Lakes / Louisiana / Jefferson County
Lakes in Jefferson County, Louisiana
3 lakes counted in Jefferson County - the largest is Lake Pontchartrain at 407,803.25 acres.
3
Lakes Counted
407,803.25 acres
Largest - Lake Pontchartrain
Jefferson County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Pontchartrain | Jefferson | 407,803.25 acres | - |
| 2 | Bay Dosgris | Jefferson | 665.74 acres | - |
| 3 | Bayou Plat | Jefferson | 61.28 acres | - |
Sources: Louisiana Department of Wildlife and Fisheries lake data; USGS. Verified October 30, 2026.