Daily interruptions and brief closures of public access trail crossings (including a section of the Bay Trail) for delivery of material to Pond A1 will take place between 7:30 A.M and 4 P.M weekdays. December 11, 2024, until January 31, 2025.
Truck traffic will enter the project area through the City of Mountain View’s Shoreline Park and into Pond A1. Trucks will be traveling along San Antonio Road, onto Terminal Boulevard, and then into Shoreline Park on paved trails. A new temporary access ramp will be built at the northern limit of Shoreline Park, adjacent to the Bay Trail, for material transport to the project area in Pond A1. Material will be used for construction access, habitat enhancements and levee fill. The Bay Trail and most Shoreline Park trails will be accessible on weekdays when no hauling or construction is occurring. A short section of Shoreline Park trail will be closed during times when material is being actively delivered to the pond. Temporary signs and flaggers will be placed at the Bay Trail, at relevant Shoreline Park trails, and at the Terminal Boulevard entrance to manage truck traffic and trail user access.
This project will help the implementation of the South Bay Salt Pond Restoration Project’s Phase 2 action at the Alviso-Mountain View Ponds. It will establish an access route and stockpile location for deliveries by haul trucks of fill material for the project construction, including wildlife habitat slopes and islands and for improvements to existing levees.
South San Francisco Bay Shoreline Project (Phase I) between the Alviso Slough/Guadalupe River and Coyote Creek is underway. Mallard Slough Trail is closed due to construction as well as sections of Alviso Slough Trail at Don Edwards San Francisco Bay National Wildlife Refuge in Alviso California. Construction hours are 7 a.m. to 5:30 p.m., Monday through Friday, and on weekends as necessary, excluding holidays. Construction is scheduled to finish in June 2025. For more information.
Visit Us
National wildlife refuges offer us all a chance to unplug from the stresses of daily life and reconnect with our natural surroundings. Surrounded by over 8 million people in the heart of the tech industry, Don Edwards San Francisco Bay National Wildlife Refuge is an excellent place to visit, whether for a short hike or a longer day outing. The refuge offers a wide variety of recreation opportunities.
Activities
Things to Do
If you have 15-minutes...
- Start at the Visitor Center and let our friendly staff and volunteers help you plan your visit! Obtain maps and brochures. Enjoy the displays and videos in the Station. Look through binoculars to sample the birdlife in the marsh. Kids of all ages can explore the Nature Discovery Area just outside the Visitor Center.
If you have one hour.
- Try one of the easily accessed trails near the Visitor Center.
La Riviere Marsh is 0.7 miles one way. The trail is a compacted dirt levee with a wooden boardwalk. Trail leads through tidal salt marsh salt marsh
Salt marshes are found in tidal areas near the coast, where freshwater mixes with saltwater.
Learn more about salt marsh , restored from a commercial salt crystallizer bed. This trail is probably the best place on the refuge to view the endangered Ridgway’s rail as it comes out at low tide to feed in the muddy slough channels.
Tidelands Trail is 1-1.4 mile loop. The trail is compacted gravel on level areas and a combination of paved and compacted dirt on steep slopes. Trail traverses uplands, tidal slough, salt pond, and tidal salt marsh. Shorebirds and grebes are plentiful in the pond during the winter, and Forster’s tern and American avocets in the summer. The tidal marsh is home to the endangered Ridgway’s rail.
If you have half a day or more.
- Take one of the trails in Fremont and then travel over the Environmental Education Center in Alviso! Several trails are available and opportunities for some excellent birding, especially during the fall and spring migrations. The Center also has a butterfly garden and a self-guided nature Play area.
Trails
Don Edwards San Francisco Bay National Wildlife Refuge is an excellent place to visit whether you are looking to take a leisurely walk, engage in some birding, or finding a new challenging trail. Whether you go on a short walk or hike a longer trail, there are over 30 miles of trails for you to explore.
Dogs on a 6-foot leash are permitted only on the the Tidelands Trail, Harrier Spur Trail, Quarry Trail, and Marshlands Road near the Visitor Center in Fremont. Dogs are prohibited on all other trails and lands throughout the refuge
Trail Closure Alert:
Mallard Slough Trail is closed due to construction as well as sections of Alviso Slough Trail at Don Edwards San Francisco Bay National Wildlife Refuge in Alviso California.
South San Francisco Bay Shoreline Project (Phase I) between the Alviso Slough/Guadalupe River and Coyote Creek is underway. The project, once completed, will protect north San José, including the community of Alviso and the Regional Wastewater Facility, from a 100-year coastal storm and rising seas.
Construction hours are 7 a.m. to 5:30p.m., Monday through Friday, and on weekends as necessary, excluding holidays. Construction is scheduled to finish in June 2025.
Other Facilities in the Complex
Don Edwards San Francisco Bay National Wildlife Refuge is managed as part of the San Francisco Bay National Wildlife Refuge Complex. Other refuges in the San Francisco Bay National Wildlife Refuge Complex include: Salinas River, Ellicott Slough, Farallon Islands, Marin Islands, San Pablo Bay, and Antioch Dunes National Wildlife Refuge.
The Refuge Complex headquarters is located at 1 Marshlands Rd. Fremont, CA. 94555.
A National Wildlife Refuge Complex is an administrative grouping of two or more refuges, wildlife management areas or other refuge conservation areas that are primarily managed from a central office location. Refuges are grouped into a complex structure structure
Something temporarily or permanently constructed, built, or placed; and constructed of natural or manufactured parts including, but not limited to, a building, shed, cabin, porch, bridge, walkway, stair steps, sign, landing, platform, dock, rack, fence, telecommunication device, antennae, fish cleaning table, satellite dish/mount, or well head.
Learn more about structure because they occur in a similar ecological region, such as a watershed or specific habitat type, and have a related purpose and management needs. Typically, a project leader or complex manager oversees the general management of all refuges within the complex and refuge managers are responsible for operations at specific refuges. Supporting staff, composed of administrative, law enforcement, refuge manager, biological, fire, visitor services, and maintenance professionals, are centrally located and support all refuges within the complex.
Rules and Policies
Know Before You Go
Dogs on a 6-foot leash are permitted only on the the Tidelands Trail, Harrier Spur Trail, Quarry Trail, and Marshlands Road near the Visitor Center in Fremont. Dogs are prohibited on all other trails and lands throughout the refuge.
Locations
Administration Building
1 Marshlands Rd.
Fremont, CA 94555
Phone: 510-792-0222
Buildings are closed on all Federal Holidays.
Visitor Center
2 Marshlands Rd.
Fremont, CA 94555.
Open Saturday and Sunday 10:00 a.m. to 2:00 p.m.
Vehicle Entrance Gate
7:00 am - 7:00 pm
Trails
Open sunrise to sunset.