Lake Murray is a reservoir in the U.S. state of South Carolina. It is approximately 50,000 acres in size, and has roughly 500 miles 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 of South Carolina near the North Carolina state line. The Lake Murray Dam (officially the Dreher Shoals 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 Lake Murray Dam is approximately 1.5 miles long and 220 feet high. Lake Murray is 41 miles long, and 14 miles wide at its widest point. At the time when the lake was finished, it was the world's largest man-made reservoir. .