Sauk
2 - Whitechuck River to Darrington
| Difficulty | III+ |
| Length | 10.5 mi |
| Avg Gradient | 42 fpm |
| Permit | As of 2018, a Federal Forest Pass is required at the Whitechuck boat launch. You can purchase a day pass, use a NW Forest Pass, or a multi-agency pass (that includes National Parks and other Federal land aside from USFS). |
| Gauge | Sauk River Near Sauk, Wa |
| Flow Rate as of 26 minutes | 2990 cfslow runnable |
| Reach Info Last Updated | February 12, 2023 |
Projects
Beginning high in the North Cascades, the Skagit Wild and Scenic River winds down steep slopes, through forested hillsides and wide open valleys, eventually reaching Puget Sound. The rivers of this system – the Skagit, Sauk, Suiattle, and Cascade – flow through rugged wilderness, forestlands, rural communities, farmlands, and [...]Read More
River Description
Season: Can be run with winter rains when the freezing level is not too low (November is often good but any good rain event will bring it up). A consistent performer through the spring snow melt and into early summer (typically April through July).
Description
The Sauk is part of the Skagit Wild and Scenic River system and is one of the most scenic intermediate runs on the west side of the Cascades. Over the course of the run you will be treated to a forested river corridor with just a couple glimpses of the road and a few cabins near Backman County Park. Most of the rest of the river corridor is in conservation status and the Forest Service has done an exceptional job of implementing the river management plan and providing good river access. On clear days the views are exceptional with Mt. Pugh towering above in the first half of the run and great views of Whitehorse Mountain near the end of the run.
The Sauk provides good continuous class III action. In the past, Jaws was considered a class IV but it has mellowed out since the 2003 floods rearranged the channel and opened up the line. The main hazards are trees which extend out from the banks, a couple large holes that can swallow inattentive paddlers, and at higher water long swims are a possibility. This is an excellent intermediate run that also provides some fun waves and play spots for more advanced paddlers.
White Chuck to Backman County Park, 7.5 miles
Starting at the confluence with the White Chuck, the river starts off through a number of class III rapids separated by short recovery pools (which become smaller as the discharge increases). There are numerous catch-on-the-fly surf waves.
The one rapid that is somewhat challenging to boat scout is Jaws. It comes approximately 2 miles into the trip where some large boulders create a couple holes and large waves toward river right. The route through is fairly straightforward and
...River Features
Whitechuck River Access Put In
This access facility is administered by the US Forest Service and is located on river right immediately downstream of the Whitechuck confluence with the Sauk River.
Six of One
Located at USGS River Mile 30.8.
Alligator Drop
Located at USGS River Mile 30.4.
Half Dozen of the Other
Boulder garden with small drops. Located at USGS River Mile 30.2.
Jaws
The main current heads towards the Demon Seed, a large rock right of center towards the bottom of the drop. You can skirt the right side of this but those who can manuver quickly can take a slightly smoother line to the left of it. Located at USGS River Mile 29.9.
Whirpool
At the pull-out at milepost 47 you can scout Whirpool which will give you an idea of the level of difficulty on this run. The Whirpool itself is largely gone. The former channel was all left side and there was not a river right option for decades--it was blocked off by a massive log jam but it did have some water bleeding through. The name Whirlpool came about because of the effect that drop had on the boats. After punching or inside skirting the stout hole at the sharp turn in the river, boats would exit the corner and run into the flow coming through the log jam and get hit with a 90 degree side current at the confluence of the two and get tube suckage and 'whirlpooled'. When the log jam broke loose in a flood it created the now main channel and the left side 'dried up' and hence no whirlpool exists anymore. Located at USGS River Mile 29.0.
Dragon's Back (Popeye)
Located at USGS River Mile 28.0.
The Game Show
'The Game Show' as in door #1, #2, #3. This drop has changed a lot over the years. It's all formed by a giant gravel bar that's now in the center of the river and the route is clearly left channel. Formerly for decades it was all a far right run. Then after flooding it opened the middle channel and the right was unrunnable. After a couple of years of running the center channel, right river had carved that channel on river left that we run today. Hence the name 'Game Show'. Located at USGS River Mile 25.9.
