Lakes / Idaho / Custer County / Alpine Lake
Alpine Lake, Custer County, Idaho
27.54 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Idaho
44.06 degrees N, 115.02 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 Alpine Lake Stacks Up
- Larger than 4% of the 316 lakes counted in Idaho.
- About 42 miles from Ketchum, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Baron Lakes | Custer | 1.3 mi | 49.14 acres |
| Upper Cramer Lake | Custer | 3.0 mi | 30.39 acres |
| Hell Roaring Lake | Custer | 5.2 mi | 56.59 acres |
| Redfish Lake | Custer | 5.8 mi | 1,503.88 acres |
| Imogene Lake | Custer | 5.9 mi | 71.66 acres |
| Edna Lake | Custer | 6.7 mi | 56.2 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Alpine Lake
How Big Is Alpine Lake?
Alpine Lake covers 27.54 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 39264364). Verified October 30, 2026.