The Tobico Marsh, one of the largest remaining freshwater, coastal wetlands on the Great Lakes is located in the park.

[1] Other natural features of the park include a mile of sandy beach, over 2,000 acres (810 ha) of wetland woods, meadows, oak savannah prairies, and cattail marshes.

[1] The park's 10,000-square-foot (930 m2) Saginaw Bay Visitor Center includes an exhibit hall with interactive natural history displays, 100-seat auditorium, and year-round environmental education programs.

[4] Pollution on the beaches bordering the Saginaw Bay consisting of organic matter has been a significant issue to park patrons and local waterfront land owners in recent years.

Much of the pollution found along the bay shore has been attributed to waste runoff from local farms settled within the Saginaw River watershed, wastewater treatment failures, and leaking septic systems, which contribute nutrients into the water, causing algae blooms.