San Pablo Bay is a tidal estuary that forms the northern extension of the San Francisco Bay in the East Bay and North Bay regions of the San Francisco Bay Area in northern California.

The San Pablo Bay National Wildlife Refuge was established in 1974 to support migratory birds, wetland habitat, and endangered species. The Refuge consists of more than 19,000 acres located along the northern edge of San Pablo Bay in northern California.

San Pablo Bay National Wildlife Refuge is a 13,190-acre (53.4 km 2) National Wildlife Refuge in California established in 1970. It extends along the northern shore of San Pablo Bay, from the mouth of the Petaluma River, to Tolay Creek, Sonoma Creek, and ending at Mare Island.

The trails at the San Pablo Bay National Wildlife Refuge offer some of the most rewarding and unusual Sonoma County hikes, with wide open spaces just minutes away.

San Pablo Bay is a bay in northern California. It is an estuary , which means that saltwater from the ocean mixes with fresh water from rivers. It is connected to the San Francisco Bay (to the south) and the Carquinez Strait (to the east).

The approximately 11,000-acre San Pablo Bay Wildlife Area includes tidal marshes and sloughs, tidal mudflats, shallow water, and other lowland wildlife habitat. The floristics are typically estuarine with cordgrass and pickleweed predominating throughout the lower zonation.

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In response to rapidly disappearing wetlands and its prime location within the Pacific Flyway, the San Pablo Bay National Wildlife Refuge was created in 1974 to protect migratory birds, wetland habitat, and endangered species.

The San Pablo Bay National Wildlife Refuge (Refuge) consists of more than 21,000 acres located along the northern edge of San Pablo Bay in northern California. Waterfowl hunting is allowed on 10,216 acres in the open waters of the San Pablo Bay and its navigable tidal sloughs (unless otherwise posted in the field) and in the Cullinan Ranch and ...

eBird in San Pablo Bay National Wildlife Refuge. eBirding This Month Feb 2025. Change Time Period. Change Time Period. eBirding This Month; eBirding This Year; Updated ~2 hours ago. 103 Species 28 Checklists eBirders. New Species. Native and Naturalized (5) California Scrub-Jay Aphelocoma californica