Lake Kampeska, Glacial lake in Watertown, South Dakota, US

Lake Kampeska is a glacial lake in Watertown, South Dakota, with a broad surface of open water and diverse shoreline zones. The body of water connects to the Big Sioux River and offers several coves and areas for exploration.

The area became known through early exploration in the 1800s and once figured into plans for South Dakota's capital location. The region later developed into a hub of settlement and community activity.

The Dakota name Kampeska means "Lake of the Shining Shells." The name is not linked to the Kemp family of Watertown founders. Wildlife artists Terry Redlin, John Greene, John Wilson and Joshua Spies have painted the lake; Redlin fished here as a child and kept a home on the shore until 2007.

The lake provides several access points along its shores for different water activities and recreation. Visitors should be prepared for varying conditions in different areas, especially if planning to boat or fish.

A local sailing club holds annual races that keep maritime traditions alive on the water. Certain coves enforce slower boat speeds to protect the peace for other visitors.