Lakes / Louisiana / Grant County
Lakes in Grant County, Louisiana
6 lakes counted in Grant County - the largest is Lake Iatt at 6,603 acres.
6
Lakes Counted
6,603 acres
Largest - Lake Iatt
19 ft
Deepest - Lake Iatt
Grant County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Iatt | Grant | 6,603 acres | 19 ft |
| 2 | Nantachie Lake | Grant | 1,424 acres | 17 ft |
| 3 | Hardwater Lake | Grant | 511 acres | 11 ft |
| 4 | Dunn Lake | Grant | 130.01 acres | - |
| 5 | Catfish Prairie | Grant | 124.6 acres | - |
| 6 | Kisatchie Lake | Grant | 104.27 acres | - |
Sources: Louisiana Department of Wildlife and Fisheries lake data; USGS. Verified October 30, 2026.