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Delameter Barrier Removal and Improvement 

About 

In September of 2023, LCFEG removed a 13-foot-wide steel culvert servicing a private road over an unnamed tributary of Delameter Creek. The culvert was a WDFW-listed fish barrier that was collapsing and installed upside down. The culvert prevented ESA-listed anadromous fish (Chinook, Chum, Coho, and Steelhead) and other aquatic species from accessing approximately 1 mile of spring-fed cold-water habitat. After removing the culvert, LCFEG installed a 34' steel bridge and 30 pieces of instream Large Woody Debris (LWD) to aid fish passage during low flows and help retain spawning gravels. LCFEG also revegetated the area with 6,500 live stakes (willow and dogwood) and 50 western red cedars (4-5').

These improvements will be particularly beneficial to ESA-listed Chum, fall Chinook, and Coho. Removing the barrier and reconnecting the stream bed will restore normal habitat-forming processes to reestablish habitat complexity, off-channel habitats, and conditions favorable to fish spawning and rearing. Placing wood debris in the stream will help slow water flow, allowing large sediment like gravel to fall to the streambed instead of continuing downstream. Woody debris can also help decrease water temperature by providing shaded areas along streams and creating pockets of cooler water for all age groups of salmonids. Partially restoring normal floodplain functions will also help control catastrophic flooding and provide wetland and riparian habitats critical to other fish, wildlife, and plant species. Project Goals 1. Replace the existing structure following WDFW stream simulation guidelines and construct to accommodate a 100-year flood event. 2. Restore a mile of fish access, and rebuild the stream bed.

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Photo: Original Delameter culvert (imassable fish barrier)

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Photo:  Bridge construction, summer 2023

Target Species 

Metrics

Partners | Consultants
Contractors

Funds

Chum

Chinook

coho

1 barrier improved/replaced, Restored access to 1 mile of floodplain habitat. 6,500 native plants installed

WDFW

WA State RCO 

Brian Abbot Fish Barrier Removal Board

Project #20-1682 ($208,321.93)

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