Grizzly Island Wildlife area consists of 8,600 acres in the heart of the 84,000-acre Suisun Marsh, largest contiguous estuarine marsh in the United States. Grizzly Island provides habitat for more than 200 species of birds and is home to a variety of threatened or endangered wildlife and plants.
The preserve is generally open for hiking from February to July, and again starting at the end of December. Late winter and spring is best. You can start your hike at any of nine staging areas, but don’t go without a map as most trails are unmarked and it’s easy to lose your way. If visiting with a dog, pay attention to kiosk signage and/or check in with the rangers before setting out.
A self-guided driving tour is a good way to get the lay of the land. The route begins at the Area Headquarters and continues for about 7.5 miles along Grizzly Island Road, which is unpaved and runs through the middle of the wildlife area. Some things you may need for an outing at Grizzly Island: binoculars, field guide, drinking water, sun block, insect repellent, jacket, and appropriate footwear. Please abide by all signs and area regulations.
