Lakes / Montana / Yellowstone County
Lakes in Yellowstone County, Montana
5 lakes counted in Yellowstone County - the largest is Rattlesnake Reservoir at 183.8 acres.
5
Lakes Counted
183.8 acres
Largest - Rattlesnake Reservoir
Yellowstone County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Rattlesnake Reservoir | Yellowstone | 183.8 acres | - |
| 2 | Lake Elmo | Yellowstone | 62 acres | About 16 ft |
| 3 | Anita Reservoir | Yellowstone | 37 acres | - |
| 4 | Alkali Pond | Yellowstone | 33.8 acres | - |
| 5 | Broadview Pond | Yellowstone | 21 acres | - |
Sources: Montana Fish, Wildlife & Parks lake data; USGS. Verified October 30, 2026.