Lakes / South Dakota / Yankton County / Beaver Lake
Beaver Lake, Yankton County, South Dakota
125.78 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
43.02 degrees N, 97.45 degrees W - Yankton County. State and county outlines drawn from Census boundary data; the lake marker is placed by its USGS National Hydrography Dataset coordinates, not by eye. Schematic - not a survey map.
How Beaver Lake Stacks Up
- Larger than 50% of the 533 lakes counted in South Dakota.
- About 51 miles from Sioux Falls, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Marindahl Lake | Yankton | 9.7 mi | 106.5 acres |
| Lake Yankton | Yankton | 11 mi | 322.23 acres |
| Kloucek Lake | Bon Homme | 12 mi | 64.99 acres |
| Hruska Lake | Bon Homme | 13 mi | 26.46 acres |
| Kubal Lake | Bon Homme | 13 mi | 26.55 acres |
| Lake Henry | Bon Homme | 16 mi | 43.24 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Beaver Lake
How Big Is Beaver Lake?
Beaver Lake covers 125.78 acres in Yankton County, South Dakota.
What Is the Largest Lake in Yankton County?
Lake Yankton is the largest lake in Yankton County, at 322.23 acres.
Largest Lakes in South Dakota
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Oahe | Dewey | 309,912.57 acres | - |
| 2 | Lake Francis Case | Charles Mix | 82,166.92 acres | - |
| 3 | Lake Sharpe | Hughes | 58,419.67 acres | - |
| 4 | Lewis and Clark Lake | Bon Homme | 25,141.99 acres | - |
| 5 | Lake Thompson | Kingsbury | 13,887.93 acres | - |
All 533 South Dakota lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 125116353). Verified October 30, 2026.