St. Vrain State Park offers diverse outdoor recreation across its lakes, wetlands, and open spaces, providing excellent opportunities for fishing, hiking, wildlife viewing, and camping near Longmont, Colorado.
St. Vrain State Park is located in northern Colorado, encompassing over 1,100 acres of recreational lands centered around two reservoirs: Union Reservoir and Joe Wright Reservoir. The park’s landscape features prairie grasslands, wetlands, and brush-covered hills that provide varied habitats for an array of wildlife species, including herons, bald eagles, and various waterfowl. Established in 1964, St. Vrain remains a popular destination for anglers targeting trout and warm-water species, as well as non-motorized boating. The park offers over 14 miles of multi-use trails for hiking, biking, and horseback riding. Birdwatchers appreciate the park’s wetlands and riparian zones, which attract migratory and resident birds throughout the year. Popular recreational activities include camping at its two developed campgrounds with full amenities, kayaking, paddleboarding, and wintertime ice fishing. The park’s proximity to the city of Longmont makes it an accessible outdoor escape for residents and visitors alike. Facilities include picnic areas, fishing docks, boat ramps, and a swim beach. The park’s setting in the Front Range foothills creates scenic vistas of nearby mountains and expansive sky views during sunset and sunrise. St. Vrain State Park combines water-based recreation with trail access and wildlife observation to provide a well-rounded park experience in a semi-arid environment. Visitors are encouraged to respect wildlife habitats and adhere to park regulations to help maintain its ecological health and recreational value.
Union Reservoir – a popular fishing and paddle sports destination
Wetlands providing excellent birdwatching opportunities
Developed campgrounds with full amenities near the reservoirs
Multi-use trails winding through diverse prairie and riparian habitats
The larger of the two reservoirs, known for trout and warm-water fishing along with non-motorized boating opportunities.
A quieter lake area preferred for paddling and shoreline fishing, surrounded by natural prairie habitat.
Network of over 14 miles of multi-use trails suitable for hiking, biking, and horseback riding through varied terrain.