Preliminary Sediment Analysis for the Broad River
Author(s)
Radcliffe, David E.
Rasmussen, Todd C.
Advisor(s)
Editor(s)
Hatcher, Kathryn J.
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Abstract
Sediment Total Maximum Daily Loads (TMDLs) have been proposed for segments of the North,
Middle, and South Forks of the Broad River. Our
objectives are to present the sediment data that is available
for the Broad River and to use HSPF to make a
preliminary analysis of sediment sources. Total suspended
solids (TSS) was measured at the USGS gaging station on
the Broad River near Bell from 1958 to 1979 and the mean
TSS concentration was a relatively high value of 75 mg/L.
HSPF was used to predict TSS during the period 1971 to
1979. Land use data was from 1983. Only small
adjustments to default discharge parameters were required
to calibrate HSPF to the observed discharge at Bell. To
calibrate the model for TSS, bed sediment parameters had
to be adjusted including reducing the critical shear stresses
for deposition and scouring and increasing the initial silt
content and depth of bed sediments. These results may
indicate that the source of the high suspended sediment
levels in the Broad River is legacy sediment.
Sponsor
Sponsored and Organized by: U.S. Geological Survey, Georgia Department of Natural Resources, Natural Resources Conservation Service, The University of Georgia, Georgia State University, Georgia Institute of Technology
Date
2001-03
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Resource Type
Text
Resource Subtype
Proceedings