Lakes / South Dakota / Tripp County / Roosevelt Lake
Roosevelt Lake, South Dakota
86.5 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
43.20 degrees N, 99.62 degrees W - Tripp 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 Roosevelt Lake Stacks Up
- Larger than 36% of the 533 lakes counted in South Dakota.
- About 88 miles from Pierre, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Lambert Lake | Tripp | 8.1 mi | 59.84 acres |
| Dog Ear Lake | Tripp | 14 mi | 241.02 acres |
| Lake Burch | Gregory | 15 mi | 110.46 acres |
| Little Dog Ear Lake | Tripp | 22 mi | 44.72 acres |
| Indian Lake | Gregory | 26 mi | 36.17 acres |
| Hamill Dam Reservoir | Tripp | 27 mi | 34.1 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Roosevelt Lake
How Big Is Roosevelt Lake?
Roosevelt Lake covers 86.5 acres in Tripp County, South Dakota.
What Is the Largest Lake in Tripp County?
Dog Ear Lake is the largest lake in Tripp County, at 241.02 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 122539585). Verified October 30, 2026.