San Pablo Bay National Wildlife Refuge

Quick Facts

San Pablo Bay National Wildlife Refuge


(707) 769-4200

Map Directions

Things To Do


The San Pablo Bay National Wildlife Refuge lies along the north shore of San Pablo Bay in Sonoma, Solano, and Napa Counties in northern California. The refuge includes open bay/tidal marsh, mud flats, and seasonal and managed wetland habitats. The Napa-Sonoma marshes in San Pablo Bay have been greatly impacted by human activities such as hydraulic mining, salt production, water diversions, and diking, draining, and filling for agricultural and industrial uses. About 85 percent of the historic tidal marshes of San Pablo Bay have been altered, negatively affecting the ability of the remaining tidal marshes to accept winter rainfall and purify water in the bay. The refuge provides critical migratory and wintering habitat for shorebirds and waterfowl, particularly diving ducks, and provides year-round habitat for endangered, threatened, and sensitive species like the California clapper rail, salt marsh harvest mouse, California black rail, San Pablo song sparrow, and Suisun shrew. Numerous other threatened, endangered, and sensitive species require tidal marsh habitat for their survival, including 11 fish species that swim through San Pablo Bay to reach their fresh water spawning grounds.

Map of San Pablo Bay NWR

Latitude, Longitude: 38.155482, -122.407436



  • Boating

    Boat access to the open water and intertidal areas of San Pablo Bay provide opportunities for fishing and hunting on the refuge. Boat ramps are available at the Vallejo public marina near Brinkmans Marine and at Port Sonoma near the Petaluma River. Boat launching is not available on the refuge.

  • Bird Watching

    The refuge hosts millions of migratory shorebirds and waterfowl, including the largest wintering population of canvasbacks on the west coast.

  • Fishing

    Fishing by boat is allowed in the open bay and intertidal waters of the refuge. Fishing from shore is not allowed. Please contact the refuge for additional information regarding fishing and hunting.

  • Hiking

    Please check with refuge for trail routes and maps.

  • Hunting

    Hunting and fishing are allowed on designated areas of the refuge during respective seasons subject to both State and Federal regulations. Firearms are permitted only while engaged in legal hunting activities during these established open seasons.



Visitors should call for current directions to the refuge office. It is located a half mile east of intersection of Lakeville Hwy on Hwy 37. The entrance to Lower Tubbs Island is located adjacent to Highway 37, approximately half mile east of the Highway 121/37 intersection in Sonoma County.

Phone Numbers


(707) 769-4200



I applaud the restoration work at San Pablo Bay NWR ( that is improving the wildlife habitat on this former ag land. The Tolay Creek Tubbs Island trail ( is a good place for biking, hiking and birdwatching.