It also forms a northern boundary for numerous species found on the SRS and is a zone of intergradation for many others. The entire SRS site lies within the Atlantic Coastal Plain Physiographic Province. The SRS acreage includes several major soil types, most composed of sand overlying sandy loam clay. The summer climate of South Carolina is generally hot and humid, and winters are usually mild. Normal January temperatures for the upper coastal plain region, including the SRS, are lows near freezing and highs around 13 C. Normal July temperatures are lows around 21 C and highs around 32 C. Normal yearly precipitation is 91-112 cm, primarily as rainfall.
Snow is uncommon.
Guide to the Reptiles and Amphibians of the Savannah River Site. The University of Georgia Press, Athens. The SRS is located in the west-central portion of South Carolina and encompasses portions of Aiken, Barnwell, and Allendale counties. The site's southwest boundary is the Savannah River, a very large southern river with extensive floodplains and oxbow lakes. The northern boundary is approximately 32-48 km south of the Fall Line.