Largest lakes & reservoirs in Louisiana by shoreline length
The length of the exterior shoreline around a lake is measured at the lake’s normal elevation. The shoreline length can be considerably shorter or longer when lake water levels are lower or higher than normal. A lake with many coves has a much longer shoreline than a lake of similar surface area that is nearly circular in shape.When known, the shoreline miles that we report in our statistics include only the lake’s exterior shoreline, and exclude the shorelines of islands located within a lake’s boundaries. In lakes with many islands, those islands’ combined shorelines may exceed a lake’s exterior shoreline.
You can find many of the world’s longest-shoreline lakes on LakeLubbers. Note: For some lakes, "Longest Shorelines" data is unknown or does not apply, so this table may display fewer lakes than the total 11 articles we have published for Louisiana lakes.
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Below are lakes within USA > US South Region > Louisiana > Compared by longest shoreline length in miles. This list does not represent all lakes in Louisiana, only the 11 Louisiana lake articles we have published on the LakeLubbers website.
Lake name  |
Shoreline length in miles |
Lake description |
|---|---|---|
| Toledo Bend Reservoir, LA/TX (Crossroads Region, LA, Louisiana, Piney Woods Region, TX, Texas, US South Region, US Southwest Region, USA) |
1,264 mi | Also known as Toledo Bend Lake A grand experience is assured in visiting Toledo Bend Reservoir, renowned as the largest man-made aquatic body in the southern United States. Cradled… |
| Lake Pontchartrain, LA (Greater New Orleans Region, LA, Louisiana, US South Region, USA) |
351 mi | Lake Pontchartrain technically isn’t a lake at all. In scientific circles, it’s referred to as an estuary. That’s really just a fancy way to say that… |
| Cross Lake, LA (Louisiana, Sportsman's Paradise Region, LA, US South Region, USA) |
70 mi | Cross Lake is a popular fishing and boating lake near Shreveport in Northwest Louisiana. The 8,575 acre freshwater reservoir supplies water to the cit… |
| Black River Lake and Cocodrie Lake (Crossroads Region, LA, Louisiana, US South Region, USA) |
49 mi | Also known as Cocodrie Lake Complex The Cocodrie Lake Complex, consisting of Black River Lake and Cocodrie Lake, is one of those places that could only exist in the delta lands of the mi… |
| Lake Claiborne, LA (Louisiana, Sportsman's Paradise Region, LA, US South Region, USA) |
40 mi | Lake Claiborne is well known as the “Best Kept Secret in Louisiana.” Also referred to as Louisiana’s purest lake, the quality of the water makes Lake… |