Difficulty III
Length Miles
Flow Range 1800 - 20000 CFS
Flow Rate as of: 40 minutes ago 9030 [CFS]
Reach Info Last Updated 03/20/2019 5:05 pm

River Description

Alpine Canyon on the Snake River is one of the classic whitewater runs in the West and the most popular of the runs on the Snake River. No matter what the flows are, you can always find something to enjoy on this run which features some great playboating. In the spring high flows (10,000-12,000 cfs) can produce class IV rapids and some epic bigwater features. Through the summer the river provides consistent class III whitewater that is enjoyed by thousands of visitors who take part in commercial raft trips on this Wild and Scenic River. See individual rapid descriptions below.

River Conservation

American Whitewater was part of a coalition of groups supporting the designation of the Snake River as a Wild and Scenic River which was signed into law in 2009 (Public Law 111-11). This action proteced 412.2 miles of the Snake River and the major tributaries that make up the Snake Headwaters. The majority of the river miles, including Alpine Canyon are managed by Bridger-Teton National Forest, with the rest administered by the National Park Service and Fish and Wildlife Service. The National Forest works to protect and enhance the values that led to the inclusion of this section of the Snake River as Wild and Scenic including scenery, recreation, ecology and wildlife, fish, and geology.

Keeping aquatic invasive species (AIS) out of the Snake River is a big concern. Clean, drain, and dry all boating gear (including fishing boots and watercraft that are exempt from needing a sticker) used in other drainages, before putting in on the Snake. An annual sticker should be purchased for hardshell kayaks, rafts and inflatables over 10 feet long. These are available at the market in Alpine. More info is here (2016 links): 



Rapid Descriptions

West Table put-in

Class - N/A Mile - 0

With changing rooms, pit toilets, and recycling for aluminum, plastic, and glass, this is the primary put-in for Alpine Canyon. Do not expect cell phone service in this canyon.

Station Creek

Class - II+ Mile - 0.7
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The first substantial play on the run, with a diagonal wave running left to right, and another surf spot on the left. At 6000-7000 cfs eddy service is available on the left. 

surf wave

Class - N/A Mile - 0.9
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A nice little wave on the left at medium flows with eddy service. 


Class - N/A Mile - 1.5
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The May 2011 landslide below Taco hole raised the river level, so that Taco is no more. A parking area and staircase down to the river provide access at this point.

Double D

Class - III Mile - 1.8
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This rapid significantly changed following the 2011 landslide. At higher flows look for a glassy surf wave at the top of this rapid. You can catch a fun eddy on the left.


Haircut Rock

Class - III Mile - 2.2
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The rangers at the putin often have a sign posted warning of many raft flips at Haircut Rock. The river makes a sharp right turn at this rock, and rafters need to make the move right. Kayakers might enjoy catching the swirly left eddy next to the rock.

Dream Seam

Class - N/A Mile - 2.3
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This is a famous eddy line for squirt boaters seeking downtime. Kayakers will enjoy the peelout. Large eddies on both sides allow for regrouping after the first major rapids of the run, even for large groups.

Three Oar Deal

Class - V Mile - 2.7
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This hole does not exist most of the summer; its just a rock sticking out of the water, with a ledge coming in from river left. But in the spring when the water is high; above 12,000 cfs, this is the worst hole on the river (class V), and care MUST be taken to stay river right, where you have loads of room to avoid the hole.

Gauging Straits

Class - N/A Mile - 3.8
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Crack open a beverage of your choice, and jump off the raft or have a water fight, as you float this section of scenic flats. See if you can spot the USGS gauge that records the water level for this section. If you don't mind hiking down the hill, it is possible to put in in this area, but the new Kahuna trail is probably a better option. 

Blind Canyon rapid

Class - II+ Mile - 4.8
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This rapid will wake you up after the flatwater section--time to get ready for the big rapids up ahead! Large eddies are available on the left after this rapid, if you want to regroup and take a break before Kahuna.

new Kahuna putin trail (2013)

Class - N/A Mile - 5
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In the spring of 2013, a new trail was put in that lets kayakers put in right above Kahuna! Park at the same Kahuna/Lunch Counter parking area, and look for the new trail just upstream of the old trail.

Big Kahuna

Class - III+ Mile - 5.1

The biggest hit on the Snake :-). Rafts love to square up and hit this one, and see if everyone stays in the boat. Duckies are almost guaranteed to flip if they hit this directly, but you have plenty of room on the left (more challenging) and right. Like most of this run, it is a relatively safe swim too. If kayakers paddle really hard, they may catch the glassy wave that is right before the big hit wave. Better surfing is available below 6000 cfs. Swimmers can usually make the huge eddy on river left; you can also hike laps from the left eddy.

