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Two oar rafts, one yellow and one gray, floating side by side on flat muddy water beneath tall buff sandstone cliffs in Yampa Canyon.
River Trip · Yampa River · 72 miles

Yampa River

The last undammed major tributary of the Colorado — Deerlodge Park to Split Mountain, Warm Springs in the middle, the complete Dinosaur traverse.

The Yampa is the last major free-flowing tributary of the Colorado River. The snowmelt comes off the Park Range and the Flat Tops, fills the channel, and runs through Dinosaur National Monument the way every river in the West used to run before the Bureau of Reclamation rebuilt the hydrology of the continent. That fact alone makes this trip significant — but the canyon delivers on it.

Seventy-two miles from Deerlodge Park to Split Mountain: down the Yampa past Warm Springs, then into the Green at Echo Park and on through Whirlpool Canyon and the Split Mountain Gorge. This is the complete Dinosaur traverse. It is the trip that the conservation movement made possible, through the canyon system they chose to protect instead of Glen Canyon.

Deerlodge Park to Split Mountain

The complete Dinosaur traverse: seventy-two miles from Deerlodge Park down the Yampa through Warm Springs to Echo Park, then the Green through Whirlpool Canyon, Island Park, Rainbow Park, and the Split Mountain gorge to the paved ramp at Split Mountain Campground. The Yampa half takes four to five days and the Green half two to three. One NPS lottery permit covers the whole route. The shuttle isn't too bad, easier than Lodore. Spring is the only season the Yampa reliably runs.

Distance
72 miles
Typical days
7

The geography underneath

One recognizable trip, 6 named river sections across 2 rivers. The trip has one name; the river carries you through more geography than that name reveals.

Yampa River
Green River

The journey

What the water is doing

Bands keyed to Yampa River at Deerlodge Park, CO

500–2,500 cfs Low — technical but runnable

Technical and rocky at Warm Springs. Slower trip overall. Still valuable.

2,500–12,000 cfs Medium — classic Yampa conditions

The best range for most groups. Warm Springs is a powerful Class IV but lines are clear.

12,000+ cfs High to flood — expert only

Warm Springs is severe; above 20,000 cfs is flood stage. Expert paddlers in properly rigged boats only.

Flow knowledge is owned by the Yampa Canyon section record — full flow spectrum and history there.

Permit

Access

Put-in
Deerlodge Park Boat Ramp
Take-out
Split Mountain Boat Ramp

Shuttle

Deerlodge Park Boat Ramp to Split Mountain Boat Ramp

Long shuttle: Deerlodge Park, at the end of a paved road off US-40, to the Split Mountain Boat Ramp near Jensen, UT. Shuttle services run from Vernal.

Camp Kitchen

The cooler sets the menu. Fresh food goes first and the last nights come from the pantry, so plan the meals backward from the final dinner.

Dinner Ideas by Trip Day