Lakes / Idaho / Lemhi County / Ship Island Lake
Ship Island Lake, Idaho
87.23 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Idaho
45.17 degrees N, 114.63 degrees W - Lemhi 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 Ship Island Lake Stacks Up
- Larger than 53% of the 316 lakes counted in Idaho.
- About 103 miles from Ketchum, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Goat Lake | Lemhi | 6.0 mi | 25.45 acres |
| Black Lake | Idaho | 15 mi | 43.74 acres |
| Williams Lake | Lemhi | 33 mi | 181.38 acres |
| Sheepeater Lake | Idaho | 38 mi | 30.64 acres |
| Bear Valley Lakes | Lemhi | 45 mi | 28.15 acres |
| Riordan Lake | Valley | 45 mi | 74.38 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Ship Island Lake
How Big Is Ship Island Lake?
Ship Island Lake covers 87.23 acres in Lemhi County, Idaho.
What Is the Largest Lake in Lemhi County?
Williams Lake is the largest lake in Lemhi County, at 181.38 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 40681132). Verified October 30, 2026.