Lakes / South Dakota / McPherson County / Eureka Lake
Eureka Lake, South Dakota
188.54 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
45.77 degrees N, 99.64 degrees W - McPherson 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 Eureka Lake Stacks Up
- Larger than 62% of the 533 lakes counted in South Dakota.
- About 60 miles from Aberdeen, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Hausauer Lake | McPherson | 5.8 mi | 76.6 acres |
| Feinstein Lake | McPherson | 6.6 mi | 152.46 acres |
| Heupel Lake | McPherson | 7.7 mi | 45.71 acres |
| East Flat Lake | Campbell | 9.6 mi | 151.72 acres |
| Flat Lake | Campbell | 9.6 mi | 113.17 acres |
| Bowdle-Hosmer Lake | Edmunds | 13 mi | 129.73 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Eureka Lake
How Big Is Eureka Lake?
Eureka Lake covers 188.54 acres in McPherson County, South Dakota.
What Is the Largest Lake in McPherson County?
Long Lake is the largest lake in McPherson County, at 364.48 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 147893908). Verified October 30, 2026.