Lakes / Idaho / Franklin County / Strongarm Reservoir Number One
Strongarm Reservoir Number One, Idaho
150.98 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Idaho
42.24 degrees N, 111.85 degrees W - Franklin 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 Strongarm Reservoir Number One Stacks Up
- Larger than 67% of the 316 lakes counted in Idaho.
- About 87 miles from Idaho Falls, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Condie Reservoir | Franklin | 2.1 mi | 86.24 acres |
| Winder Reservoir | Franklin | 4.3 mi | 76.94 acres |
| Twin Lakes Reservoir | Franklin | 6.8 mi | 439.35 acres |
| Oneida Narrows Reservoir | Franklin | 7.4 mi | 429.96 acres |
| Glendale Reservoir | Franklin | 7.7 mi | 207.57 acres |
| Foster Reservoir | Franklin | 7.8 mi | 66.22 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Strongarm Reservoir Number One
How Big Is Strongarm Reservoir Number One?
Strongarm Reservoir Number One covers 150.98 acres in Franklin County, Idaho.
What Is the Largest Lake in Franklin County?
Twin Lakes Reservoir is the largest lake in Franklin County, at 439.35 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 40846765). Verified October 30, 2026.