Hiwassee Island, also known as Jollys Island and Benham Island, is located in Meigs County, Tennessee, at the confluence of the Tennessee and Hiwassee Rivers. It is about 35 mi (56 km) northeast of Chattanooga. The island was the second largest land mass on the Tennessee River at 781 acres before the Tennessee Valley Authority created the Chickamauga Lake as a part of the dam system on the Tennessee River in 1940. Much of the island is now submerged, leaving 400 acres above the waterline.