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Project: Elk River Estuary and Tidal Wetlands Enhancement Project

Description: Project would: 1) remove 2 tide gates, increasing tidal influence; 2) increase width and depth of existing channels to maximize eelgrass habitat; 3) spread excavated material onto area and grade to marsh plain elevation, and create new tidal channels, freshwater marsh, wetland pond habitat, and bird habitat islands; 4) create 4 acres of riparian habitat; and 5) eradicate invasive Spartina. In Area 2: 1) breach dike to restore tidal influence; 2) excavate new Elk River tributary channel and intertidal channel network, fill existing ditches; 3) spread excavated material onto area and grade to marsh plain elevation; create wetland pond habitat, bird habitat islands; and construct tidal ridges on the eastern edge of the project area alongside Highway 101, and on the western edge of the railroad right of way; 4) create nine acres of riparian habitat; 5) remove invasive Spartina; and 6) remove an existing road to expand the tidal wetland area.

Reference Number: 0540P01206

Implemented By: City of Eureka

Objective: This project will restore and enhance approximately 80 acres of salt marsh habitat, 13 acres of open water, and 13 acres of upland riparian habitat in the lower estuary of the Elk River. This involves a net increase of approximately 58 acres of salt marsh, 12 acres of open water, and 13 acres of riparian habitat). Post-construction monitoring will include invasive Spartina, eelgrass, and biological and physical surveys. OPC funding would support two years of monitoring. More funding will be pursued by the grantee to continue monitoring for an additional five to ten years. Sea-level rise monitoring (by multiple entities), monitoring of sediment accretion (pending grant proposals), and vegetation monitoring will provide information about marsh transgression and resiliency to sea-level rise.

Type: Restoration, Infrastructure Improvement

Total Cost: $1,038,853.00

Project Status: Project Implementation

On Time?: Yes    Within Scope?: Yes    Within Budget?: Yes

Estimated Completion: 6/30/2022    Actual Completion:

Associated Counties: Humboldt

Project Benefits a Disadvantaged Community (or SDAC): Yes

Contribution SourcesContribution DateContribution Amount
Prop. 1, Ecosystem, Watershed Protection and Restoration1/9/2019$1,038,853.00

Project MetricMetric TopicQuantityUnit
Infrastructure Improvement   

Water Action Plan Target

Protect and Restore Important EcosystemsAction Description


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