Merrick

Merrick State Park occupies 322 acres along the spectacular backwaters of the Mississippi River in Buffalo County, Wisconsin, approximately two miles north of Fountain City. The park provides intimate access to one of North America's greatest river ecosystems, where quiet sloughs, forested islands, and open marshes support extraordinary wildlife diversity. Situated within the Upper Mississippi River National Wildlife and Fish Refuge, Merrick offers exceptional opportunities for birdwatching, fishing, boating, and nature observation. The park's riverside campground allows visitors to wake to calls of great blue herons and watch eagles soar over the bluffs. Unlike the main river channel with its commercial barge traffic, the backwater areas accessible from Merrick present a tranquil wilderness experience. The park serves as a gateway to exploring the complex mosaic of aquatic and terrestrial habitats that characterize the Upper Mississippi floodplain.

The wildlife diversity at Merrick State Park reflects its location within the Upper Mississippi River corridor, one of North America's most important migratory flyways. The backwater sloughs and marshes support populations of great blue herons, great egrets, and other wading birds that fish the shallow waters. Bald eagles nest in tall trees along the bluffs and frequently hunt over the river, their numbers increasing dramatically during winter when open water concentrations of fish attract hundreds of eagles. Ospreys dive for fish during summer months, while kingfishers perch on overhanging branches. The wooded uplands host yellow-throated vireos, blue-gray gnatcatchers, orchard orioles, and cerulean warblers. Muskrats construct lodges in the marshes, while river otters play in quiet pools. White-tailed deer browse in the forest understory, and wild turkeys forage along woodland edges. The Mississippi River supports exceptional fish populations including largemouth and smallmouth bass, bluegills, crappies, catfish, and other species.

The vegetation at Merrick State Park and the surrounding Upper Mississippi floodplain represents one of the most extensive floodplain forest ecosystems in the Midwest. Silver maple, cottonwood, and willow dominate the bottomland forests that line the river's edge and islands, adapted to periodic flooding and saturated soils. The wooded bluffs rising above the floodplain support oak-hickory forests with different species composition. These upland woods provide critical habitat for neotropical migrant birds that nest in the canopy. Wetland communities include emergent marshes of cattails and bulrushes, sedge meadows, and shrub swamps that transition between aquatic and terrestrial habitats. Submergent and floating aquatic plants grow in quiet backwater areas, providing cover for fish and food for waterfowl. Invasive species including purple loosestrife and reed canary grass pose ongoing management challenges throughout the Mississippi floodplain. The diversity of plant communities creates the habitat complexity that supports the area's exceptional wildlife populations.

The geological story of Merrick State Park involves the dramatic interplay between the Mississippi River and the ancient bluffs that confine its floodplain. The bluffs visible from the park consist of Paleozoic sedimentary rocks, primarily limestone and dolomite, deposited in shallow tropical seas approximately 450 to 500 million years ago. These resistant rock formations were carved into their present configuration by erosion over millions of years, with the Mississippi River establishing its current course following glacial retreat approximately 10,000 years ago. The wide floodplain and backwater complex developed as the river meandered across its valley, depositing sediments and creating the islands, sloughs, and marshes visible today. The lock and dam system constructed in the 1930s fundamentally altered river dynamics, creating permanent pools that flooded former bottomlands and expanded aquatic habitats. The backwaters at Merrick occupy Pool 5A of the Upper Mississippi, impounded behind Lock and Dam 5A near Fountain City.

Merrick State Park experiences a humid continental climate with four distinct seasons, moderated somewhat by the thermal mass of the Mississippi River and its backwaters. Summers are warm and humid, with temperatures typically reaching the upper 80s Fahrenheit, ideal for fishing, boating, and camping. The river corridor can trap humidity, making summer evenings muggy. Spring brings variable weather and rising water levels as snowmelt flows downstream, occasionally flooding the south campground and requiring temporary closures. Fall offers perhaps the finest visiting conditions, with comfortable temperatures, spectacular foliage on the bluffs, and peak waterfowl migration. Winters are cold, with temperatures frequently below freezing, though the river's moderating influence prevents the extreme lows experienced farther north. The backwaters freeze during most winters, allowing ice fishing. Fog often forms over the river during spring and fall as temperature differentials between water and air create atmospheric moisture.

