Lakes / Louisiana / St. Martin County / Begnard Bay
Begnard Bay, Louisiana
30.37 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Louisiana
30.30 degrees N, 91.73 degrees W - St. Martin 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 Begnard Bay Stacks Up
- Larger than 4% of the 664 lakes counted in Louisiana.
- About 18 miles from Lafayette, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Lake Bigeux | St. Martin | 3.1 mi | 4,794.83 acres |
| Lake Pelba | St. Martin | 4.3 mi | 216.86 acres |
| Warner Lake | St. Martin | 5.4 mi | 121.89 acres |
| Cow Island Lake | St. Martin | 5.8 mi | 624.56 acres |
| Catahoula Lake | St. Martin | 6.4 mi | 76.86 acres |
| Bay Toni | St. Martin | 10 mi | 201.17 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Begnard Bay
How Big Is Begnard Bay?
Begnard Bay covers 30.37 acres in St. Martin County, Louisiana.
What Is the Largest Lake in St. Martin County?
Lake Palourde is the largest lake in St. Martin County, at 10,809.86 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 155752173). Verified October 30, 2026.