Lake Strom Thurmond, officially designated J. Strom Thurmond Reservoir at the federal level, and Clarks Hill Lake by the state of Georgia, is a man-made reservoir at the border between the U.S. states of Georgia and South Carolina in the Savannah River Basin.
The reservoir was created by the J. Strom Thurmond Dam during 1951 and 1952 by the U.S. Army Corps of Engineers near the confluence of the Little River and the Savannah River.
At 71,000 acres (290 km2), it is the third-largest artificial lake east of the Mississippi River, behind the Kentucky Lake on the Tennessee River and Lake Marion on the Santee River. The J. Strom Thurmond Dam is located upstream from Augusta, Georgia.
