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Projects - environment, ecology and conservation

Environmental projects that restore fish and wildlife habitat, improve water quality, reduce flood risk and manage stormwater.
Healthy wetland side channel along the Green River
King County works on environmental projects along rivers and on degraded land to restore clean water and healthy habitat. This work increases biodiversity while reducing risk of extinction for threatened and endangered species such as Chinook salmon and steelhead, helping them regenerate and thrive again.

Habitat restoration projects

Chemicals of emerging concern in salmon streams

Overview of a project to identify and measure chemicals of emerging concern (CECs) in salmon streams with critical spawning and rearing habitat.

Fall City Floodplain Restoration Project

Snoqualmie River project to open up off-channel habitat for endangered salmon and trout species and restore natural processes while improving protection from floods and erosion.

Lower Miller River Floodplain Restoration Project

Restoration actions in the lower mile of the Miller River near Skykomish, WA to improve habitat for threatened salmon species and reduce flood risks.

NE Auburn Creek Restoration Project

Salmon restoration project planned to increase rearing and refuge habitat in the Lower Green River to allow juvenile fish to stay in fresh water longer to improve their survival rate.

Lower Frew Levee Setback Project (Tolt River)

Project in the City of Carnation will reduce flood risks and improve habitat along the lower Tolt River.

Molasses Creek Fish Barrier and Habitat Improvement Study

Cedar River tributary project potentially to daylight a quarter mile section of pipe that connects a forested ravine with wetlands that provide good fish habitat.

Chinook Wind Mitigation Project

Estuary wetland project along the Duwamish River in the City of Tukwila provides off-channel aquatic and intertidal mud flat habitat, marsh and riparian habitat.

Stream bug seeding project

A novel strategy to re-establish aquatic insect communities in King County streams.

Green stormwater infrastructure effectiveness monitoring

Study of water quality results from green stormwater infrastructure.

Estimating toxics loadings to the Lake Washington Watershed

Project to develop numeric tools to understand how to reduce contaminant concentrations in Lake Washington fish.

The Restore and Protect Project

How King County has advanced efforts to restore and protect streams across Puget Sound.

Oyster Shell Catch Basin Retrofit, Mercer Island

Test results of a novel stormwater treatment method using oyster shells.

Programs

Fish Passage Restoration Program

Clearing the way for migrating fish species to return home and regenerate the runs of the past.

Stormwater Capital Services

Projects that manage stormwater while protecting and improving water quality and aquatic habitat.

River and Floodplain Management

Investments in flood protection that also improve habitat in river systems.

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