Difficulty II-III
Length 9.5 Miles
Gauge Payette; North Fork at Cascade (virtual)
Flow Range 700 - 3000 CFS
Flow Rate as of: 1 hour ago ~ 1090 [CFS]
Reach Info Last Updated 07/10/2020 7:23 pm

River Description

This run is a great day-trip that starts at the Cabarton Bridge and ends at Smith Ferry. During summer weekends when flows are optimal, the put-in is a hive of activity and things can get a bit chaotic as most groups try to launch from mid morning to noon. This is a great family-friendly trip with some fun whitewater and great places to stop for lunch. Several local outfitters run this stretch commercially.

The runs starts off as an easy float. Early in the trip the river narrows and flows through a fun rapid, Trestle Rapids, that starts off as class II and builds to class III as you pass under the railroad trestle.

Once you reach the bottom of Trestle Rapids, you will be in another calm stretch for a couple miles and the beaches along this section make popular lunch stops. The action begins to build again as you come to Wet Spot. The next three miles feature some great whitewater as the gradient increases.

As you pass under the Rainbow Bridge, you are in the final stretch with the fun flume ride down Francois and the finale at Howard's Plunge, a great class III+ drop that is a real thrill and ends in a calm recovery pool that extends for over a mile.

This run is a top of the reservoir release that starts late summer as the south fork flows drop off. The water is warm, and on a hot summer day the flat water float after Howard's Plunge is a great place to jump out of the boat and float alongside the boats.


The put-in is at the Cabarton Bridge just downstream of Cascade Reservoir (8 miles south of the town of Cascade). At Highway 55 mile 106.9 turn west on Cabarton Road and follow it 1.7 miles to the bridge. The access is on the downstream river left side of the bridge and parking is limited so groups generally try to get most of their vehicles down at the take-out. A ramp for launching rafts is available but it can get congested on weekends with trailers backing into the launch area and outfitter buses unloading their guests. Be prepared to move efficiently when you arrive (this is definitely not the place to rig your boat on the ramp or sit there fine tuning adjustments on your oar locks). If you have a raft get it down the ramp and tied off out of the way and if you are kayaking don't leave your boats scattered across the unloading zone. Move your rig out of the way as soon as you can. The site has a $5 launch fee.

The takeout is behind the Cougar Mountain Lodge at Smith's Ferry. At Highway 55 mile 97.4 turn east on Smiths Ferry Drive and head 0.1 mile to the field on the downstream river right side of the bridge where ample parking is available for a $5 fee.
Boise & Payette River Basin Teacups

Rapid Descriptions


Class - III Mile - -26

The first and longest rapid on the run.


Class - III Mile - -22.7

Randy's Rock

Class - II+ Mile - -21.7


Class - II+ Mile - -20.8


Class - III Mile - -20.2

Howard's Plunge

Class - III+ Mile - -19.8

The big drop and the finale to the run. You can scout the drop before the run at Highway 55 mile 98.4.


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8 years ago

Great river for the whitewater intermediate. Action gets more progressive near the end of the run. Run is mostly has pool drop rapids with Trestle Rapid being the exception. The last 3 rapids are a hoot!! The run ends into a small lake. Water is generally warmer than most and exceptionally warm in late summer because the river is fed from top waters from the dam at Cascade.You have to poop in a container so you dont ruin camp sites.And not get stuck in the room of doom after howards plunge. Other comments: at least a 1-2 long flat stretch in the middle of the run. Very scenic run. A lot of bald eagles abound.

Gage Descriptions

This link states: 
The operation of this gaging station has been assumed by the Idaho Power Company



Above 2900 cfs this run may be somewhat more difficult. Any additional information on high and low levels would be very welcome; please log a comment. 

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  
2012-07-13 n/a Fatality Other Read More



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Idaho Proposes Registration Fee for Non-Motorized Boats

John Gangemi

<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />Idaho is proposing a $13 registration fee for non-motorized boats greater than 7 feet in length. Under this registration fee proposal all kayaks and rafts on Idaho waters would be required to have a registration sticker fixed to the bow of each boat greater than 7 feet in length. Stickers would not be transferable between boats. Out of state boaters would be required to comply as well.

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Can You Taste Victory?

American Whitewater

FERC revokes Preliminary Permit for
hydropower project on Boundary Creek in
Northern Idaho.

Bill Hunt


Thomas O'Keefe


Rick Widmer


Revision #Revision DateAuthorComment
1209958 06/28/18 Bill Hunt added teacups
1206694 07/07/16 Thomas O'Keefe rapids mapped
1190385 12/14/04 Rick Widmer n/a
1201218 04/24/12 Bill Hunt added Idaho Power gauge, updated lat/long.
1204240 03/02/15 Thomas O'Keefe rapids mapped
1213448 08/03/19 Bill Hunt updated image position
1215517 07/10/20 Bill Hunt updated image position
1206706 07/09/16 Thomas O'Keefe rapid edits
1209571 05/14/18 Thomas O'Keefe minor edit
1212737 06/06/19 Bill Hunt updated image position