Streamflow Water Quality in the Georgia Coastal Plain
Hubbard, Robert K.
Sheridan, J. M.
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Studies were conducted in the Georgia Coastal Plain on cropped and forested watersheds ranging in size from 16. 7 km  to 334 km  to determine dissolved solids and suspended sediment concentrations and loads. Observed suspended sediment concentrations in streamflow from these watersheds were quite low, averaging about 15 mg/L. Dissolved solids concentrations were much greater, averaging five times the mean suspended sediment concentration; thus dissolved solids are the primary component of total solids in these stream systems. Suspended sediment concentrations increased with increasing instantaneous discharge rates. Loads of both dissolved solids and suspended sediment were primarily a function of flow volume. Low suspended sediment concentrations and loads in Georgia Coastal Plain streamflow (as compared to streamflow in other physiographic regions) can be attributed to deposition of materials moving from upland areas into the broad, flat, heavily-vegetated, low-gradient drainage systems.