
Cataract CanyonMay 2015 (~20,000 cfs)
Cataract Canyon in a dory, Green River State Park to the Dirty Devil in five days, with the Big Drops run on a combined flow of about 20,000 cfs (20,060 daily mean, Potash + Mineral Bottom) and Lake Powell at about 3,590 ft. Button Hole pouring over, a deliberate left line at Big Drop 2 to stay clear of Mother-in-Law, and a right run through Big Drop 3 where the bottom waves are far bigger than the scout suggests.
Cataract in the dory had been eating at me for months, and the days around my birthday were the excuse. Nobody had the time. I was going anyway, alone, until Jordy called out of nowhere while I sat in Park City waiting on a job interview, and the solo run turned into two men and a hundred and twenty miles of Green River between the ramp and the first rapid. It rained on us at Green River. We ate at Ray’s and let it pass. What follows is a slow trip that got fast: three days of flatwater, canyon wrens, a kite, a beach that would stop existing a few years later, and then a morning I started with one working eye and about twenty thousand cubic feet a second waiting in the Big Drops. The left line around Mother-in-Law worked. Why it worked is something I only understood on a later trip.
Ray's, the rain, and Three Canyon in the dark
11,530 cfs (USGS daily mean) | Moab, UT: 55–74°F, 0.25in precip
I picked Jordy up and we tooled around Draper longer than I ever wanted to, long enough to admire the landscaping he’d done at his dad’s place, which was genuinely impressive, and to decide at Harmons that we needed a few more things. I was itching to start chipping at the hundred and twenty miles of Green between us and Cataract. Green River answered with a downpour. We sat it out at Ray’s with a burger and a beer, and it never fully cleared, but it missed us with the worst of it.
We rigged at the state park. Jordy’s friend turned up with ice cream. Jordy took out the trash. We launched late, into flat silver light under a low sky, oars shipped and a cup raised from the tiller, Crystal Geyser’s orange terraces sliding by on the left. Then we motored on into the dark on purpose. We needed Three Canyon, and we got it.
A good lazy morning, a kite, and eventually a lost beach
13,920 cfs (USGS daily mean) | Moab, UT: 50–77°F, 0.04in precip
Three Canyon in the morning was the good kind of slow. Wrens working the wall, Jordy asleep, me with a book about the Mississippi: a young Lincoln trading his way downriver, and the news that the big river once had real rapids before the locks and dams filed them off. We needed miles. The morning was better than miles.
Eventually we launched and spent day two moving through Labyrinth. Red Wingate, willow banks, groceries and a basketball riding the bow deck, the Green up to about 7,650 cfs. Then the wind came up, the way it does, and we did the only sensible thing: found a big beach and flew a kite. It worked too well. A couple of gusts had me off the sand. The kite went in the river; we went back in the boat.
Camp was a random sandy beach south of Mineral Bottom in Stillwater, a storm standing on the rim, and at dusk four jet skis and a small jet boat nosed into the tamarisk on the far bank, minding their own business.
The Confluence, beetles, and a stick in the eye
19,890 cfs (USGS daily mean) | Moab, UT: 58–77°F, 0.02in precip
A lazy day: a few aimless hikes and, eventually, the Confluence. The beetles had been at the tamarisk there, so we helped, pulling out the dead stuff until a clean sandy beach appeared underneath it. Fire, sunset over the Doll House, and somewhere in the stick-gathering one of them found my eye. I turned in early, early by Jordy’s standards anyway. He heated a pile of rocks, dug a pit, dropped them in, and slept warm.
One eye, the Big Drops at twenty thousand
20,060 cfs (USGS daily mean) | Moab, UT: 43–65°F, 0.15in precip
I woke up with one eye. The other had swollen shut overnight from the stick, which is not how you want to start rapid day, so we packed the dory slowly and let the morning give some of the vision back. It did, mostly. I was hyped anyway: Cataract, a buddy, the dory, and about 20,000 cfs on the combined gauges.
Jordy and I were good in the boat, high-siding and moving when we needed to move. Button Hole was pouring over. Not the exploding thing it becomes around 25,000 to 29,000, but plenty to flip a dory in a second; my read, then and now, is that this level spared the boat compared with what lives up there at higher water. A read, not a measurement.
Big Drop 2 I ran left on purpose. I didn’t trust myself to make the middle move around Mother-in-Law, so it was left through the ledge wave and left of Mother-in-Law, and the line worked. Years later I figured out why: this was just enough water to float a dory over the pyramid rock on river left below the ledge wave. I didn’t know that in 2015. That July, on the same line, I found the rock.
We crossed to the Big Drop 3 beach (Kolb Camp) to scout and ran right. The bottom waves are a lot bigger than they look from up there. It tossed us around and gave us a fight; we worked together and came out upright. I’m pretty sure we floated down to Waterhole Canyon and camped. I’d been staying there because good beaches had been forming, beaches that are gone now, moved on downstream. By four the boat was tied off under a wind-rippled sand bank, driftwood stranded high on the cobbles. A fire in the pan and a headlamp on the kitchen table was the whole camp.

One eye, the Big Drops at twenty thousand
Boat tied off below a wind-rippled sand bank — camp reconnaissance on the fourth day.

Weather, the lake, the old ramp
19,800 cfs (USGS daily mean) | Moab, UT: 50–66°F
Morning came in grey, the storm sitting on the walls and the boulders at the waterline the only color left. We motored out. Jordy spent the slack water flat on the deck in full rain kit, hood up over his ball cap, waiting out the weather from inside the boat while the Honda pushed us down toward the Dirty Devil. Lake Powell sat at 3,590 feet. At North Wash I backed the trailer down the old ramp and winched the dory out: steep, not crazy, before the big downcutting.
- Big Drop 3 right run at about 20,000 cfs: the bottom waves are substantially larger from inside the boat than they appear from the scout.
- Button Hole was pouring over at about 20,000 cfs (May 9, 2015) — activated, and capable of flipping a dory, well below the 25,000–29,000 range where it thrashes.
- At Big Drop 2 around 20,000 cfs, a left line (ledge wave, then left of Mother-in-Law) worked when the middle move was uncertain. Later read: this flow was just enough to float a dory over the pyramid rock on river left below the ledge wave — not known at the time; on the July 2015 run (cataract-canyon-2015-07) the same left line found that rock.
Dory with 2.3hp motor for flatwater and reservoir transit to Dirty Devil takeout.
Colorado at Potash: 5,860–12,900 cfs (avg 10,194)
Green at Mineral Bottom: 5,670–7,700 cfs (avg 6,846)
Combined: 11,530–20,060 cfs (avg 17,040)
Lake Powell: 3589.85 ft at launch (3589.82–3590.39 ft during trip). USBR RISE API — Lake Powell at Glen Canyon Dam
Weather: Moab, UT, 43–77°F, 0.46in precip. NOAA GHCN-Daily
Evidence behind the claims on this page — agency rules, maps, gauges, books, and field notes.
Permits
Hydrology
All 14 field sources
Access
Rapids
- book-excerpt Cataract Canyon (Webb / Belnap / Weisheit) — Selected Pages
- book RiverMaps Guide to the Colorado & Green Rivers in the Canyonlands of Utah & Colorado
Management
Books
Safety
- book-excerpt Cataract Canyon (Webb / Belnap / Weisheit) — Selected Pages

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Desolation Canyon — March 2026
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