Lakes / Montana / Wild Horse Lake
Wild Horse Lake, Montana
1,929.1 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Montana
47.18 degrees N, 108.55 degrees W - Petroleum County. State and county outlines drawn from Census boundary data; the lake marker is placed by its Montana Fish, Wildlife & Parks coordinates, not by eye. Schematic - not a survey map.
How Wild Horse Lake Stacks Up
- The largest lake in Petroleum County among those counted.
- About 97 miles from Billings, as the crow flies.
Facts and Figures
Waterbody ID126639564
CountyPetroleum
Coordinates47.1838, -108.5504
Largest Lakes in Montana
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Fort Peck Lake | Valley | 233,053 acres | - |
| 2 | Flathead Lake | Lake | 122,132 acres | About 380 ft |
| 3 | Canyon Ferry Lake | Broadwater | 32,773 acres | About 170 ft |
| 4 | Lake Koocanusa | Lincoln | 28,723 acres | - |
| 5 | Hungry Horse Reservoir | Flathead | 23,577 acres | - |
Sources: USGS NHD lake data (ID 126639564). Verified October 30, 2026.