Willow River State Park
- Status
- Open (per official listing)Daily 6 a.m. – 11 p.m.
- Entrance fee
- Statewide rule — see below
- Day-use reservations
- None mentioned
- Dogs
- Statewide rule — see below
- Camping
- Yes
- Official site
- dnr.wisconsin.gov(715) 386-5931
Official page last checked Oct 29, 2026. How we keep this current
Current alerts 1
Weather Willow River SP Water Systems Closed (Beginning Oct. 13, 2026)The park water systems (showers, flush toilets, water fountains and the sanitary dump station) will shut down for the season on Tuesday, Oct. 13,… (more)
The park water systems (showers, flush toilets, water fountains and the sanitary dump station) will shut down for the season on Tuesday, Oct. 13, 2026. Vault toilets will remain open and water is available to campers at the service building. Impact: Low.
Posted by the park 2026-10-15. Official alert
Overview
Willow River State Park is a 2,855-acre park in St. Croix County, about 4 miles northeast of Hudson.
The park supports canoeing and kayaking, hunting in season, boating, swimming, and biking. Camping is available: campsites, including tent sites.
Hours
Park, gate, office and facility hours are listed separately because they often differ. Alerts above override normal hours.
| Facility | Days | Hours | Season |
|---|---|---|---|
| Park | Daily | 6 a.m. – 11 p.m. | — |
| Daily | 6 a.m. – 11 p.m. | — | |
| Daily | 8 a.m. – 8 p.m. | During summer |
Official wording
Open 6 a.m. to 11 p.m. year-round. The park is open year-round from 6 a.m. to 11 p.m. During summer, the park office is open daily from 8 a.m. to 8 p.m.
Source: official park page, checked Oct 29, 2026. Times are local to the park (America/Chicago).
Pets
Pets allowed on a physical leash no longer than 8 feet at all times and under control; loose pets may be seized. Property-specific pet areas/restrictions appear on park pages.
Statewide rule from Wisconsin's park system (source). This park’s page doesn’t state its own pet rules, so check for local restrictions.
Fees and passes
Per vehicle, resident vs nonresident pricing: a vehicle admission pass is required on all motor vehicles stopping in state parks, forests and recreation areas (daily $13 WI / $16 out-of-state; annual $28 / $50; rates effective Aug. 19, 2025). State trails use a per-person trail pass for certain uses. Heritage Hill SP charges a per-person admission instead.
Statewide fee rule from Wisconsin's park system; this park’s page doesn’t list its own fees.
Wisconsin park passes
- 12-month vehicle admission pass (Wisconsin plates) — $28. All Wisconsin state parks, forests and recreation areas for 12 months Details
- 12-month vehicle admission pass (out-of-state plates) — $50. Same, nonresident vehicles Details
- 12-month pass, Wisconsin residents 65+ — $13. Resident senior vehicles Details
- 12-month reduced-rate pass (additional household vehicle) — $15.50 resident / $32.50 nonresident. Additional vehicles at the same household address; bought with a full-price pass Details
- Daily vehicle admission pass — $13 resident / $3 resident 65+ / $16 nonresident Details
From the Wisconsin state guide. Confirm which passes this park accepts.
Reservations
- Day use
- No day-use reservation requirement mentioned
- Booking system
- Wisconsin State Park System reservations (Camis 'Going to Camp')
- Phone
- 1-888-947-2757
We link to the official booking system rather than showing live availability, which changes minute to minute.
Camping
| Campground or site type | Sites | Hookups / features | Price |
|---|---|---|---|
| Standard campgrounds The 300 campground has 70 tent, trailer or motor home sites, flush toilets and showers. The 100 campground has another 50 sites. This new campground has few mature trees and no sites with full shade. The 100 campground can accommodate tents to the largest recreational vehicles.
The campground host site is on the right side of the 300 campground entrance road. The hosts provide information to campers.
• 300 campground map
• 200 campground map
• 100 campground map | — | Showers | — |
Camping details from the park
Willow River's campground, on the southern shore of Little Falls Lake, is very popular and has one of the highest occupancy rates in the Wisconsin State Park System.
Standard campgrounds: The 300 campground has 70 tent, trailer or motor home sites, flush toilets and showers. The 100 campground has another 50 sites. This new campground has few mature trees and no sites with full shade. The 100 campground can accommodate tents to the largest recreational vehicles.
The campground host site is on the right side of the 300 campground entrance road. The hosts provide information to campers.
- 300 campground map
- 200 campground map
- 100 campground map
Group camp: Willow River State Park has a group camp with four different areas that can be reserved.
- Group camp map
Firewood: Firewood is available at the park office during open hours. Campground hosts sell firewood from 7 to 8 p.m. in the 300 campground when in season. Fires are allowed in authorized grills and fire rings only. Do not leave fires unattended and extinguish all fires before leaving the campsite.
Don't move firewood!
From the official park page, checked Oct 29, 2026. Site counts and prices can change; confirm when booking.
Things to do
BikingBoatingCanoeing and kayakingCampingFishingHikingHuntingPicnickingSwimming
Amenities
Facilities
- Picnic areas
Camping
- Tent camping
✓ listed by the park · ✕ the park says it is not available. Anything not shown here isn’t mentioned by the official source — that means unknown, not unavailable.
Accessibility
Willow River State Park offers an accessible fishing pier. Accessible campsites are available in the “100” and “300” campgrounds. In addition, the Hidden Ponds Nature Trail is universally accessible. Accessible restroom facilities are available at the beach and in the campgrounds.
Official accessibility information
Conditions change. Contact the park to confirm specific accessible features before your visit.
Getting there
- Address
- 1034 Cty Hwy A
Hudson, WI 54016 - Nearest town
- Hudson — about 4 mi northeast (straight line)
- Coordinates
- 45.0124, -92.6784
- Phone
- (715) 386-5931
Google Maps directionsApple MapsOfficial park map (PDF)
Directions from the park
Get directions
Nearby state parks
Sources and freshness
- Wisconsin State Park System — park page — last checked Oct 29, 2026
- Wisconsin DNR 'Find a Park' directory (server-rendered Drupal view, ?page=0..5), filtered to /topic/parks/ property pages
- Wikidata
- USGS PAD-US 4.1 (boundary and acreage)
“Last checked” is when our system last read the official source. No change has been detected since this page was first published. Hours, fees and rules can change without notice — confirm with the park before you go. Methodology