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Cutthroat Trout Migration Barrier and Maintenance - Southern Region FY22
Region: Southern
ID: 5689
Project Status: Completed
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Fiscal Year Completed
2022
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Final Methods
The DWR purchased concrete blocks and had them delivered to the UM Creek barrier site. The DWR Heavy Equipment crew and DWR regional personnel used their excavator to prepare and shape the stream channel, stack the blocks to build the barrier, install a rubber pond liner above the blocks, and placed fill material in the stream bed above the barrier. Some local rock was used around the barrier as well. The Southern Region's Bobcat loader was also used in construction work to move the blocks and dirt. A few water birch trees and woody debris was removed below the barrier. For the Manning Creek barrier, the DWR excavator and crew was used to collect large rock from around the barrier site and stack the rock on the existing barrier to build vertical side walls and a strengthen the barrier wall. Berms to direct high stream flows over the barrier were also constructed. Southern Regional DWR personnel will install concrete splash pads on Manning Creek barrier and make repairs to concrete pads on the North Creek barriers in fall 2022.
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Project Narrative
The UM Creek barrier work went well and the barrier is complete and functioning well. It will prevent non-native fishes (especially rainbow trout) in Mill Meadow Reservoir moving up stream into Forsyth Reservoir and help protect a Conservation population of Colorado River cutthroat trout in UM Creek above the reservoir. The pool formed above the barrier should fill in with sediment within a year. The fish barrier on Manning Creek was not in good condition and recently brown trout have been found above the barrier. The barrier is now rebuilt and is much stronger and solid, with vertical side walls and berms that will keep high stream flows going over the barrier instead of around the sides. As of 5/20/2022 the concrete splash pad has not been installed. UDWR regional personnel will install it sometime in the fall.
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Future Management
Periodic inspections to be sure the barriers are in good condition and functioning properly.
Submitted By
Nic Braithwaite
Submitted Time
08/31/2022 07:39:29
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