Colorado River
Upper Colorado River (Pumphouse to Radium) River Guide
The Upper Colorado River offers a peaceful, scenic float trip perfect for families and first-time rafters seeking a more relaxed river experience. This gentle Class I-II section flows through pristine alpine meadows, rolling ranch lands, and towering canyon walls between Kremmling and State Bridge. With mostly calm water punctuated by occasional mild rapids, paddlers can focus on the stunning scenery and abundant wildlife including bald eagles, deer, and beaver. The mild nature and beautiful setting make it an excellent choice for young children and multi-generational groups.
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Current River Conditions
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Common Questions
What paddlers most often want to know about Upper Colorado River (Pumphouse to Radium).
Is the Upper Colorado River from Pumphouse to Radium suitable for beginners?
Yes — the Upper Colorado from Pumphouse to Radium is one of Colorado's best beginner and family multi-day float trips. The Class I–II water is gentle enough for young children and first-time paddlers while offering stunning high-alpine scenery through open meadows and ranch lands.
What class of rapids does the Upper Colorado River Pumphouse to Radium section have?
The Upper Colorado from Pumphouse to Radium runs Class I–II, with mostly calm water and occasional mild ripples. The focus of this section is scenic floating through pristine alpine meadows and ranch country near Kremmling, Colorado rather than technical whitewater.
Do I need a permit to raft the Upper Colorado River from Pumphouse to Radium?
No permit is required to raft the Upper Colorado River from Pumphouse to Radium. Multiple public access points are available along this stretch near Kremmling, Colorado.
What wildlife can you see on the Upper Colorado River near Kremmling?
The Upper Colorado near Kremmling is exceptional for wildlife viewing. Bald eagles and osprey are commonly seen fishing along the river; deer, beaver, and herons are regular sightings, and the broad meadows attract a diverse range of bird species throughout the season.
When is the best time to float the Upper Colorado River Pumphouse to Radium section?
The Upper Colorado from Pumphouse to Radium is most pleasant from May through September. Spring flows provide the most water and best fishing; summer is peak season for families; fall brings golden aspens and cooler temperatures with lower but still runnable flows.