Lakes / Louisiana / Plaquemines County / Big Mar
Big Mar, Louisiana
533.55 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Louisiana
29.84 degrees N, 89.91 degrees W - Plaquemines 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 Big Mar Stacks Up
- Larger than 73% of the 664 lakes counted in Louisiana.
- About 13 miles from New Orleans, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Lake Lery | St. Bernard | 5.2 mi | 5,280.31 acres |
| Lost Lake | Plaquemines | 7.0 mi | 558.43 acres |
| Sun Lagoon | Plaquemines | 8.1 mi | 165.52 acres |
| Sun Bayou | Plaquemines | 8.4 mi | 33.49 acres |
| Spanish Lake | Plaquemines | 8.8 mi | 502.03 acres |
| Grand Lake | Plaquemines | 9.1 mi | 1,801.23 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Big Mar
How Big Is Big Mar?
Big Mar covers 533.55 acres in Plaquemines County, Louisiana.
What Is the Largest Lake in Plaquemines County?
Lake Batola is the largest lake in Plaquemines County, at 4,346 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 {0CA39C31-16A0-4B84-AEF2-0A336BE903E5}). Verified October 30, 2026.