The Colorado runs ten sections in Utah, and they sort into three trips. The upper corridor is Ruby–Horsethief plus Westwater: 41.6 miles, three or four days, Class I water and then Class IV. The Moab reaches, Cisco to Potash, are day floats with no permit. The expedition is Meander Canyon into Cataract Canyon and out through Narrow Canyon: 95 miles from Potash to the North Wash ramp. Pick the trip that fits your days and your whitewater, then open its permit page. That is the whole decision.
The corridor at a glance
Downriver order, resolved from the section records. Class is the range across the section at runnable flows. Days are the typical count for that section alone.
| Section | Miles | Class | Days | Permit |
|---|---|---|---|---|
| Ruby–Horsethief | 25 | I–II | 2 | Permit required |
| Westwater Canyon | 17.2 | III–IV | 1 | Permit required |
| Cisco to Dewey Bridge | 16.1 | I | 1 | No permit |
| Dewey Bridge to Hittle Bottom | 6.3 | I | 1 | No permit |
| Professor Valley | 13.8 | I–II+ | 1 | No permit |
| Take Out Beach to Moab Bridge | 10 | Flatwater | 1 | No permit |
| The Portal | 17 | Flatwater | 1 | No permit |
| Meander Canyon | 48 | I | 3 | Permit required |
| Cataract Canyon | 40 | II–IV+ | 3 | Permit required |
| Narrow Canyon | 7.5 | I | 1 | Permit required |
Below Narrow Canyon is Glen Canyon, now Lake Powell, and below the Glen Canyon Dam at Page, Arizona is the Grand Canyon.
Three trips. Pick the one your days fit.

Trip 1: the upper corridor
Ruby–Horsethief from Loma to the Westwater ranger station, then Westwater to Cisco. 41.6 miles. Two days of Class I–II under Wingate walls with one night in the canyon, then one long day of Class III–IV through black Precambrian gneiss and schist, with Skull Rapid as the crux. Stage vehicles at Cisco and run both back to back. Plan A is the combo. Plan B is Westwater alone in a day.
Days: 3–4. Whitewater: Class IV, one day of it. Permits: an advance reservation to camp on Ruby–Horsethief, an advance reservation for every Westwater launch, both through the BLM on recreation.gov, group cap 25. Gauge: Cisco. Westwater is technical below 3,000 cfs and expert-only above about 12,000. Season: April to June for flow, September to November for empty water.

Trip 2: the Moab day floats
Five reaches between Cisco and Potash, all Class I–II, all paved shuttles on UT-128 and Route 279, none of them permitted. Professor Valley is the one people mean by the Moab Daily: 13.8 miles from Hittle Bottom to Take Out Beach past Big Bend and Rocky Rapid. Above it, 16.1 miles of open badlands from Cisco and 6.3 miles from Dewey Bridge. Below it, 10 miles through town, then The Portal, 17 miles of the best walls you can see from a canoe above Lake Powell, ending at Potash.
Days: one each, or stack two. Whitewater: Rocky Rapid, Class II+, in spring. Permits: no permit. Camp only in the designated Riverway campgrounds below Dewey. Gauge: Cisco plus the Dolores at Cisco. Season: April to October. Expect commercial traffic on Professor Valley in June and July. This is the first Colorado trip for most people, and it should be.

Trip 3: the expedition
Potash, Meander Canyon, the Confluence, Cataract Canyon, Narrow Canyon, North Wash. 95 miles, 4 days typical for a private raft party, longer with side hikes or wind. 48 miles of flatwater, then the Big Drops, then a row-out whose length depends on Lake Powell's elevation. The Green River approach, Stillwater Canyon from Mineral Bottom, is 101 miles to the same ramp under the same permit. How to plan the whole trip is its own article.
Days: 4–7. Whitewater: Class III–IV in the classic band. Above 50,000 cfs, Webb, Belnap and Weisheit warn, the canyon can be very dangerous and boats frequently flip. Permits: an advance reservation through National Park Service, one overnight permit covering Meander, Cataract, and Narrow Canyon. Gauge: Potash plus Mineral Bottom, summed. The classic band is 10,000–20,000 cfs; above 50,000 outfitters change tactics or cancel. Shuttle: Potash to North Wash, about 163 road miles via UT-24 and UT-95, through Hanksville. Season: May and June for the Big Drops, April and September to October for permits and cooler days.
If it's your first Colorado trip
The Moab Daily in May, when Rocky Rapid has a wave train. First overnight: Ruby–Horsethief in September. Westwater when you can read a Class IV line from shore. Cataract when someone on the boat has already run it.







