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MAJOR BASIN:
Minor Basin:

Alta Harris Side Channel Connection

Location:

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A “before” view of the project site, from riprap berm looking SW towards Boise River. Existing side channel ends at the end of the berm, and new side channel segment will connect and flow around the end of the berm.

A “before” view of the project site, where the existing side channel interacts with a shallow pool and standing water is present year round.

Barber Dam is located on the Boise River, and acts as a barrier to migrating fish. In 2005, construction of a side channel was initiated to provide fish passage around Barber Dam and provide off-channel habitat. The side channel was connected to the Boise River downstream of Barber Dam but work to connect the side channel to the Boise River upstream of the dam was not completed. The channel’s potential connection to the Boise River is currently obstructed by the Barber Dam. Flow in the partially completed side channel is minimal and is due to springs and irrigation system overflow.

In partnership with Trout Unlimited, this project will complete the side channel connection with the main stem of the Boise River, to bypass Barber Dam. It improve habitat for native salmonids, and improve water quality and riparian conditions within the Boise River corridor.

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