Lakes / Idaho / Bingham County / Big Fill Reservoir
Big Fill Reservoir, Idaho
39.53 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Idaho
43.09 degrees N, 112.77 degrees W - Bingham County. State and county outlines drawn from Census boundary data; the lake marker is placed by its USGS National Hydrography Dataset coordinates, not by eye. Schematic - not a survey map.
How Big Fill Reservoir Stacks Up
- Larger than 24% of the 316 lakes counted in Idaho.
- About 46 miles from Idaho Falls, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| American Falls Reservoir | Power | 12 mi | 55,319.78 acres |
| Jensens Lake | Bingham | 22 mi | 57.82 acres |
| Equalizing Reservoir | Bingham | 25 mi | 230.3 acres |
| Bonanza Lake | Power | 30 mi | 30.64 acres |
| Lake Walcott | Cassia | 41 mi | 11,782.92 acres |
| Chesterfield Reservoir | Caribou | 42 mi | 1,264.44 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Big Fill Reservoir
How Big Is Big Fill Reservoir?
Big Fill Reservoir covers 39.53 acres in Bingham County, Idaho.
What Is the Largest Lake in Bingham County?
Equalizing Reservoir is the largest lake in Bingham County, at 230.3 acres.
Largest Lakes in Idaho
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Pend Oreille | Bonner | 92,764.44 acres | - |
| 2 | American Falls Reservoir | Power | 55,319.78 acres | - |
| 3 | Coeur d'Alene Lake | Kootenai | 26,891.64 acres | - |
| 4 | Lake Cascade | Valley | 25,043.4 acres | - |
| 5 | Priest Lake | Bonner | 23,425.59 acres | - |
All 316 Idaho lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 56465275). Verified October 30, 2026.