Lakes / Montana / Sheridan County
Lakes in Sheridan County, Montana
24 lakes counted in Sheridan County - the largest is Medicine Lake at 8,931 acres.
24
Lakes Counted
8,931 acres
Largest - Medicine Lake
Sheridan County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Medicine Lake | Sheridan | 8,931 acres | - |
| 2 | Capeneys Lake | Sheridan | 722.5 acres | - |
| 3 | Goose Lake | Sheridan | 655.8 acres | - |
| 4 | Dominek Lake | Sheridan | 350.9 acres | - |
| 5 | Salt Lake | Sheridan | 350.8 acres | - |
| 6 | Tadpole Lake | Sheridan | 345.8 acres | - |
| 7 | Katy Lake | Sheridan | 322 acres | - |
| 8 | Clear Lake | Sheridan | 283 acres | - |
| 9 | Brush Lake | Sheridan | 252.8 acres | - |
| 10 | Flat Lake | Sheridan | 204 acres | - |
| 11 | Goose Lake | Sheridan | 189.2 acres | - |
| 12 | North Lake | Sheridan | 157.2 acres | - |
| 13 | Long Lake | Sheridan | 145 acres | - |
| 14 | Widgeon Slough | Sheridan | 124.8 acres | - |
| 15 | Park Lake | Sheridan | 110.7 acres | - |
| 16 | Johnson Lake | Sheridan | 93.7 acres | - |
| 17 | Larson Slough | Sheridan | 93.4 acres | - |
| 18 | Syme Slough | Sheridan | 91.7 acres | - |
| 19 | Brightsmen Lake | Sheridan | 80.1 acres | - |
| 20 | Boxelder Lake | Sheridan | 77 acres | About 18 ft |
| 21 | Gaulke Lake | Sheridan | 37.6 acres | - |
| 22 | Lochin Slough | Sheridan | 33.6 acres | - |
| 23 | Lone Tree Lake | Sheridan | 33.4 acres | - |
| 24 | Comers Lake | Sheridan | 25 acres | - |
Sources: Montana Fish, Wildlife & Parks lake data; USGS. Verified October 30, 2026.