Lakes / South Dakota / Day County / Little Rush Lake
Little Rush Lake, South Dakota
495.94 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
45.33 degrees N, 97.33 degrees W - Day 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 Little Rush Lake Stacks Up
- Larger than 81% of the 533 lakes counted in South Dakota.
- About 32 miles from Watertown, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Blue Dog Lake | Day | 2.1 mi | 1,495.48 acres |
| Rush Lake | Day | 2.1 mi | 1,462.86 acres |
| Headman Slough | Day | 3.8 mi | 91.92 acres |
| Bitter Lake | Day | 4.2 mi | 7,865.28 acres |
| Minnewasta Lake | Day | 4.3 mi | 609.61 acres |
| Dahling Slough | Day | 5.0 mi | 94.15 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Little Rush Lake
How Big Is Little Rush Lake?
Little Rush Lake covers 495.94 acres in Day County, South Dakota.
What Is the Largest Lake in Day County?
Bitter Lake is the largest lake in Day County, at 7,865.28 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 145090531). Verified October 30, 2026.