Lakes / Montana / Daniels County
Lakes in Daniels County, Montana
3 lakes counted in Daniels County - the largest is Si Merrell Slough at 142 acres.
3
Lakes Counted
142 acres
Largest - Si Merrell Slough
Daniels County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Si Merrell Slough | Daniels | 142 acres | - |
| 2 | Killenbeck Reservoir | Daniels | 34 acres | - |
| 3 | Whitetail Reservoir | Daniels | 25 acres | - |
Sources: Montana Fish, Wildlife & Parks lake data; USGS. Verified October 30, 2026.