DESCRIPTION
The project is the final phase (construction) following two
prior RCO grants including purchase of a conservation easement for the new channel
alignment and final design as per #19 of the Naches Action Plan. Relocate and reconstruct
the lower portion of Cowiche Creek and its missing floodplain back towards its
former alignment, for the 1400 foot reach located between Highway 12 bridge and
the Fruitvale Irrigation Diversion Channel. This reach is just above its
confluence with the Naches River and located within the Naches River floodplain. The new Cowiche floodplain will accommodate
the 100-year flow. New low-flow channel will be capable of conveying the 2-year
recurrence interval flow, will enhance habitat and access for native fish
populations. Project consists of 4 specific goals:
1.
Realign the lower reach to exhibit geomorphic
characteristics and processes similar to what would have existed prior to
channelization/realignment and levee confinement.
2.
Provide riparian habitat and access throughout
the project reach for a creek with multiple prior Yakima basin efforts totaling
millions of dollars on the creek to enhance salmon and ESA species access and
habitat.
3.
Provide habitat for juvenile rearing and/or
spawning of steelhead, chinook, coho and lamprey.
4.
Replace the existing farm access bridge that
confines habitat enhancement
5.
Following this project and the coincident
retirement of Fruitvale Irrigatio
The project is the final phase (construction) following two prior RCO grants including purchase of a conservation easement for the new channel alignment and final design as per #19 of the Naches Action Plan. Relocate and reconstruct the lower portion of Cowiche Creek and its missing floodplain back towards its former alignment, for the 1400 foot reach located between Highway 12 bridge and the Fruitvale Irrigation Diversion Channel. This reach is just above its confluence with the Naches River and located within the Naches River floodplain. The new Cowiche floodplain will accommodate the 100-year flow. New low-flow channel will be capable of conveying the 2-year recurrence interval flow, will enhance habitat and access for native fish populations. Project consists of 4 specific goals: 1. Realign the lower reach to exhibit geomorphic characteristics and processes similar to what would have existed prior to channelization/realignment and levee confinement. 2. Provide riparian habitat and access throughout the project reach for a creek with multiple prior Yakima basin efforts totaling millions of dollars on the creek to enhance salmon and ESA species access and habitat. 3. Provide habitat for juvenile rearing and/or spawning of steelhead, chinook, coho and lamprey. 4. Replace the existing farm access bridge that confines habitat enhancement 5. Following this project and the coincident retirement of Fruitvale Irrigatio