Bay City State Park
Overview: Tobico Marsh and the Great Lakes’ Greatest Wetland
At 2,389 acres on the shore of Saginaw Bay (Lake Huron), Bay City State Park is far more than a beach-and-campground operation—it protects one of the largest remaining freshwater coastal wetlands on the entire Great Lakes shoreline. The Tobico Marsh, incorporated into the park in 1994, is a birding and wildlife destination of national significance, where boardwalks, observation towers, and miles of trail provide access to a wetland ecosystem of cattail marshlands, wet meadows, oak savannah prairies, and wetland woods that together support one of the most diverse bird populations in Michigan.
Established in 1922 when the city donated the land to the state, the park has evolved from a simple beach recreation area into a dual-purpose facility: family beach-and-camping recreation on the Saginaw Bay shoreline, and serious nature study and birding in the vast Tobico Marsh complex behind it.
Tobico Marsh: Premier Great Lakes Birding
Located on a central migratory flyway, Tobico Marsh attracts thousands of birds during spring and fall migration—including waterfowl, wading birds, shorebirds, raptors, and songbirds in extraordinary diversity. The marsh complex includes over 2,000 acres of varied wetland habitat serving as a critical staging area for continental bird migration.
- Observation Towers: Elevated platforms providing panoramic views across the marsh
- Boardwalks: Accessible trails through the wetland interior
- Spotting Scopes: Shoreline-mounted optics for wildlife observation
- Peak Migration: Spring (April–May) and fall (September–October) produce the most spectacular bird concentrations
Saginaw Bay Beach
Over 1,000 feet of sandy beach along Saginaw Bay provides warm, shallow swimming with Saginaw Bay’s characteristically gentle conditions. The beach includes an ADA-accessible beach mat and beach wheelchairs—making Bay City one of the most accessible beach parks in the Michigan system.
Saginaw Bay Visitor Center
The 10,000-square-foot visitor center provides exhibits on the Saginaw Bay ecosystem, the Tobico Marsh, Great Lakes ecology, and the natural history of the region. Educational programs run throughout the season.
Camping
The modern campground serves as base camp for both beach recreation and marsh exploration, with sites in a wooded setting near the shoreline.
Seasonal Guide
Spring (April–May)
PEAK SPRING MIGRATION. Thousands of birds pass through Tobico Marsh. Birders from across Michigan converge. Beach still cold.
Summer (June–August)
Beach season. Swimming, spray park, camping. Marsh birding continues with nesting species. Visitor center programs.
Autumn (September–October)
FALL MIGRATION. Second peak birding season. Waterfowl concentrations in the marsh. Fall color.
Winter (November–March)
Ice fishing on Saginaw Bay. Winter birding—overwintering raptors and waterfowl. Cross-country skiing on trails.
Frequently Asked Questions
What is Tobico Marsh? One of the largest remaining freshwater coastal wetlands on the Great Lakes—a nationally significant birding destination within the state park.
Is the beach accessible? Yes. Bay City provides ADA-accessible beach mats and beach wheelchairs—among the most accessible beach facilities in the Michigan park system.
When is the best birding? Spring (April–May) and fall (September–October) migration periods produce the most spectacular bird concentrations.
