#1 Rated Long Term RV Park near Beaver Dam
Willow Mill Campsite near Beaver Dam, Wisconsin
CALL US TODAY (920) 992-1212Welcome to Willow Mill Campsite — a seasonal home on the water in Rio, Wisconsin, and one of Columbia County’s best-kept secrets since 1968. Rio calls itself Camper Country USA, and Willow Mill has been part of that identity for decades. Our long term sites are large and shaded, with picnic tables and fire rings, and the community here has a warmth to it that builds over a season. We sit about 30 miles northeast of Madison along County Highway SS, close enough to the city for work or errands, far enough to feel like you’ve actually left. We’re glad you found us.
Amenities with long term campers in mind.
When you’re here for a full season, the practical stuff really matters. We have laundry facilities, private bathrooms open 24/7, a dump station, propane refills, and free WiFi near the camp store — everything you need without running into town for every errand. The camp store carries RV supplies, firewood, ice, and everyday essentials. Beyond the logistics, we also have a pool that’s open all summer, kayak rentals, mini golf, a game room, a pavilion, and a clubhouse. And don’t worry, we’re pet friendly with a dog park on the property for your four legged family members! Head to our amenities page for the full list.
Endless entertainment with nearby local attractions.
Rio’s location puts you within easy reach of major employment centers and attractions across the region. Madison sits just 30 minutes away for work assignments or city amenities, while Wisconsin Dells offers seasonal employment opportunities in the tourism industry. Travel nurses, construction crews, and full-time RVers choose our park for convenient access to Pardeeville and surrounding communities via nearby highways. Contact Carol at (920) 992-1212 to discuss your long-term stay needs and secure your spot at Willow Mill Campsite.
