Lakes in Adams County, Idaho
6 lakes counted in Adams County - the largest is Lost Valley Reservoir at 726 acres.
6
Lakes Counted
726 acres
Largest - Lost Valley Reservoir
Adams County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lost Valley Reservoir | Adams | 726 acres | - |
| 2 | Goose Lake | Adams | 378.07 acres | - |
| 3 | Ben Ross Reservoir | Adams | 340.02 acres | - |
| 4 | Brundage Reservoir | Adams | 281.7 acres | - |
| 5 | Twin Lakes | Adams | 39.78 acres | - |
| 6 | Black Lake | Adams | 25.7 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.