Lakes / Idaho / Custer County / Redfish Lake
Redfish Lake, Idaho
1,503.88 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Idaho
44.12 degrees N, 114.93 degrees W - Custer 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 Redfish Lake Stacks Up
- Larger than 91% of the 316 lakes counted in Idaho.
- The largest lake in Custer County among those counted.
- About 41 miles from Ketchum, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Little Redfish Lake | Custer | 3.2 mi | 63.77 acres |
| Baron Lakes | Custer | 5.6 mi | 49.14 acres |
| Goat Lake | Custer | 5.8 mi | 43.24 acres |
| Alpine Lake | Custer | 5.8 mi | 27.54 acres |
| Hell Roaring Lake | Custer | 6.4 mi | 56.59 acres |
| Upper Cramer Lake | Custer | 6.7 mi | 30.39 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Redfish Lake
How Big Is Redfish Lake?
Redfish Lake covers 1,503.88 acres in Custer County, Idaho.
What Is the Largest Lake in Custer County?
Redfish Lake is the largest lake in Custer County, at 1,503.88 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 39264111). Verified October 30, 2026.