Lakes / Arkansas / Polk County / Irons Fork Reservoir
Irons Fork Reservoir, Arkansas
283 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Arkansas
34.65 degrees N, 94.12 degrees W - Polk 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 Irons Fork Reservoir Stacks Up
- Larger than 83% of the 623 lakes counted in Arkansas.
- The largest lake in Polk County among those counted.
- About 53 miles from Fort Smith, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Mena Lake | Polk | 6.2 mi | 74 acres |
| City of Mena Sewage Logoon | Polk | 6.9 mi | 32 acres |
| Ward Lake | Polk | 7.6 mi | 36 acres |
| Poteau River Site 18 Lake | Scott | 13 mi | 29 acres |
| Lake Wilhelmina | Polk | 14 mi | 197 acres |
| Poteau River Site 13 Lake | Scott | 17 mi | 970 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Irons Fork Reservoir
How Big Is Irons Fork Reservoir?
Irons Fork Reservoir covers 283 acres in Polk County, Arkansas.
What Is the Largest Lake in Polk County?
Irons Fork Reservoir is the largest lake in Polk County, at 283 acres.
Largest Lakes in Arkansas
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Bull Shoals Lake | Marion | 44,979 acres | - |
| 2 | Lake Ouachita | Garland | 38,214 acres | - |
| 3 | Lake Dardanelle | Johnson | 34,067 acres | - |
| 4 | Greers Ferry Lake | Cleburne | 31,054 acres | - |
| 5 | Beaver Lake | Benton | 28,026 acres | - |
All 623 Arkansas 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 58153565). Verified October 30, 2026.