Lakes / Montana / Petrolia Lake
Petrolia Lake, Montana
518 acres
Surface Area
2,899.52 ft
Surface Elevation
Where It Sits, and How Deep It Goes
Locator - Montana
46.94 degrees N, 108.25 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 Petrolia Lake Stacks Up
- About 81 miles from Billings, as the crow flies.
- 15 fish species on the FWP list for this lake.
Fish Species
Brown TroutCommon CarpEmerald ShinerFathead MinnowFlathead ChubLake ChubLongnose DaceNorthern PikeRainbow TroutSand ShinerShorthead RedhorseSpottail ShinerWalleyeWhite SuckerYellow Perch
Species recorded for this lake. Presence only - no abundance ratings.
Facts and Figures
Waterbody ID131213800
CountyPetroleum
Coordinates46.9412, -108.2523
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: Montana Fish, Wildlife & Parks lake data (ID 131213800). Verified October 30, 2026.