The river Moab
Forty four miles upstream, seventeen down, and four kinds of water
The Colorado through Moab.
Two state routes that follow the water in opposite directions and charge nothing, a 1916 suspension bridge lost to a brush fire in 2008, a slab of tracks left by at least ten meat-eating dinosaurs, 17 miles of Class IV on a permit rationed to five launches a day, and sixteen million tons of tailings hauled off the north bank by rail.
Southern Utah is my home turf. Moab is not, so these pages are researched rather than lived: checked against city, county and venue sources, and dated so you can see how fresh they are. For the on-the-ground work here I lean on a Grand County partner agent.
Start here
The river is the reason the town is where it is.
Moab exists because a valley opens onto a crossing point. The Colorado runs along the northern edge of that valley and everything about the place organises around it: the highway crosses it, two scenic byways follow it, the potash operation draws on it, and the recreation economy that carries the town starts at its bank.
Two state routes run the corridor and they go in opposite directions from the same stretch of US-191. SR-128 heads upstream to the northeast for 44 miles as the Upper Colorado River Scenic Byway. SR-279, Potash Road, heads downstream to the southwest for 17 miles beneath a continuous cliff. Neither charges anything and between them they carry most of the free things worth doing near Moab.
The water itself divides into four distinct propositions that get lumped together as rafting the Colorado. There is the mild stretch through the Fisher Towers country, there is Westwater Canyon with 17 miles of Class IV, there is flatwater below town, and there is Cataract Canyon below the confluence, which is a multi-day expedition on a National Park Service permit. Picking the wrong one of those is how a family day out becomes something else.
The corridor at a glance
44 mi
SR-128, the Upper Colorado River Scenic Byway
17 mi
SR-279 downstream, and 17 miles of Class IV upstream
1916
the year the Dewey Bridge was built
16 million
tons of tailings moved off the north bank by April 2026
The two byways
Forty four miles upstream, seventeen miles down, and nothing to pay on either.
SR-128 leaves US-191 two miles north of Moab and runs 44 miles upstream, part of the route signed as the Dinosaur Diamond Prehistoric Highway. The first stretch is pinned between the water and the wall with no shoulder at all, then the canyon opens into the Castle Valley country with the Priest and Nuns and Castleton Tower standing out of the bench to the south, and then the Fisher Towers appear on the left, several hundred feet of dark red mudstone spires rising out of the talus.
The Fisher Towers trail runs roughly four and a half miles out and back through the base of them, on exposed ground with real drops, and it is considerably more interesting than the car park suggests. The last two miles of access road are unpaved and ordinarily fine for a passenger car when dry, which is a sentence that needs the qualifier in this country.
Twenty eight miles up the byway are the remains of the Dewey Bridge. It was built in 1916, ran 502 feet, and was the longest suspension bridge in Utah until April 2008, when a child playing with matches in the campground beside it started a brush fire that burned every wooden part of the structure. The towers and cables are still standing. It is a quiet stop and it lands harder than most interpretive signs manage.
SR-279 is the one with the archaeology on it
Potash Road runs 17 miles downstream under a wall that never lets up. About five miles in, marked pullouts sit below a run of petroglyph panels on the cliff face. A little further, past the Poison Spider car park, a signed viewing station looks onto a slab carrying the tracks of at least ten different meat-eating dinosaurs, ranging from 17 inches to five feet at the hip. Around ten miles in is the trailhead for Corona and Bowtie arches, a three mile round trip with a ladder and a cable handline in it. All of it is free BLM ground.
Driving both, honestly
SR-128 is the better drive and SR-279 is the better hour, if you only have one. The upstream byway is 44 miles to the I-70 end and the return makes it most of a half day, while the downstream road is a short out and back that packs rock art, dinosaur tracks and a major arch into fourteen miles. Both are narrow, both are shared with cyclists, and neither has fuel or a shop anywhere along it.
The longest suspension bridge in Utah stood for ninety two years and was lost to a brush fire started by a child with a box of matches.
On the water
Four stretches, and they are not versions of each other.
The phrase rafting in Moab covers everything from a lazy afternoon float to a Class IV canyon on a rationed permit. This is which is which, and what each one asks of you.
| Stretch | What it is | Permit | Who it suits |
|---|---|---|---|
| The daily, Fisher Towers to Moab | Moving water, mild rapids, big walls | Outfitter handles it, or a simple private launch | Almost anybody, half a day |
| Westwater Canyon | 17 miles, Class IV, the first whitewater in Utah | Required year round, rationed, non-refundable | Experienced boaters or a commercial trip |
| Flatwater below town | Calm river, canoe and paddle board country | None for the flat sections | Beginners, wildlife, a slow morning |
| Cataract Canyon | Below the confluence, multi-day expedition | National Park Service river permit | A planned trip, not a Moab day out |
Flows change every one of these through the season. The BLM Moab Field Office on 435-259-2100 is the number for current conditions before any private launch.
