DESCRIPTION
The project will occur in the lower Twisp River and the
Middle Methow Assessment Units. The lower Twisp River is affected by the volume
of irrigation water diverted, limiting available spawning and rearing habitat
for ESA-listed fish species. Acquisition of water in the lower Twisp for
instream benefit is a Tier 1 strategic action (as are water temperature, levee
removals, and reduction of fish injury and mortality) in the 2013 Biological
Strategy. A portion of the MVID project will occur in the Middle Methow River,
where side channel and wetland connections are listed as the number 1
ecological concern in the 2013 Biological Strategy. Currently, Alder Creek
empties into the MVID West irrigation ditch, depriving flow to its alluvial fan
and associated wetlands at the Alder Creek confluence with the Methow
River. In addition, the current condition of the MVID East Canal
contributes to decreased water quantity in the Middle Methow. Currently,
operation and maintenance of the MVID's Twisp River point of diversion involves
push-up dam construction during low flows, which results in injury or mortality
of listed fish species and alteration of instream habitat. In addition, redds
and juveniles can become stranded in the MVID West Canal's intake and fish
return channel. The project will eliminate the MVID irrigation diversion and
address these impacts, and return a minimum of 11 cfs (and up to 15 cfs, the
present diversion rate) and permanently trust the saved wa
As part of the completed MVID project Trout unlimited was able to implement and fully complete a large scale irrigation infrastructure project for salmon recovery. The project improved instream flow, by over 11 cfs in the Twisp River and 2 cfs in Alder Creek. Additional instream flow benefits are likely derived from the project, but were not captured as part of the official water right changes. The successful completion of this project also allowed for other restoration activities and habitat improvements in the Twisp River. This effort was huge accomplishment and demonstrates the tenacity of TU and our partners. TU and Vanhess Environmental worked cooperatively throughout to lead this project to its post project phase and worked through thousands of issues to see completion.
Please see the comprehensive narrative report in the attachments for further detail.