Sylvan Lake (South Dakota)

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Sylvan Lake
Sylvan Lake, SD.jpg
Rock formations near lake
Location Custer County, South Dakota, United States
Coordinates 43°50′44.52″N 103°33′48.57″W / 43.8457000°N 103.5634917°W / 43.8457000; -103.5634917Coordinates: 43°50′44.52″N 103°33′48.57″W / 43.8457000°N 103.5634917°W / 43.8457000; -103.5634917
Primary outflows Sunday Gulch Creek
Basin countries United States
Surface area 17.3 acres (7.0 ha)[1]
Average depth 12.8 feet (3.9 m)[1]
Max. depth 30 feet (9.1 m)[1]
Shore length1 1 mile (1.6 km)
Surface elevation 6,145 feet (1,873 m)[1]
1 Shore length is not a well-defined measure.

Sylvan Lake is a lake located in Custer State Park, in the Black Hills of South Dakota, United States. Created in 1881 when Theodore Reder built a dam (the Sylvan Lake Water Dam) across Sunday Gulch Creek.[2] The lake area offers picnic places, rock climbing, small rental boats, swimming, and hiking trails. It is also popular as a starting point for excursions to Black Elk Peak and The Needles. A hotel was operated on the shore of the lake in the early 20th century .[3]

The lake was featured in Disney's 2007 film National Treasure: Book of Secrets. The film made the lake appear to be located directly behind Mount Rushmore when in reality it is actually five miles southwest of Mount Rushmore.

See also[edit]


  1. ^ Interactive Hotel Solutions. "Sylvan Lake Lodge". Holiday Junction. Retrieved 2008-01-11. 
  2. ^ Postcard,