Westwater is the one with the rules worth reading. It is the first genuine whitewater stretch on the Colorado in Utah, 17 miles of Class IV inside a dark inner gorge, and a permit is required every day of the year. There is no lottery: private permits are released on Recreation.gov two months ahead of the launch date at 8am Mountain and taken first come. Between 1 April and 30 September private use is capped at five permits or 75 people a day, whichever comes first, and between 1 October and 31 March that rises to seven permits or 150 people.
The mild daily stretch upstream of Moab is the one most visitors actually want, and going with an outfitter on it is the sensible default rather than the beginner's compromise. It removes the shuttle problem, which on a corridor with a single road along it is more awkward than it sounds, and it puts somebody in the boat who knows what the flow is doing that week. Outfitters fill in spring and autumn alongside the lodging.
The working river
Sixteen million tons moved off one bank, by rail.
For decades the most consequential thing on the Colorado at Moab was not recreational. A uranium mill operated on the north bank from the 1950s, and it left a tailings pile of roughly sixteen million tons of residual radioactive material sitting on the floodplain immediately upstream of town. The Moab Uranium Mill Tailings Remedial Action project has been hauling it, by rail, to an engineered disposal cell at Crescent Junction thirty miles north.
On 9 April 2026 the project marked the removal of the full sixteen million tons and the clearing of the pile off the riverbank. About a million tons of contaminated soil and debris remain to follow, and work continues on the final cover systems at the Crescent Junction cell. If you have wondered why freight moves through this valley on a schedule that has nothing to do with tourism, that is the answer, and it is close to the end of it.
Downstream, the potash operation is the other industrial presence. Its solar evaporation ponds sit on the river bench at the end of SR-279, dyed blue to speed evaporation and startling from above, and the road that carries the Corona Arch trailhead and the dinosaur tracks exists to serve them. This is worked country with recreation laid over the top of it rather than wilderness with an industry intruding.
The water under the town, which is the harder story
The river is not Moab's drinking water. The city's culinary supply comes entirely from the Glen Canyon Group aquifer, and a 2020 estimate published in the Journal of Hydrology put annual recharge to the deep portion at under 4,000 acre feet against roughly 3,600 acre feet already withdrawn each year across all the entities drawing on it. Read those two figures together and you have the constraint under every growth argument in Grand County.
The monsoon does not need to rain on you to put water in the wash you are standing in. From roughly July into September, afternoon storms build over the plateau and drop onto slickrock that absorbs almost nothing. A drainage that is dry sand at noon can be running hard an hour later from a storm miles upstream and out of sight behind a cliff. That applies to every side canyon off both byways, to the Corona Arch approach and to any slot. Check the forecast for the whole region rather than for the town, and if water is rising, climb rather than run downstream.
Keep reading
More of Moab on The Local.
Things to do
The top 11, ranked
Eleven picks, ranked, each with a fact block and an honest read on the season.
Read the guideFive miles north
Arches, and the year the gate opened
No timed entry in 2026, a 30 dollar gate, and two Fiery Furnace permits that still sell out.
Read the guideThe mesa
Canyonlands, Island in the Sky
A mesa 1,000 feet above the rest, and a 100 mile road no passenger car can start.
Read the guideThe rock itself
Slickrock and the Sand Flats
A 10.5 mile loop cut for Honda Trail 90s in 1969, on 9,000 acres run by fees alone.
Read the guideEaster week
Easter Jeep Safari
Nine days in March 2027, 75 dollars a trail day, and a town running at capacity.
Read the guideThe high country
The La Sal Mountains
A 60 mile loop under a 12,721 foot peak, and the only cool air within an hour in July.
Read the guideThe paperwork
Permits, passes and entry
Every gate fee, permit window and release date around Moab in one place, dated.
Read the guideThe state park
Dead Horse Point
A state park 2,000 feet above a gooseneck, 20 dollars in, booked solid March to November.
Read the guideMoving here
Living with the season
Nightly rental decided parcel by parcel, an aquifer with no slack, and a wage gap.
Read the guideThe companion
Moab, in full
Two national parks, a river, a mountain range, and a season that runs the town.