Lunch Counter

Class - III Mile - 5.2

The biggest waves on the river at higher flows, and the site of the famous glassy wave that surfers love. Flows of 9000-13,000 cfs are optimal levels for surfing Lunch Counter, but 6500 cfs is still a good surfing level. A center wave is available at medium flows. The riverside right rocks are one of the best places to hang out and watch the fun. A nice trail down from the parking area provides access to the rocks and offers a great vantage point for spectactors; bring a picnic and your camera.

Hawaii 5-O

Class - N/A Mile - 5.6
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This curler wave is at the start of the next rapid; if you paddle hard you may catch it center and drift left.


Class - III Mile - 5.7
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Along with Lunch Counter and Kahuna, this is one of the biggest rapids on the river. Hang on for the ride!


Class - III Mile - 6.3
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This rapid is known for strong swirlies right behind it (paddle hard!), and the air bubbles that the rapid entrains deep into the river, which shimmer upwards after the rapid. Do a roll, or jump in the river here, and listen...

Cliff jump

Class - N/A Mile - 6.5
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A scramble up to a cliff jump on river left can break up the next section of flatwater, if you are ambitious. At most summer flows, a throw rope is helpful to get jumpers back in to the bank.


Class - III Mile - 6.8
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The last major rapid before Sheep Gulch starts with some small but nice surf waves, followed by lots of pourovers and rocks to play around (with a number of shallow ledges), and a big wave train out the bottom. The left line, left of the large rocks at the start, is generally cleaner for rafts. A huge river left eddy at the bottom allows for another run down the large wave train at the bottom.

windowshade wave

Class - N/A Mile - 7.2
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Below Cottonwood on the right, a wide ledge hole is surprisingly trashy. If you drop in looking for a surf, you might get a windowshading :-). A secondary wave behind it is more surfable, and can also be sticky at medium flows (6000-7000 cfs). Eddy service is available on the right. 

last surf wave

Class - N/A Mile - 7.3
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The last surf wave, with eddy service on river right.

Sheep Gulch

Class - N/A Mile - 7.4

With another great run in your memory banks, its time to negotiate the takeout ramp. You can put your recyclables in the handy container on the downstream side. If you need to walk up to get your vehicle, a nicely-built trail runs from downstream side of the take-out ramp up to the parking area. 


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8 years ago

Gage Descriptions

Above 12,000 cfs the river moves up to class IV particularly Lunch Counter; and 3 Oar Deal becomes a dangerous class V hole, avoidable on the right. The river has been run up to 38,000.

Directions Description

We have no additional detail on this route. Use the map below to calculate how to arrive to the main town from your zipcode.

Date Flow Result Factor  
2017-07-31 n/a Fatality One Boat Trip Read More
2017-07-08 High Fatality One Boat Trip Read More
2016-08-18 n/a Fatality Cold Water Read More
2016-07-22 Low Fatality Other Read More
2014-09-04 n/a Injury Cold Water Read More
2011-07-07 n/a Fatality High Water Read More
2010-07-30 n/a Near Miss/Rescue Other Read More
2010-07-24 Low Fatality Read More
2009-07-01 High Fatality Other Read More



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Save The Date: Wild West River Fest (WY)

Kestrel Kunz

Cody, Wyoming - This August 19 & 20 the Wild West Paddle Club is hosting the 2017 Wild West River Fest in Cody, Wyoming. In celebration of the beautiful Shoshone River, the Fest has events for everyone - Slalom Race, Class II Sprint, Shoshone Canyon Boater Cross, and many other fun activities for the whole family! Weekend festivities are free to the public, with the exception of race registration fees for competitors. You can find a full schedule here and all competitors need to register online in advance.  

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Protection for Snake River Headwaters Proposed

Kevin Colburn

Senator Craig Thomas (R-WY) introduced legislation to protect the streams of the Snake River headwaters in Wyoming as Wild and Scenic Rivers on May 9th, 2007. The introduction of the "Snake Headwaters Legacy Act" is a major milestone in the protection of rivers located in Grand Teton National Park, Yellowstone National Park and the surrounding National Forests.

Bill Hunt


Thomas O'Keefe


Matt Muir


Revision #Revision DateAuthorComment
1202453 07/30/13 Bill Hunt
1208817 01/29/18 Thomas O'Keefe minor edits
1202562 08/08/13 Bill Hunt added 3 oar deal to the map.
1192266 08/18/08 n/a n/a
1202454 07/30/13 Bill Hunt
1196129 09/24/09 Thomas O'Keefe
1206743 07/26/16 Bill Hunt updated the wyo.gov invasive species links for 2016.
1206761 08/16/16 Bill Hunt rapid photo eduts
1211478 03/20/19 Thomas O'Keefe updated image position
1208818 01/29/18 Thomas O'Keefe minor grammer edits