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Whitewater threading between house-sized boulders at Three Fords Rapid at low water.
River Trip · Green River · 84 miles

Desolation Canyon

The Green from Sand Wash to Swaseys is the centerpiece of the Desolation Canyon Wilderness Study Area, the largest the BLM manages in the lower 48.

The full Desolation–Gray trip covers 84 miles of the Green River from Sand Wash to Swaseys Boat Ramp. The upper 58 miles through Desolation Canyon are a wilderness study area, with no road to the river for most of their length. The canyon deepens steadily through the Tavaputs Plateau, with rapids building from easy riffles to solid Class III by the final third.

Gray Canyon adds 26 miles of tighter, faster water through the Price River Canyon before the take-out at Swaseys. Most groups run it in 5–7 days, camping on sand benches and exploring side canyons with Fremont rock art and historic ranches.

Sand Wash to Swaseys

The only route through Desolation and Gray: eighty-four miles from the Sand Wash ranger station to Swaseys Boat Ramp. The whitewater builds from riffles to Joe Hutch deep in Desolation, then Three Fords and the Gray Canyon rapids. River left is closed from Sand Wash to Coal Creek, the Uintah and Ouray Reservation, so camp and hike on river right. A lottery permit, three calendar days minimum. The shuttle takes about five hours by Myton or Nine Mile Canyon. No resupply once you launch.

Distance
84 miles
Typical days
6

The geography underneath

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

Green River

The journey

What the water is doing

Desolation Canyon

In the canyon now — cfs Green at Ouray + White at Watson + Duchesne at Randlett, summed

Bands keyed to Green at Ouray + White at Watson + Duchesne at Randlett, summed

800–4,500 cfs Low

Mellow flatwater sections become shallow. Some dragging.

4,500–16,000 cfs Optimal

Classic desert float. Consistent current, engaging rapids.

16,000+ cfs High

Fast and pushy. Campsite availability changes. Great for experienced crews.

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

Gray Canyon

In the canyon now — cfs Green at Ouray + White at Watson + Duchesne at Randlett + Price at Woodside, summed

Bands keyed to Green at Ouray + White at Watson + Duchesne at Randlett + Price at Woodside, summed

1,500–3,000 cfs Low — manageable

Runnable but slow and technical in places. More rock exposure.

3,000–8,000 cfs Medium — classic Gray character

Best conditions for most groups — good wave trains, defined lines, manageable consequence.

8,000–25,000 cfs High water

Experienced crews in strong craft. Powerful hydraulics and faster travel. Eddy access requires planning.

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

Permit

Access

Put-in
Sand Wash Ranger Station and Boat Launch
Take-out
Swaseys Boat Ramp

Shuttle

Sand Wash Ranger Station and Boat Launch to Swaseys Boat Ramp

Via Myton

Road miles
181
Drive time
5.2 hours

US-40, Duchesne, Indian Canyon and Price. About an hour of dirt; BLM's preferred route in the wet.

Recreation.gov recommends this route for the rest of the 2026 boating season. Recreation.gov

Open directions

Via Nine Mile Canyon

Road miles
132
Drive time
4.8 hours

Wrinkles Road and Gate Canyon to Nine Mile Canyon and Wellington: shorter, with about three hours of dirt, many twists and blind curves, and the rock art of the Nine Mile Canyon Backcountry Byway.

Gate Canyon road work: closed 8am–noon weekdays from October 19, 2026, with multi-hour delays. Recreation.gov

Open directions

Google timed this for a car on a good day. Our figure runs about 20 percent longer, because a raft trailer behind a loaded rig does not take washboard, potholes, pitted pavement, or dirt that turns to grease in the rain at Google's speed.

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