Lakes / Louisiana / St. Mary County / Grand Avoille Cove
Grand Avoille Cove, Louisiana
137.95 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Louisiana
29.92 degrees N, 91.55 degrees W - St. Mary 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 Grand Avoille Cove Stacks Up
- Larger than 45% of the 664 lakes counted in Louisiana.
- About 35 miles from Lafayette, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Buffalo Cove | Iberia | 5.6 mi | 37.11 acres |
| Lake Fausse Pointe | Iberia | 6.0 mi | 16,501 acres |
| Jackass Bay | St. Martin | 10 mi | 53.01 acres |
| Crossing Cove | St. Martin | 12 mi | 109.43 acres |
| Mud Lake | St. Mary | 12 mi | 150.29 acres |
| Sixmile Lake | St. Mary | 14 mi | 3,331.46 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Grand Avoille Cove
How Big Is Grand Avoille Cove?
Grand Avoille Cove covers 137.95 acres in St. Mary County, Louisiana.
What Is the Largest Lake in St. Mary County?
Sixmile Lake is the largest lake in St. Mary County, at 3,331.46 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 120027840). Verified October 30, 2026.