Grand Lagoon

Boat Ramps: 1
Access Points: 1
Species: 7

Grand Lagoon in St. Tammany County offers anglers access to diverse fishing opportunities in Louisiana's unique estuary system. Located in a parish known for exceptional fishing, this water body provides access to both freshwater and brackish species. St. Tammany Parish sits on Lake Pontchartrain's estuary system, where anglers can target everything from largemouth bass and bluegill to species that move between fresh and saltwater environments. The area benefits from its position near the Rigolets, a deepwater tidal pass that connects Lake Pontchartrain and Lake St. Catherine to Lake Borgne, allowing Gulf of Mexico saltwater to flow through and creating productive fishing habitat.

Louisiana licenses and regulations4 to check before you go

Species & education

Learn what type of fish are at Grand Lagoon and what's needed to catch them.

Find which waters have the species you want to catch

Largemouth Bass

Micropterus salmoides

Black Crappie

Pomoxis nigromaculatus

Alligator Gar

Atractosteus spatula

Blue Catfish

Ictalurus furcatus

Bluegill Sunfish

Lepomis macrochirus

Channel Catfish

Ictalurus punctatus

White Crappie

Pomoxis annularis

Fishing spots, boat ramps & amenities

Learn how to get on Grand Lagoon. Uncover great fishing access points, boat ramps, and all the facilities you need for an unforgettable day on the water. Some locations shown may border or include private property. Always check property boundaries and applicable regulations before visiting. onWater's Public & Private Land layer can help you plan your access with confidence.

Bayou Liberty Marina

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Know where you can legally fish on Grand Lagoon

See public and private land boundaries along the water, turn on private parcels with owner details to know where permission is required, and find land-trust parcels that offer permitted fishing access.

Louisiana licenses and regulations

Louisiana Boating Regulations

When using any type of watercraft to access a body of water, it is important to follow all federal, state, and local rules and regulations. These rules and regulations include boat permitting and licensing, invasive species inspections and stamps, life jacket and PFD rules, motor size and horsepower restrictions, noise limitations, restrictions on personal watercraft, and many more. Visit the web link below for the most current rules and regulations for this body of water.

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Louisiana Fishing License

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Louisiana Fishing Regulations

This river has a variety of species and regulations, including potential floating and/or watercraft restrictions. Because this river is specially managed for species, seasons, angling methods, and watercraft, it is strongly encouraged you check all federal, state, and local regulations before fishing. Visit any of the links below, inquire locally, or contact a local fly shop to learn current regulations and restrictions.

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Louisiana Stream Access Laws

The beds and bottoms of all navigable waters and the banks or shores of bays, arms of the sea, the Gulf of Mexico, and navigable lakes belong to the state of Louisiana, and the policy of this state is hereby declared to be that these lands and water bottoms, hereinafter referred to as ‘public lands’, shall be protected, administered, and conserved to best ensure full public navigation, fishery, recreation, and other interests

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Take Grand Lagoon with you

The onWater Fish app keeps this water's access points, species and conditions in your pocket, with the tools you use once you're there.

Use the map without signal
Download the map around Grand Lagoon to use it offline when coverage drops.
Log your catches here
Keep a private fishing journal for Grand Lagoon to find where and when fish are biting for you.
HD depth charts from Garmin
Find drop offs, ledges, channels, points and shallow flats with Garmin depth charts in the app.