Human history along the Upper Mississippi River extends back thousands of years to the earliest Native American inhabitants who utilized the river's abundant resources. The river served as a major transportation corridor and provided fish, waterfowl, freshwater mussels, and other foods. European exploration began with French voyageurs in the 17th century, who established trade networks with Indigenous peoples. The river became increasingly important for commerce as American settlement expanded westward in the 19th century. Steamboat traffic transformed river towns including nearby Fountain City into commercial centers. The region's history is closely linked to John A. Latsch, a wealthy grocer from Winona, Minnesota, who devoted his fortune to preserving Mississippi River lands. By his death in 1934, Latsch had purchased more than 18,000 acres valued at over two million dollars, including lands that would become several state parks. His vision of public access to the river landscape lives on in parks like Merrick.

Merrick State Park's establishment reflects the broader movement to preserve public access to the Upper Mississippi River landscape in the face of development pressures. The park's history intertwines with that of John A. Latsch, whose extensive land purchases along the Mississippi created a foundation for multiple state parks in Wisconsin and Minnesota. Land that would become Merrick was among the properties preserved through Latsch's generosity and the subsequent efforts of state conservation agencies. The construction of Lock and Dam 5A by the U.S. Army Corps of Engineers in 1935 transformed the river landscape, creating the permanent pools and expanded backwater habitats that characterize the area today. The dam project was authorized by Congress in 1930 as part of the nine-foot channel navigation project. Wisconsin developed Merrick as a state park to provide public access to the now-impounded backwaters for camping, fishing, and recreation. The park has evolved to emphasize the natural and recreational values of the Mississippi River ecosystem.

Merrick State Park offers three miles of hiking trails that wind through bottomland forest and provide views of the river backwaters and surrounding bluffs. These trails offer excellent opportunities for birdwatching, particularly during spring and fall migration when the Mississippi flyway carries thousands of birds through the region. The park features two boat landings that provide direct access to the backwater sloughs and islands, perfect for fishing, canoeing, and kayaking. Rental canoes are available daily from Memorial Day through Labor Day, allowing visitors without their own watercraft to explore. Fishing from boats or shore targets largemouth and smallmouth bass, bluegills, crappies, catfish, and other Mississippi River species. The riverside campground provides one of the most scenic camping experiences in Wisconsin, with sites overlooking the water. Wildlife observation from the campground, trails, and watercraft ranks among the park's primary attractions. Winter visitors can enjoy cross-country skiing and snowshoeing on park trails, with ice fishing popular on the frozen backwaters.

Merrick State Park is located at S2965 State Road 35 in Fountain City, Wisconsin, approximately two miles north of town along the Great River Road. The park is accessible via State Highway 35, which follows the Mississippi River bluffs through some of Wisconsin's most scenic landscape. Camping facilities include a south campground with 35 sites, 28 of which are waterfront on Fountain City Bay, offering the opportunity to moor boats directly at campsites. This campground may close during periods of high water when the Mississippi floods the low-lying areas. All sites provide picnic tables and fire rings, with modern restrooms and showers available. Two boat landings provide access to the backwaters for fishing, paddling, and pleasure boating. Canoe rentals are available during summer months. A picnic area with shelter accommodates day visitors. A Wisconsin State Park vehicle admission sticker is required. The nearest full services including lodging, fuel, and groceries are available in Fountain City and Winona, Minnesota, across the river.

Conservation at Merrick State Park contributes to broader efforts to protect and restore the Upper Mississippi River ecosystem, one of North America's most important and imperiled landscapes. The park lies within the Upper Mississippi River National Wildlife and Fish Refuge, which protects more than 240,000 acres of floodplain habitat across four states. Forest management in the Mississippi floodplain addresses two major concerns: forest regeneration and diversity. Changes in hydrology from the lock and dam system have altered flooding patterns that historically promoted tree reproduction. Invasive species including reed canary grass and purple loosestrife threaten native wetland communities and require ongoing management. Water quality protection remains a critical issue, with agricultural runoff contributing nutrients that fuel algal growth. The park participates in citizen science monitoring and educational programming to engage visitors in conservation awareness. Sustainable fishing practices help maintain healthy populations while supporting recreational opportunities. The collaborative management of the refuge across multiple agencies and states provides a model for large-scale ecosystem conservation.