San Joaquin Marsh Wildlife Sanctuary is owned and protected by Irvine Ranch Water District.

IRWD invites you to enjoy the marsh. But while you’re there, you must follow these rules to ensure the well-being of the plants and animals that call the marsh home.

No bicycles, scooters, or motor vehicles (except in parking lots)

No dogs or other pets (service animals permitted as prescribed by law)

No horses or horsebackriding

No drones

Stay on trails and obey all trail signs

Do not feed animals

Do not release animals

No smoking or vaping

No alcohol

No drugs

No fishing

No hunting

No firearms or pellet guns

No camping

No swimming or any contact with water

Do not drink pond water

Do not litter; dispose of trash properly

No organized events without prior approval by Irvine Ranch Water District

Do not collect or disturb the wildlife, including flowers or other plant materials, animals, birds, insects, rocks or any other element; harvesting of berries is allowed along Riparian View

All plants and animals are protected.

Hours: Open dawn to dusk.
Overflow parking lot will be locked at dusk or 8 p.m., whichever comes first.

For more information, call Irvine Ranch Water District at 949-453-5300 or visit IRWD.com/marsh. For lost and found items, contact Sea and Sage Audubon House at 949-261-7963.