San Pablo Bay National Wildlife Refuge Professional Guide
Detailed Trail Description from our Guidebook
"San Pablo Bay National Wildlife Refuge lies along San Pablo Bay at the northern reaches of San Francisco Bay. The wildlife refuge encompasses 13,000 acres between the mouth of the Petaluma River and Mare Island by Vallejo, including tidal wetlands, mud flats, salt marshes, and open water. Numerous water ways drain through the surrounding terrain, including the Napa River, Petaluma River, Sonoma Creek, Tolay Creek, and many sloughs. The waterways are interspersed with grasslands, oak woodlands, and agricultural fields. Lower Tubbs Island, near Tolay Creek, is the most accessible portion of the national wildlife refuge, luring bird watchers, wildlife photographers, and hikers. Lower Tubbs Island Bird Sanctuary is a 332-acre preserve within the refuge. It is a sanctuary for migrating birds, waterfowl, and shorebirds. This trail follows a dirt levee 2.75 miles to the bird sanctuary on Lower Tubbs Island, then continues another 1.5 miles to Midshipman Point at the tip of the open waters. The terrain is flat, exposed, and windswept with wide open vistas."