Lakes / Idaho / Camas County / Summit Reservoir
Summit Reservoir, Idaho
47.94 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Idaho
43.25 degrees N, 114.49 degrees W - Camas 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 Summit Reservoir Stacks Up
- Larger than 34% of the 316 lakes counted in Idaho.
- About 31 miles from Ketchum, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Macon Lake | Camas | 5.0 mi | 26.23 acres |
| Magic Reservoir | Blaine | 6.1 mi | 3,078.58 acres |
| Thorn Creek Reservoir | Camas | 6.4 mi | 116.96 acres |
| Kelly Reservoir | Camas | 7.6 mi | 85.44 acres |
| Spring Creek Reservoir | Camas | 8.1 mi | 44.73 acres |
| McHan Reservoir | Camas | 8.9 mi | 32.87 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Summit Reservoir
How Big Is Summit Reservoir?
Summit Reservoir covers 47.94 acres in Camas County, Idaho.
What Is the Largest Lake in Camas County?
Mormon Reservoir is the largest lake in Camas County, at 1,440.32 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 59647311). Verified October 30, 2026.