St. Croix State Park's backpack campsites sit deep in 34,000 acres of northern hardwood and pine forest along the St. Croix and Kettle rivers. These primitive, hike-in sites are scattered through remote forest and river corridors at roughly 1,119 feet elevation. The park is vast and largely undeveloped, so you'll need maps and a plan before heading out.
Secondary sources identify these as walk‑in/backpack sites within a large, remote park—i.e., primitive backcountry camping rather than drive‑in RV/tent sites.
Portions of the park contain CCC, WPA, and Veterans' Conservation Corps structures from the New Deal era. The St. Croix Riverway has national scenic and historic designations. The landscape lies on ancestral lands of regional Indigenous peoples. Weather and SeasonsSummer brings daytime highs in the 70s–80°F and cool nights in the 50s–60s, with dry trails and the longest daylight for multi-day loops. Spring runoff makes rivers high and trails muddy or marshy, especially in low-lying areas. Mosquitoes and ticks are heavy in warm months. Fall offers the best balance: cooler temperatures, fall color across the hardwoods, and fewer bugs. Winter is harsher and limits trail access, suitable only for experienced cold-weather campers.
Natural Features and SceneryThe campground sits within a sprawling wilderness of mixed northern hardwood and pine forest, cut by the St. Croix National Scenic Riverway and the Kettle River. Low bluffs rise from floodplain forest and marshy lowlands. The 100-foot fire tower offers views above the canopy, and the Kettle River Highbanks trail runs along a woodland bluff over the river. Backpackers routing trips near the Two Rivers trail can see both the Kettle and St. Croix, with good odds of spotting white-tailed deer, beavers, otters, raptors, and waterfowl. Black bears are present. The area is designated an Important Bird Area. Sites near the rivers sit in floodplain forest; those farther inland are surrounded by pines and hardwoods.
Geological RegionSt. Croix River valley / park bordered by the St. Croix National Scenic Riverway and the Kettle River (mixed northern hardwood and pine forest with low bluffs, floodplain forest and marshy areas).
Scenic ViewsNotable park views include the Kettle River Highbanks overlook, the Two Rivers area where the Kettle and St. Croix meet, and panoramic vistas from the park's fire tower; backpack routes can be planned to incorporate riverside and bluff viewpoints.