Lakes / Louisiana / Madison County / Grassy Lake
Grassy Lake, Madison County, Louisiana
25.31 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Louisiana
32.49 degrees N, 91.06 degrees W - Madison County. State and county outlines drawn from Census boundary data; the lake marker is placed by its Louisiana Department of Wildlife and Fisheries coordinates, not by eye. Schematic - not a survey map.
How Grassy Lake Stacks Up
- Larger than 0% of the 664 lakes counted in Louisiana.
- About 141 miles from Baton Rouge, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Pervis Lake | Madison | 0.6 mi | 91.4 acres |
| Eagle Lake | Madison | 2.5 mi | 4,830.65 acres |
| Halpino Lake | Madison | 3.6 mi | 396.67 acres |
| Willow Lake | Madison | 10 mi | 59.66 acres |
| Broad Lake | East Carroll | 11 mi | 27.4 acres |
| Sandbank Lake | Madison | 11 mi | 74.01 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Grassy Lake
How Big Is Grassy Lake?
Grassy Lake covers 25.31 acres in Madison County, Louisiana.
What Is the Largest Lake in Madison County?
Eagle Lake is the largest lake in Madison County, at 4,830.65 acres.
Deepest Natural Lakes in Louisiana
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | False River | Pointe Coupee | 3,212 acres | 65 ft |
| 2 | Vernon Lake | Vernon | 6 acres | 53 ft |
| 3 | Lake Concordia | Concordia | 1,026 acres | 50 ft |
| 4 | Caney Creek Reservoir | Jackson | 4,738 acres | 43 ft |
| 5 | Lake Providence | East Carroll | 1,380 acres | 37 ft |
All 27 Louisiana lakes ranked by depth
Largest Lakes in Louisiana
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Pontchartrain | Jefferson | 407,803.25 acres | - |
| 2 | Toledo Bend Reservoir | Sabine | 181,600 acres | 110 ft |
| 3 | Lake Maurepas | Livingston | 58,308.4 acres | - |
| 4 | Sabine Lake | Cameron | 56,867.74 acres | - |
| 5 | White Lake | Vermilion | 55,913.91 acres | - |
All 664 Louisiana lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 125452615). Verified October 30, 2026.