Lewis & Clark Lake

Lewis & Clark Lake is the southernmost and warmest of the great Missouri River reservoirs, a scenic lake on the South Dakota–Nebraska border created by Gavins Point Dam near Yankton, South Dakota. Stretching about 25 miles upstream along the Missouri River, it is the smallest of the main-stem Missouri reservoirs but among the most accessible and popular, with clear, warmer water than the upstream lakes, sandy beaches, and a broad, tree-lined shoreline.

The lake is protected as Lewis & Clark National Recreation Area, administered jointly by the National Park Service and the Corps of Engineers. It is a beloved destination for swimming, boating, fishing, camping and exploring the history of the Lewis and Clark Expedition, which camped along this stretch of the Missouri in 1804. Scenic, warm and accessible, Lewis & Clark Lake is a treasured outdoor gem of southeastern South Dakota.

Summer (June through August) is the peak season, when the water is warm for swimming and boating, all facilities are fully open, and the beaches and campgrounds are active. Spring and fall offer pleasant weather for fishing, hiking and quieter camping, while winter is cold and most facilities close. Early mornings give calm water for fishing and beautiful light on the lake. Summer for swimming and boating, spring for the best walleye and catfish fishing, and fall for quiet camping are the highlights — come during the week in summer to beat weekend crowds at the beaches.

Lewis & Clark Lake and its shorelines attract abundant wildlife — white-tailed deer, wild turkeys, beavers and muskrats along the wooded banks, a rich community of waterfowl (ducks, Canada geese, pelicans and cormorants on the water), bald eagles fishing the lake and nesting nearby, great blue herons, and a diverse fish community including walleye, white bass, catfish and paddlefish. The lake and its wooded Missouri River banks form a rich edge habitat. Lewis & Clark Lake is a superb wildlife destination, with bald eagles, pelicans and herons regularly seen on and over the water.

Missouri River currents below Gavins Point Dam can be swift and dangerous — do not swim or boat near the dam tailwaters. Thunderstorms build quickly over the open lake and surrounding plains in summer; get off the water when lightning threatens. Boating at night requires navigation lights and careful attention (submerged hazards and other boats). Sunburn is intense on the open water. Wear life jackets on the water. Check the aquatic invasive species regulations for watercraft cleaning. Respect the dam tailwaters, the storms, the sun and the need for life jackets on the open river lake.

Lewis & Clark Lake offers swimming from sandy beaches (the warm, clearer water makes it the most popular swimming lake on the Missouri in South Dakota), boating and water-skiing on the 25-mile lake, fishing for walleye, white bass, catfish and paddlefish (a unique species to this stretch of the Missouri), camping at developed recreation areas, hiking trails along the lake and river, wildlife watching, and exploring the Lewis and Clark history of the area. Swimming and boating on the warm lake, fishing for the diverse fish community and camping along the Missouri are the signature draws.

The Missouri River in this area was a significant corridor for the Native peoples of the region, and it was along this stretch that the Lewis and Clark Expedition camped in 1804 on its journey west, naming geographic features and making important natural-history observations; the lake honors that expedition’s legacy. Gavins Point Dam was constructed by the Army Corps of Engineers and completed in 1957, creating the reservoir and the recreation area. Lewis & Clark National Recreation Area preserves this Missouri River resource and its expedition history, a treasured outdoor icon of southeastern South Dakota.

Lewis & Clark Lake fills the wide, tree-lined valley of the Missouri River as it flows along the South Dakota–Nebraska border, with the river cutting through a landscape of glaciated plains and loess hills above the valley. Gavins Point Dam is a concrete gravity dam on the Missouri near Yankton. The relatively clear, warmer water of Lewis & Clark Lake — the first and smallest reservoir in the chain — reflects the shorter residence time of water in this smallest impoundment. The Missouri River valley, the loess hills above and the concrete dam created this scenic, warm-water lake.

Lewis & Clark Lake is the downstream end of the Missouri River’s managed reservoir system — a productive, relatively warm-water lake with a diverse fish community, wooded Missouri River shorelines and riparian habitat supporting waterfowl, eagles and mammals. Water quality and aquatic invasive species (including zebra mussels) are ongoing management concerns. The lake’s warmer water and shorter hydraulic residence time support a different fish and wildlife community than the colder upstream reservoirs. Protecting the lake’s water quality, the riparian shoreline and the fish community sustains both the ecology and the outstanding recreation of Lewis & Clark Lake.

Lewis & Clark Lake holds a treasured place among the outdoor icons of southeastern South Dakota — the warmest and most swimmable of the Missouri River’s Great Plains reservoirs, a beloved beach and boating destination honoring the Lewis and Clark Expedition, set on the scenic Nebraska border where the river and its history meet. The lake and the Expedition history it commemorates embody the spirit of exploration along the Missouri. Lewis & Clark Lake is a cherished outdoor and historical icon of southeastern South Dakota.

Lewis & Clark Lake is in southeastern South Dakota and northeastern Nebraska, accessible from the city of Yankton, South Dakota, off U.S. 81 and State Route 52, about 60 miles southwest of Sioux Falls. The National Park Service and Army Corps of Engineers manage recreation areas on both the South Dakota (Lewis & Clark Recreation Area / Gavins Point) and Nebraska sides. Campgrounds, boat ramps, beaches, trails and the Gavins Point Dam fish hatchery are available. Some campgrounds and day-use areas charge fees. Check the National Park Service and Corps of Engineers for ramps, beaches, fees and conditions before visiting.

The National Park Service and Army Corps of Engineers manage Lewis & Clark Lake and its recreation area. Visitors help by following all fishing regulations (including paddlefish restrictions), preventing the spread of aquatic invasive species (clean watercraft between water bodies), protecting the lake’s water quality (no dumping or pollution), staying on trails and respecting the riparian shoreline, keeping a safe distance from bald eagles and wildlife nests, and packing out all trash. The clear water, the diverse fishery and the riparian habitat are sensitive. Protecting them sustains both the ecology and the excellent recreation of Lewis & Clark Lake.

A South Dakota (or Nebraska, depending on shore) fishing license is required; check paddlefish-specific regulations before targeting that species. Aquatic invasive species prevention rules require cleaning, draining and drying watercraft. Boating safety laws apply (life jackets, registration). Some recreation areas and campgrounds charge fees and require reservations. Do not swim near the dam tailwaters. Follow all NPS and Corps of Engineers rules in the recreation area. Pack out all trash. Check the National Park Service and Corps of Engineers for ramps, fees and current regulations before visiting.

The city of Yankton at the dam, the Gavins Point Dam National Fish Hatchery, the town of Crofton (Nebraska) on the south shore, Niobrara State Park downstream in Nebraska, the Meridian Bridge spanning the Missouri, and the rolling prairies of southeastern South Dakota and northeastern Nebraska lie near the lake. The Missouri River corridor and the Great Plains define the region. Lewis & Clark Lake is the outdoor gem of Yankton and the Missouri River borderland, easily combined with the Gavins Point hatchery, Niobrara State Park and the historic Yankton area.

Come on a weekday in summer for the beaches (weekends are packed), and explore both the South Dakota and Nebraska shores of the lake for different perspectives and recreation areas. Try fishing for paddlefish in the tailwaters below Gavins Point Dam in spring (check the specific regulations), or cast for walleye and white bass from a boat on the lake. Visit the Gavins Point Dam National Fish Hatchery (free) for an interesting look at Missouri River fish. Watch for bald eagles and pelicans on the water. Get your fishing license before you arrive at the lake.