Large Woody Debris (LWD)

Colleen McGee

Chinook Bend-Tolt Large Wood Debris (LWD) Assessment

Wild Fish Conservancy worked with an environmental engineering firm to assess the feasibility of large wood (LWD) supplementation in the Snoqualmie River from its confluence with the Tolt River, downstream to Harris Creek near Chinook Bend Natural Area (River Mile 21-25). The assessment laid the foundation for conceptual designs that will detail instream LWD treatments in the Chinook Bend -Tolt reach of the Snoqualmie River. Public outreach was conducted to assess recreational boater usage in a 4-mile reach of the Snoqualmie River that is critical salmon habitat. The information gained from the public outreach was used to inform the design of conceptual Large Woody Debris (LWD) habitat restoration treatments in the reach.

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Colleen McGee

Deschutes Tributary Restoration Design

This project identifed, prioritized, and provided preliminary designs to restore a unique Deschutes River spring fed wetland and stream
complex. Restoration actions identified include removing three failing culverts, livestock
exclusion fencing to protect streams and wetlands, instream LWD placement, and riparian restoration, along with a suite of farm management BMPs.

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Colleen McGee

Beckler River Engineered Log Jams (ELJs) Restoration

WFC engineers and ecologists developed restoration treatment designs including Engineered Log Jams (ELJs) to capture and retain sediment in the mainstem of the Beckler river channel, which when implemented, will improve aquatic habitat diversity and reconnect the channel to its historic floodplain.

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Colleen McGee

Tracy Creek Family Forest Fish Passage Project

Project partner Natural Resources Conservation Service (NRCS) designed and constructed fish passage improvements at the culverts at both crossings, removing the undersized culverts and replacing them with steel bridges. WFC designed and implemented a bank stabilization project using extensive coir wrapping, large woody debris (LWD) placement, and native riparian planting.

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Colleen McGee

Weiss Creek Family Forest Fish Passage Project

WFC staff replaced an undersized partial-barrier culvert with a 35′ long by 16′ wide modular steel bridge. Minor in-channel work was performed to provide a consistent gradient through the project reach, and LWD was added to increase instream habitat complexity. Disturbed areas were replanted with native trees and shrubs.

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