Lakes / Idaho / Fremont County
Lakes in Fremont County, Idaho
16 lakes counted in Fremont County - the largest is Island Park Reservoir at 7,550.45 acres.
16
Lakes Counted
7,550.45 acres
Largest - Island Park Reservoir
Fremont County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Island Park Reservoir | Fremont | 7,550.45 acres | - |
| 2 | Henrys Lake | Fremont | 6,189.87 acres | - |
| 3 | Ashton Reservoir | Fremont | 286.85 acres | - |
| 4 | Silver Lake | Fremont | 163.34 acres | - |
| 5 | Quayles Lake | Fremont | 149.25 acres | - |
| 6 | Sand Creek Reservoir | Fremont | 79.58 acres | - |
| 7 | Lower Arcadia Reservoir | Fremont | 70.92 acres | - |
| 8 | Beaver Pond | Fremont | 63.26 acres | - |
| 9 | Upper Arcadia Reservoir | Fremont | 42.75 acres | - |
| 10 | Golden Lake | Fremont | 42.5 acres | - |
| 11 | Robinson Lake | Fremont | 41.78 acres | - |
| 12 | Lemon Lake | Fremont | 37.56 acres | - |
| 13 | Horseshoe Lake | Fremont | 36.32 acres | - |
| 14 | Swan Lake | Fremont | 30.89 acres | - |
| 15 | Egin Lakes | Fremont | 29.9 acres | - |
| 16 | Fish Pond | Fremont | 28.17 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.