Difficulty IV+
Length 5 Miles
Gauge N/A
Flow Range
Reach Info Last Updated 07/18/2020 3:12 am

River Description

Currently the reach from Pioneer Park to JC Boyle Dam is inundated beneath the waters of a reservoir. From JC Boyle Dam to the Powerhouse the river is regularly dewatered with flows bypassed through a canal and penstock as part of the hydropower project. You'll be lucky to catch this run with water in it as it only happens when the reservoir is spilling. When that occurs, this run makes a great five mile run with more challenging whitewater and dramatic scenery than the Hell's Corner downstream. When it has water, this rarely-boated upper section makes a great extension to the Hell's Corner run.

There are nine distinct Class IV rapids in this section, some of which are as much as a half mile in length. At the higher flows of 1300 and 1600 cfs you can enjoy numerous play features to catch on the fly as well as several play spots with eddy service. The long rapids with steep horizon lines provide plenty of entertainment for river runners. Overall, this reach has a creek-like appearance in a basalt canyon with ponderosa pines.

American Whitewater worked with PacifiCorp, local boaters, and outfitters to coordinate a flow release study on this reach during summer 2002 and again in 2020. Hopefully we'll see the day when the river once again provides boating opportunities and improved conditions for the native fishery.

Rapid Descriptions

Sidecast Slide

Class - N/A Mile - 0
Rapid Thumbnail Missing


No Gage

Gage Descriptions

Visual, when spilling. Look for flows of 1000 to 3000 cfs. Flows around 1500 cfs are optimal. Flow can be determined by the difference between Copco Reservoir Inflow and JC Boyle Powerhouse release (800-547-1501).

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.

No Accident Reports



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Interior Recommends Removing Klamath River Dams

Megan Hooker

On Thursday, April 4th, the Department of Interior recommended removing four dams on the Klamath River, listing the action as the Preferred Alternative for a long-term solution to address native fishery and water resource issues in the Klamath Basin. The recommendation was set forth in the Department's Final Environmental Impact Statement (EIS), which provides a comprehensive review of whether partially or fulling removing four dams owned and operated by PacifCorp will help to restore salmon runs to the Klamath River.

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Klamath River Restoration Public Comment Period Open (OR/CA)

Thomas O'Keefe

A public comment period is now open for the restoration of the Klamath River through November 21st. Secretary of the Interior Ken Salazar announced in late September that the federal government has completed numerous peer-reviewed scientific and technical studies providing new and detailed information about the environmental and economic impacts of removing four Klamath River hydroelectric dams.

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AW Weighs in on Klamath River (OR/CA)

Thomas O'Keefe

AW provides comment on the four lower dams on the Klamath River that continue to have a devastating impact on salmon populations. We have formally requested a full environmental review of removing all four dams on the Klamath River so all stakeholders can make an informed decision regarding the fate of the Klamath River.

Thomas O'Keefe


Matt Muir


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1214832 05/02/20 Thomas O'Keefe updated description
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1215559 07/17/20 Thomas O'Keefe updated description
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1210452 10/26/18 Thomas O'Keefe title edit