Lakes / South Dakota / Bon Homme County / Lewis and Clark Lake
Lewis and Clark Lake, South Dakota
25,141.99 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
42.85 degrees N, 97.68 degrees W - Bon Homme 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 Lewis and Clark Lake Stacks Up
- Ranks #4 for surface area among the South Dakota lakes counted so far - 25,141.99 acres.
- The largest lake in Bon Homme County among those counted.
- About 68 miles from Sioux Falls, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Hruska Lake | Bon Homme | 6.4 mi | 26.46 acres |
| Pechous Lake | Bon Homme | 7.9 mi | 64.38 acres |
| Kubal Lake | Bon Homme | 9.6 mi | 26.55 acres |
| Lake Yankton | Yankton | 10 mi | 322.23 acres |
| Kloucek Lake | Bon Homme | 13 mi | 64.99 acres |
| Beaver Lake | Yankton | 16 mi | 125.78 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Lewis and Clark Lake
How Big Is Lewis and Clark Lake?
Lewis and Clark Lake covers 25,141.99 acres in Bon Homme County, South Dakota.
What Is the Largest Lake in Bon Homme County?
Lewis and Clark Lake is the largest lake in Bon Homme County, at 25,141.99 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 128466045). Verified October 30, 2026.