Effects of channel relocation and proposed bridge construction on floodflows of the Catawba River near Marion, North Carolina
Water-Resources Investigations Report
88-4207
By: T. C. Stamey
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Abstract
The relocation of a part (about one-half a mile) of the Catawba River near Marion, North Carolina, and the proposed addition of a main bridge and an overflow bridge of U.S. Highway 221 have created the need for a current evaluation of the effects of these physical changes on floodflow in the river. The 100-year flood discharge, elevation-discharge relations, flood profiles, floodway, and flooding effects were determined for 1988 and for proposed bridge conditions.
Analysis of data indicates that for the 100-year flood, the maximum amount of backwater effect from the proposed bridges would be 1.2 feet, and backwater would extend upstream about 6,800 feet. The 100-year flood elevation in the relocated channel reach will be about 6 feet lower than elevations determined in a 1983 U.S. Soil Conservation Service flood study.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Effects of channel relocation and proposed bridge construction on floodflows of the Catawba River near Marion, North Carolina |
| Series title | Water-Resources Investigations Report |
| Series number | 88-4207 |
| DOI | 10.3133/wri884207 |
| Year Published | 1989 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Contributing office(s) | South Atlantic Water Science Center |
| Description | iii, 16 p. |
| Country | United States |
| State | North Carolina |
| City | Marion |
| Other Geospatial | Catawba River |
| Google Analytic Metrics | Metrics page |