Read the pageQuick answers
The river, answered.
There are two, going opposite directions from US-191. SR-128, the Upper Colorado River Scenic Byway, runs 44 miles upstream to the northeast past Castle Valley, the Fisher Towers and the remains of the Dewey Bridge, and it is the finest drive in Grand County. SR-279, Potash Road, runs 17 miles downstream to the southwest beneath a continuous cliff, carrying petroglyph pullouts, a dinosaur track viewing station and the Corona Arch trailhead. Neither charges anything and neither has fuel or a shop on it.
It depends entirely on the stretch. The mild daily run through the Fisher Towers country and the flatwater below town do not require a rationed permit, and most visitors do them with an outfitter who handles the paperwork. Westwater Canyon requires a permit every day of the year, released through Recreation.gov two months ahead of the launch date at 8am Mountain, taken first come with no lottery, and non-refundable. Cataract Canyon below the confluence runs on a separate National Park Service river permit.
Between 1 April and 30 September private use is limited to five permits or 75 people per day, whichever comes first. From 1 October through 31 March that rises to seven permits or 150 people per day. Westwater is 17 miles of Class IV water and is the first genuine whitewater stretch of the Colorado in Utah. Permits are non-refundable and there is no lottery, so the release two months out is where the competition happens. The BLM Moab Field Office on 435-259-2100 handles current conditions.
It burned in April 2008. The bridge was built in 1916, ran 502 feet, and was the longest suspension bridge in Utah, carrying SR-128 across the Colorado about 28 miles up the byway from Moab. A child playing with matches in the campground beside it started a brush fire that destroyed every wooden part of the structure, including the full-length wooden deck. The towers and cables survive and the site is still a stop on the byway, with interpretive signage explaining what stood there.
On SR-279, Potash Road, downstream from town, at a signed viewing station just past the parking for the Poison Spider trail. The lower slab carries the tracks of at least ten different meat-eating dinosaurs, ranging in size from 17 inches to five feet at the hip. About five miles in from the US-191 junction, marked pullouts on the same road sit below several panels of prehistoric petroglyphs on the cliff above. Both are on BLM land, both are signed, and neither costs anything.
No, and that surprises people given the name and the size of it. Corona Arch is on BLM land off SR-279, about ten miles down Potash Road from the US-191 junction, reached on a three mile round trip that includes a short ladder and a length of cable handline across sloping rock. There is no gate, no fee and no reservation. Bowtie Arch sits beside it. The route crosses an active railway line at the start, the track that serves the potash operation further down the road.
The residue of a uranium mill that operated on the north bank of the Colorado immediately upstream of town from the 1950s, leaving roughly sixteen million tons of residual radioactive material on the floodplain. The Moab Uranium Mill Tailings Remedial Action project has been hauling it by rail to an engineered disposal cell at Crescent Junction thirty miles north, and on 9 April 2026 marked the removal of the full sixteen million tons. About a million tons of contaminated soil and debris remain to follow it.
Not from the river. The city's culinary supply comes entirely from the Glen Canyon Group aquifer, drawn from springs and deep wells. A 2020 estimate published in the Journal of Hydrology put annual recharge to the deep portion of that aquifer at under 4,000 acre feet, against roughly 3,600 acre feet already withdrawn each year across all the entities using it. That arithmetic is the constraint underneath every growth and development argument in the valley, and it is why conservation here is a rule rather than a suggestion.
Late spring through early autumn for most trips, with the character of the water changing sharply across that window. Snowmelt drives high flows in late spring, which makes the whitewater bigger and the mild stretches faster, and by late summer levels drop and the trips get gentler and warmer. Outfitters run through the season and fill in the same weeks the lodging does, which is March through May and September through October. Check flows with the BLM Moab Field Office before any private launch.
The river runs past the town. The town is the question.
A corridor carrying two national parks, a working potash plant and a decades-long federal cleanup produces an unusual property market. The live questions are which entity pipes water to an address, which zone it falls in, and how a service wage base meets these prices. Outline what you are after and a Grand County partner agent handles the ground, while the research and the lending stay with me.
Referral disclosure. Outside Southern Utah, I connect home sellers and buyers with partner agents I trust in their area. If you choose to work with an agent I refer, that agent's brokerage pays my brokerage (Real Broker, LLC) a referral fee. The fee comes out of the agent's compensation; it is not an added cost to you. You are always free to choose any agent you wish, and using a referred agent is never required.
One role per purchase, never both. How I work has the detail.