Interstate State Park, St. Croix River
River · Wisconsin
ℹ️ Community-reported spot. Details below are compiled from public sources and are reported to be accurate — always verify locally before visiting.
About this swimming hole
Wisconsin's Interstate State Park sits across the St. Croix from its Minnesota twin, with river swimming at the Dalles. The basalt cliffs and glacial potholes frame the swim with Ice Age geology. It pairs naturally with a two-state park day.
Good to know
| Water type | River |
|---|---|
| Water temperature | 70s in summer |
| Depth | river swimming |
| Best season | June-August |
| Fees | WI state park vehicle sticker required |
| Reservations required | No |
| Parking | state park lots |
| Amenities | hiking trails, campground, restrooms, picnic areas |
| County | Polk County |
| Nearest town | St. Croix Falls |
| Safety notes | no lifeguard; river current |
Map
Nearby swimming holes
Frequently asked questions
Does Interstate State Park, St. Croix River require reservations?
No reservations are required at Interstate State Park, St. Croix River based on current information — but verify before you go.
Is there a fee to visit Interstate State Park, St. Croix River?
Reported fee info: WI state park vehicle sticker required. Fees can change — confirm with the official link.
When is the best time to visit Interstate State Park, St. Croix River?
The best season is typically June-August.
⚠️ Verify before you go. Conditions, fees, reservations, and access can change — confirm details with the official link before visiting. Last verified: September 2026