Lakes / Montana / Jefferson County
Lakes in Jefferson County, Montana
11 lakes counted in Jefferson County - the largest is Whitetail Reservoir at 603 acres.
11
Lakes Counted
603 acres
Largest - Whitetail Reservoir
Jefferson County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Whitetail Reservoir | Jefferson | 603 acres | - |
| 2 | Delmoe Lake | Jefferson | 279 acres | - |
| 3 | Park Lake | Jefferson | 33 acres | - |
| 4 | Scott Reservoir | Jefferson | 25.7 acres | - |
| 5 | Northern Pacific Reservoir | Jefferson | 16 acres | - |
| 6 | Glenwood Lake | Jefferson | 12 acres | - |
| 7 | Maney Lake | Jefferson | 8 acres | - |
| 8 | Homestake Lake | Jefferson | 8 acres | - |
| 9 | Hidden Lake | Jefferson | 8 acres | - |
| 10 | Leslie Lake | Jefferson | 5 acres | - |
| 11 | Forest Lake | Jefferson | 3 acres | - |
Sources: Montana Fish, Wildlife & Parks lake data; USGS. Verified October 30, 2026.