Clear Creek Access
This is a popular take-out point for kayakers where Clear Creek enters the Sauk. This can also be a put-in for a shorter class II float down to the Mill Bridge. Located at USGS River Mile 25.1.
Backman County Park Access
This access is in the neighborhood along Clear Creek Road. It is a the standard take-out most trips use as the rapids begin to taper off. From the river you need to start looking for the boat ramp on river left as the first couple cabins come into view. It is easy to miss if you are not paying attention. American Whitewater worked with the Forest Service and Snohomis County Parks to make signficant improvements to this access in 2014. Located at USGS River Mile 24.8.
Backman Drop
Boulder garden rapid with lots of options depending on flow. USGS River Mile 24.7.
Sauk Prairie Bridge Take Out
American Whitewater advocated for the improvement and formalization of this access with the reconstruction of the bridge. The launch access road extends under the bridge and is reached from the upstream river left side.
Trip Reports
Log in to add a reportBeautiful as always - Koby McInnis-Fuller
Jun 19, 2026
Ran this Friday, 6/19, and Sunday, 6/14, in our 14' raft with a stern-mount frame (I know, this is usually a commercial set up, but hey, it was what I learned on :D ). Flow was right around 4000 cfs both times. There was a lot of manuvering around big rocks and sleepers, while also making sure to stay strait through some decently large waves, especially jaws. Had a mix of first timers and experienced paddlers on the boat both times and everyone thoroughly enjoyed themselves. A few downed trees are in the river, but most are parallel to the current and easy to avoid. Some of them look like someone went in and hacked off limbs to make it safer. The far river left channel on whirlpool was almost completely non-existent, little more than a creek. Looks like the channel got blocked up during the floods last December.
Whirlpool Log Gone - Malia Vinyard
May 10, 2026
Whirlpool log is cleared out for good running! Whirlpool feels bigger since the floods with more holes throughout.
Whirlpool Log Update - Jeff Venturino
Apr 25, 2026
We had a pleasant day on the Sauk today! Good side of low. All 5 of our group were able to go right of the log in Whirlpool but it was very much in play with current and features driving toward it. Worth a scout any lower and also from the shuttle road. Perfect flow for a first time down and a gorgeous side hike up Clear Creek after!
Whitechuck to Backman - 4100 cfs - Thomas O'Keefe
Mar 8, 2026
We had a good group of different craft types: kayaks, packrafts, and a cataraft with the water slowly rising with rain comng down. We took a look at the wood at Whirpool on the drive up.
With flows over 4000 and rising two of us ran the right line at Whirpool and were able to get around the right side of the massive log that extends out from the left bank and partially blocks the right channel. Others scouted and elected to run the left side which had enough water to get down.
Whitechuck to Backman Park @3650 cfs - Sam Westover
Jan 23, 2026
7 of us put in at Whitechuck and paddled down to Backman County Park. 4 hardshell kayaks, 1 IK, and 1 R2. The water was unusually clear but very cold. The only notable wood hazard is the previously-reported log in Whirlpool. When you look at it from the road, it looks like there's room to get by it, but the current is pushing you straight into it, so it's much safer to take the left channel. The raft hung up once in that left channel at this flow, but it was easily un-stuck.
Wood Report (Whirlpool Rapid) - Sam Westover
Jan 1, 2026
As reported by Candice Larson:
Whirlpool rapid has a river-wide log midway down the rapid. The log is located on the river left side and pretty much blocks the whole channel.
This is new, and right next to the old log that’s been there for years. It’s stuck up against rock and not going anywhere anytime soon. It’s buried within the huge log pile.
We ran the left channel. At higher flows, possible to stay further right in main channel.
Log in the Jaws rapid - Kanako Iwata-Eng
Jun 17, 2025
There is a log near the end of the Jaws rapid, on the right side where most people run. Over 4000 cfs, we could go over, but barely. In the photo, as I knew it was there from the previous day's trip, could pass on the left. The day before, about 4200 cfs, I could float over it. It will be more dangerous at lower flows.
Fun Day on the Sauk - Thomas O'Keefe
Jun 15, 2023
Thomas O'Keefe and Cyn Taylor on a Sauk River Trip.
