 49 x 104 cm.
Scale:
24000