Big Branch Marsh National Wildlife Refuge lies along the northeastern shore of Lake Pontchartrain near Lacombe in St. Tammany Parish, Louisiana, and is managed by the U.S. Fish and Wildlife Service as part of the Southeast Louisiana Refuges complex, with an office address of 61389 Louisiana Highway 434. The refuge protects pine flatwoods, bottomland hardwood forest, and brackish and freshwater marsh. Trails and boardwalks range from roughly 1 to 3 miles (1.6 to 4.8 km) depending on the route chosen, and they take about one to two hours. Trailhead access is by car, about one hour from New Orleans across the Lake Pontchartrain Causeway and then east. Entry is free, and no permit is required for day visits. The terrain is flat with no elevation gain, so the hike is easy and appropriate for beginners and families. Surfaces include wooden boardwalk over wet ground and packed earth or gravel paths, and low areas may be muddy or flooded after heavy rain. Shade is moderate in the forest sections, while marsh stretches are open and exposed. Landmarks include the pine savanna, the marsh edges with views of open water, and observation areas that suit birdwatching. The refuge supports wading birds, waterfowl, red-cockaded woodpeckers in suitable habitat, and other wildlife, so binoculars are useful. Hikers can turn around at any point along the boardwalk and return by the same route. There are no huts or shelters, and drinking water is not generally provided on the trails, so visitors should bring their own. Mosquitoes and biting flies are heavy in summer, making repellent essential, and the cooler season from October to April is the most comfortable. Conditions after storms can vary, so contacting the refuge office is wise before traveling.
| Distance | Boardwalk and trails of 1-3 miles (1.6-4.8 km) depending on route |
|---|---|
| Duration | 1-2 hours |
| Difficulty | easy |
| Trailhead | Drive across the Causeway then east (about 1 hour); free |
| Best season | October-April |
| Address | Southeast Louisiana Refuges, 61389 Louisiana Highway 434, Lacombe, LA 70445 |
Trail facts
- Trail area
- Lacombe
What to bring
- Insect repellent
- Binoculars
- Water
Location
Southeast Louisiana Refuges, 61389 Louisiana Highway 434, Lacombe, LA 70445
30.3100, -89.9500 View on map
Highlights
- Walk boardwalk and trail through pine flatwoods and marsh
- Birdwatch for wading birds, waterfowl, and woodland species
- Enjoy free access to a U.S. Fish and Wildlife Service refuge
- Combine the visit with other north shore stops such as the Tammany Trace
Tips for visiting
- Bring binoculars for birdwatching.
- Use insect repellent, especially from spring through early autumn.
- Carry all drinking water; none is generally available on the trails.
- Call the refuge office at 985-882-2000 to check conditions after storms.
- Visit October to April to avoid heat and heavy insects.
When to visit
October to April is most comfortable; early morning is best for wildlife.
Accessibility
Boardwalk sections are flat and may be usable with wheelchairs or strollers, while natural-surface paths can be uneven or muddy. Visitors with mobility needs should confirm conditions with the refuge.
Visit, book or contact
Frequently asked questions
How long are the trails?
Boardwalk and trail options range from about 1 to 3 miles (1.6 to 4.8 km). Most visits last one to two hours.
Is there an entrance fee?
No. Access to the refuge is free.
How far is it from New Orleans?
It is about one hour by car, crossing the Lake Pontchartrain Causeway and driving east toward Lacombe.