Lake Murray is a reservoir in the U.S. state of South Carolina. It is approximately 50,000 acres in size, and has roughly 650 mi of shoreline. It was impounded in the late 1920s to provide hydroelectric power to the state of South Carolina. Lake Murray is fed by the Saluda River, which flows from upstate South Carolina near the North Carolina state line. The Saluda Dam was an engineering feat at the time of its construction. The dam, using the native red clay soil and bedrock, was the largest earthen dam in the world when it was completed in 1930. Lake Murray itself is named after the project's chief engineer, William S. Murray. The Saluda Dam is approximately 1.5 miles (2.4 km) long and 220 feet (67 m) high. Lake Murray is 41 miles (66 km) long, and 14 miles (23 km) wide at its widest point. At the time when the lake was finished, it was the world's largest man-made reservoir.

The Saluda River is a principal tributary of the Congaree River, about 200 mi (320 km) long, in northern and western South Carolina in the United States. Via the Congaree River, it is part of the watershed of the Santee River, which flows to the Atlantic Ocean.