Channel Modification

Lewis River North Fork, RM 13.5

The project will create and enhance important spawning, rearing, and adult holding habitat for ESA-listed salmonids in the North Fork Lewis River. Connected side-channel habitat and LWD complexity have been reduced in this reach of the Lewis River due to past channel clean-outs, riparian clearing, hydro-regulation, and instream gravel mining. The project will enhance key habitat for ESA-listed salmonids through the construction of a 2,500 foot long side-channel with pool-riffle habitat, LWD placements, and connected off-channel (backwater) habitat.

Chinook River WDFW Conservation and Restoration

Washington Department of Fish and Wildlife began developing a restoration concept for this area in 1997. In 2001, the Columbia Land Trust acquired a large parcel of land, which was transferred to WDFW to become the Chinook unit of the St Johns Wildlife Area. Partial restoration including retrofit of internal tidegates was undertaken from 2005 - 2007. New restoration planning and implementation is being undertaken from 2011 - 2014, including an additional acquisition to the north (Mattson property).

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Rinearson Slough

This project completes a feasibility study to evaluate restoration options along the 5.8 mile Rinearson Slough where salmonid access has been restricted by dikes and impaired by elevated water temperatures, decreased flow, and invasive plant species.  The site is located along the south bank of the lower Columbia River at mile 63 behind a railroad embankment that functions as a dike cutting off the connection to the Columbia.  The floodplain is heavily impacted by residential and agricultural development.  Restoration alternatives being considered include installing a tide ga

Reach C Westport Slough - Karamanos

This project investigates restoration alternatives for creating off-channel habitat at a 90-acre site near the confluence of Westport Slough and the Columbia River at Columbia River mile 43.  The site has been significantly altered by past dredge fill andagricultural practices that have eliminated the majority of the native plant community and juvenile salmonid habitat.  Restoration approaches include restoring natural site topography, creating a tidal channel network, creating emergent tidal wetland, enhancing existing habitat, and restoring full-site native vegetation. 

Pierce Island Restoration

This project completes a feasibility study to evaluate different restoration actionson the 136-acre island.  The site is located at Columbia River Mile 142 adjacent to the Pierce National Wildlife Refuge.  The island, currently held in conservation, contains important rearing, refugia, and potential chum spawning habitats for Columbia Basin salmonids, and is inundated seasonally during the spring freshet.  The island’s native vegetation includes a Washington State listed endangered species which is threatened by invasive vegetation.

Multnomah & Wahkeena Creeks - Benson Lake

This project improves adult fish passage into the site, hydrologic and geomorphic processes, stream temperatures, water quality and habitat diversity.  Specific actions being considered include placing large wood, riparian planting, culvert improvements, and altering hydrology.  The 50-acre site is located within Benson State Park in the Columbia River Gorge at Columbia River mile 135.5.  The two creeks enter the site, merge and exit to the Columbia through a culvert under Interstate 84.  The site has been degraded by land use activities over the last several decades inc

Dairy Creek 1135 - Sturgeon Lake

This project aims to improve water circulation in Sturgeon Lake.  The improvements to water circulation in Sturgeon Lake will improve access to the lake for juvenile salmon and trout from the Columbia River, providing seasonal over-wintering and rearing habitat.  The project would also reduce the sedimentation occurring in the lake and may enhance water quality by flushing out nutrients and bacteria.

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