Lakes / South Dakota / Bon Homme County / Pechous Lake
Pechous Lake, South Dakota
64.38 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
42.95 degrees N, 97.75 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 Pechous Lake Stacks Up
- Larger than 24% of the 533 lakes counted in South Dakota.
- About 66 miles from Sioux Falls, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Kubal Lake | Bon Homme | 3.3 mi | 26.55 acres |
| Hruska Lake | Bon Homme | 3.7 mi | 26.46 acres |
| Kloucek Lake | Bon Homme | 6.5 mi | 64.99 acres |
| Lewis and Clark Lake | Bon Homme | 7.9 mi | 25,141.99 acres |
| Lake Henry | Bon Homme | 13 mi | 43.24 acres |
| Lake Yankton | Yankton | 15 mi | 322.23 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Pechous Lake
How Big Is Pechous Lake?
Pechous Lake covers 64.38 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 {F20519DA-3BE1-408B-84D0-D7F8C3AAD801}). Verified October 30, 2026.