Description of a Hydrologic Method for Separating Stream Flow from Groundwater and Backwater by Means of Oxygen-18, Savannah River Plant, South Carolina
Hardegree, Wesley Sigman
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The wetland ecology of Upper Three Runs Creek (UTR),located within the Savannah River Plant (SRP), South Carolina, has been intensively studied by researchers from the Savannah River Ecology Laboratory (SREL). Their studies have revealed the importance of understanding the wetland hydrology of this riverine wetlands system of UTR and the Savannah River. The study's method described here, initiated in October, 1988, is designed to answer some of these hydrologic questions. Specifically, the study will 1) evaluate the relationship between stream flow in UTR and subsurfaceflow in the adjacent wetland, 2) evaluate the extent of recycling of UTR water in the wetland during overbank flood events, 3) evaluate the oxygen isotope value of UTR baseflow, and 4) evaluate the extent of Savannah River backwater flow into UTR during large flood events.