The lake was created in 1963 by the U.S. Army Corps of Engineers by damming the Savannah River and its tributaries, including the Tugaloo and Seneca Rivers. The lake covers over 56,000 acres and has a shoreline of over 960 miles, making it one of the largest lakes in the Southeast. 

Lake Hartwell was created for several purposes, including flood control, hydroelectric power generation, and recreation.

Today, Lake Hartwell is a popular destination for boating, fishing, swimming, camping, and other outdoor activities. The lake is home to several marinas and boat ramps, making it easy for visitors to access the water. Fishing is also a popular activity on the lake, with anglers catching a variety of fish, including bass, catfish, and crappie. 

Lake Hartwell is also home to several parks and recreation areas. The Lake Hartwell State Park in South Carolina offers hiking trails, camping sites, and a swimming beach. Other parks and recreation areas around the lake offer similar amenities. Lake Hartwell State Park and Sadlers Creek State Park are popular destinations for hiking, biking, and camping. 

There are many fun things to do around the Lake Hartwell area, depending on your interests. Lake Hartwell is a popular destination for boating, jet skiing, water skiing, wakeboarding, and tubing. Several marinas and boat rental services are available for visitors. Fishing is a popular activity on the lake, and there are many public access points, boat ramps, and fishing piers available. 

The Lake Hartwell area has several golf courses, including the Chickasaw Point Golf Course, the Stone Creek Cove Golf Course, and the Foxwood Hills Golf Course. 

The nearby towns of Anderson, Clemson, and Seneca offer shopping and dining options. Downtown Anderson has a variety of boutiques, antique shops, and restaurants. The area is also home to several cultural attractions, including the Anderson County Museum, the South Carolina Botanical Garden, and the Brooks Center for the Performing Arts.