Lakes / Iowa / Fremont County / Forneys Lake
Forneys Lake, Iowa
398 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Iowa
40.85 degrees N, 95.78 degrees W - Fremont 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 Forneys Lake Stacks Up
- Larger than 85% of the 220 lakes counted in Iowa.
- About 118 miles from Sioux City, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Keg Creek Lake | Mills | 9.2 mi | 55 acres |
| Pony Creek Lake | Mills | 16 mi | 84 acres |
| Folsom Lake | Mills | 16 mi | 127 acres |
| Lake Manawa | Pottawattamie | 25 mi | 733 acres |
| Viking Lake | Montgomery | 40 mi | 144 acres |
| Nobles Lake | Harrison | 46 mi | 31 acres |
Straight-line distance between lake centers.
Facts and Figures
Largest Lakes in Iowa
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Rathbun Lake | Appanoose | 13,869 acres | - |
| 2 | Lake Red Rock | Marion | 8,619 acres | - |
| 3 | Spirit Lake | Dickinson | 5,463 acres | - |
| 4 | Saylorville Lake | Polk | 5,428 acres | - |
| 5 | Clear Lake | Cerro Gordo | 3,632 acres | - |
All 220 Iowa lakes ranked by surface area
Sources: USGS NHD (The National Map NHD MapServer layer 12) named waterbodies FTYPE 390/436; counties via Census point-in-polygon lake data (ID 129557706). Verified October 30, 2026.