Lakes / Idaho / Washington County / Fairchild Reservoir
Fairchild Reservoir, Idaho
96.62 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Idaho
44.47 degrees N, 116.91 degrees W - Washington 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 Fairchild Reservoir Stacks Up
- Larger than 57% of the 316 lakes counted in Idaho.
- About 69 miles from Boise, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Mann Creek Reservoir | Washington | 4.8 mi | 230.3 acres |
| Barton Reservoir | Washington | 10.0 mi | 56.09 acres |
| Brownlee Reservoir | Washington | 12 mi | 12,535.1 acres |
| Little Crane Creek Reservoir | Washington | 14 mi | 35.58 acres |
| Crane Creek Reservoir | Washington | 18 mi | 2,920.79 acres |
| Buttermilk Slough | Washington | 19 mi | 59.8 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Fairchild Reservoir
How Big Is Fairchild Reservoir?
Fairchild Reservoir covers 96.62 acres in Washington County, Idaho.
What Is the Largest Lake in Washington County?
Brownlee Reservoir is the largest lake in Washington County, at 12,535.1 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 38104844). Verified October 30, 2026.