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Dinosaur National Monument - Split Mountain Permits

Wilderness Permit

Overview

Day-use river float permit for the Split Mountain Canyon section of the Green River in Dinosaur National Monument, managed by the National Park Service. 9-mile day trip from Rainbow Park boat ramp to Split Mountain boat ramp (division 726). Class III whitewater -- notorious rapids, riffles, and stunning canyon views as the river cuts through Split Mountain. Proposed wilderness -- no motors or vehicles anywhere along the corridor. Primitive camping available at the Rainbow Park launch site (4 sites, 8 people each, no running water, vault toilet). Split Mountain take-out has reservable group campsites, vault toilets year-round, and a seasonal groover dump site. The dinosaur quarry -- with 149-million-year-old bones encased in rock -- is nearby.

Bottom Line

All FCFS, no lottery. Low season: 1 launch per day. High season (mid-May through mid-September): 2 launches per day. Permits are for a single launch on a single day. Each person may hold only 1 permit at a time, but there is no limit on how many 1-day trips you can take per year. The remote launch site and long drive times mean many groups camp at Rainbow Park the night before. Trip leaders must have Class III+ whitewater experience. Cancellation alerts are effective -- cancelled permits return to availability randomly within 24 hours. Check the /api/permits/ endpoint for current availability.

Reservations

Permit required year-round for floating Split Mountain Canyon. All FCFS:

Permits available on recreation.gov -- no lottery
Low season: 1 launch/day
High season (approx. mid-May -- mid-Sep): 2 launches/day
1 active permit per person at a time
Entire party must launch and take out on the date and at the location listed on the permit
Only one launch allowed on the day of the permit
Cancelled permits reappear randomly within 24 hours

Fees

$15 non-refundable reservation fee per permit
$20 recreation fee per permit (due at time of booking)
No refunds for cancellations within 30 days of launch date or after the permit has been issued

Group Size and Rules

Max group size: 25 people
Permit holder must be 18 or older
Permits are non-transferable -- the permittee must accompany the entire trip
Trip leader and boatmen must have working knowledge of whitewater safety, first aid, river equipment repair, and Class III+ whitewater navigation (Green/Yampa in Dinosaur, or comparable rivers such as the Rogue, Selway, Grand Canyon, Westwater, etc.)
Accurate passenger list must be on file at the River Office before launch -- no additions allowed at the launch site
Fishing requires a valid state license for the state you are fishing in
Firearms possession must comply with state law; use of firearms is prohibited
Boating under the influence is prohibited

Cancellation Policy