US Army Corps of Engineers · South Dakota
Straddling the Nebraska/South Dakota border, Gavins Point Dam, SD is the smallest of the six Missouri River main stem dams and the southernmost dam on the river. Lewis and Clark Lake, named for the first documented explorers of the Louisiana Territory, is 25 miles long, has 90 miles of shoreline, and 27 recreation areas offering camping, picnicking, fishing, hunting, boating, water-skiing, swimming, bird-watching, hiking, photography, and biking opportunities.
Reservations for Lewis and Clark Lake are made through Recreation.gov. In peak season, the most popular campgrounds are typically claimed within minutes of each release — which is why the park reads as "sold out" for most of the year.
Sold out is not final, though. People book far ahead and plans change, so cancellations return to the official calendar throughout the season — with no announcement, at any hour. A cancelled site is bookable by whoever sees it first.
| Managed by | US Army Corps of Engineers |
|---|---|
| Book through | Recreation.gov |
| Location | Yankton, SD |
| Campgrounds | 4 |
| Official listing | Recreation.gov |
Set a watch on the whole park, or go straight to the campground you want — each one has its own availability and cancellation pattern:
| Cottonwood (Ne) | 77 sites |
|---|---|
| Nebraska Tailwaters | 37 sites |
| Cottonwood (NE) Day Use Shelter | 1 sites |
| Gavins Point Overlook Day Use Shelter | 1 sites |
We scan the official Recreation.gov calendar for Lewis and Clark Lake around the clock. The second a site that matches your dates and equipment opens up, you get a text with a direct link to that exact site. You book it yourself, in your own account, at the normal price. We never book, hold, or resell anything — monitoring is all we do, and it's what your fee pays for. Openings are first-come, so a text beats an email every time.
Page data refreshed 2026-10-29. Availability facts come from the official directory listing for Lewis and Clark Lake; cancellation statistics come from our own scanning logs.