Lakes / South Dakota / Haakon County / Ottumwa Lake
Ottumwa Lake, South Dakota
50.41 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
44.24 degrees N, 101.34 degrees W - Haakon 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 Ottumwa Lake Stacks Up
- Larger than 16% of the 533 lakes counted in South Dakota.
- About 49 miles from Pierre, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Hayes Lake | Stanley | 18 mi | 51.15 acres |
| Waggoner Lake | Haakon | 19 mi | 81.54 acres |
| Ferguson Dam | Haakon | 26 mi | 34.84 acres |
| Kadoka Lake | Jackson | 31 mi | 116.39 acres |
| Rattlesnake Lake | Ziebach | 37 mi | 77.34 acres |
| Lake Buffalo | Ziebach | 42 mi | 42.01 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Ottumwa Lake
How Big Is Ottumwa Lake?
Ottumwa Lake covers 50.41 acres in Haakon County, South Dakota.
What Is the Largest Lake in Haakon County?
Waggoner Lake is the largest lake in Haakon County, at 81.54 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 128628321). Verified October 30, 2026.