Most people drive past Hudson, Wisconsin, and the ones who stop find a 45-foot waterfall in a gorge older than dinosau

Wisconsin’s best-kept secret isn’t far

Just 30 minutes from Minneapolis-St. Paul, Willow River State Park spreads across nearly 2,900 acres of forest, prairie, and river in St. Croix County. Most people drive past Hudson, Wisconsin, without stopping.

The ones who pull off find a three-tiered waterfall dropping 45 feet through a gorge that predates the dinosaurs by hundreds of millions of years.

The park draws crowds for good reason, but the falls still feel like something you stumbled onto by accident.

The dam came down and the falls came back

A German immigrant named Christian Burkhardt built a grist mill on the Willow River in 1868, and he later added hydroelectric power plants along the same stretch of water.

Northern States Power ran those dams for decades until lightning knocked one of the plants out in the 1960s. The company sold the land to the state at a reduced price in 1967, and the park opened in 1971.

Then in 1992, crews pulled out the dam at the falls, and Willow Falls returned to the natural cascade it had been before Burkhardt ever arrived.

Stand at the base and feel the mist

The Willow Falls Hill Trail starts at a parking lot on River Road and reaches the falls in less than a mile, though the last stretch drops steeply enough that your legs will feel it.

A wooden footbridge crosses the river and leads to a viewing platform where you can see all three tiers at once, the top shelf feeding the middle, the middle feeding the drop into the gorge.

A path beside the platform takes you down to the base, where the water runs shallow enough to wade in. Watch the rocks.

They’re slick, and there’s no lifeguard.

Thirteen miles of trail through forest and gorge

The park has 13 miles of hiking trails, and they cover a lot of different ground.

If you want easy and flat, the Hidden Ponds Nature Trail runs half a mile on a paved, accessible path through oak forest and wetlands.

If you want history with your views, the Pioneer Trail passes the gravesite of early European settlers before climbing to an overlook above the falls.

The Burkhardt Trail is the longer option, a network of paths above the gorge with several spots where you can stop and look down into the river valley below.

A quiet lake with no motors allowed

Little Falls Lake covers 172 acres behind the only dam still standing in the park. No gas motors, no electric motors.

The water stays calm, and the only sounds come from paddles and birds. A sandy beach runs along the southern shore with picnic tables and a beach house nearby.

Canoe and kayak rentals are available during the season, and if you bring your own non-motorized boat, the launch is ready for you. It’s one of those lakes that looks exactly the way lakes are supposed to look.

Cast for trout above the falls or bass below

The Willow River runs with trout, and the stretch upstream of the waterfall is where most anglers head first. Below the Little Falls Dam, the fish change.

That’s where you’ll find panfish, bass, and northern pike working the slower water.

You need a valid Wisconsin fishing license, and it’s worth checking current conditions before you go since stocking schedules shift.

The river isn’t wide, but it moves through enough different terrain that you can spend a full morning working it and not run out of new water to try.

Climb the limestone walls of the gorge

The rock walls near Willow Falls aren’t just scenery.

Climbers have bolted sport routes into the limestone and dolomite inside the gorge, and the routes run steep enough to keep experienced climbers working.

The rules are specific: no climbing on Saturdays, and on Fridays and Sundays during summer, you need to finish before noon. Rappelling from the top of the gorge isn’t allowed, and you can’t leave fixed gear behind.

If you climb and you’re looking for something different from a gym wall, the gorge gives you old stone and real exposure.

Snakes, turtles and park naturalists inside

The nature center sits near the main picnic area, about two miles west of the park entrance, and it packs more in than you’d expect from a building that size.

Live animals, including snakes and turtles, share space with hands-on exhibits.

Park naturalists run educational programs throughout the year, covering everything from geology to local wildlife.

A gift shop inside supports the Friends of Willow River and Kinnickinnic State Parks, the nonprofit partner that helps keep the place running.

It’s a good stop if you’re visiting with kids or just want to understand what you’re walking through.

New singletrack winds through the wetlands

Since 2021, the WIKI Mountain Bike Club has been carving singletrack trails into the park by hand, and the network keeps growing.

The trails range from green beginner loops to blue and black routes with more technical moves, so there’s something for riders who are still figuring out clipless pedals and riders who’ve been doing this for years.

Raised boardwalks carry you through wetland sections, and a dedicated mountain bike bridge crosses part of the route.

The trailhead is near the beach and dam parking area, which makes it easy to combine a ride with a swim.

Camp deep in the trees at the 300 loop

About 150 campsites spread across three loops called the 100, 200, and 300 campgrounds. The 300 loop is the most wooded of the three and sits closest to the boat launch, the beach, and the main picnic area.

Some sites have electrical hookups, and pull-through spots handle larger RVs without a problem.

Willow River runs one of the highest campground occupancy rates in the Wisconsin State Park System, so if you’re planning a summer weekend, book early.

Spots go fast, especially for the sites that put you closest to the water.

Ice builds around the falls in winter

When temperatures drop in winter, the falls don’t stop.

They slow and ice begins to form around the rushing water, building up in layers as the cold deepens.

The park grooms nine miles of cross-country ski trails on the south side of the river for both classic and skate skiing, and two miles of hard-packed trails on the north side stay open for snowshoeing, dog sledding, and winter hiking.

On Saturdays and Sundays during winter, the nature center classroom opens as a warming house, which matters more than it sounds when the wind picks up off the river.

Bald eagles, herons and fossils in the rock

The mix of prairie, forest, and river running through the park pulls in a wide range of animals. Deer show up near campsites often enough that you stop being surprised.

Bald eagles and great blue herons work the river, and cardinals and chickadees fill in the trees.

Down in the lower layers of the gorge, some of the rock holds trilobite fossils, the remains of marine creatures that lived in the shallow seas covering this part of the continent more than 500 million years ago.

The falls are the draw. The fossils in the walls beneath them are the part that sticks with you.

Visit Willow River State Park in Hudson, Wisconsin

You can reach Willow River State Park at 1034 County Road A in Hudson, Wisconsin. The park is open year-round from 6 a.m. to 11 p.m. Entry requires a Wisconsin State Park vehicle admission sticker.

Dogs are welcome in permitted areas on a leash no longer than 8 feet. The park runs carry-in, carry-out for all trash and recyclables, so plan accordingly.

Given how quickly campsites book up, check the reservation system well before your trip, especially for summer weekends.

This article was created with AI assistance and human editing.

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