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Project: Elkhorn Slough Tidal Marsh Restoration, Augmentation

Description: An augmentation to an existing grant to the Elkhorn Slough Foundation for a cooperative project with California Department of Fish and Wildlife (CDFW), California State Coastal Conservancy, California Department of Water Resources, US Fish and Wildlife Service, and Santa Cruz County Public Works, to restore 46 acres of tidal marsh and five acres of perennial grasses, on CDFW’s Elkhorn Slough National Marine Estuarine Research Reserve, located two miles east of Moss Landing in Monterey County. The project will restore 46 acres of tidal marshes in the Minhoto and Hester’s Marsh areas of Elkhorn Slough. Project methods involve adding sediment to the subsided land surface in order to bring the land up to the correct elevation for natural tidal marsh processes to occur. Sediment must be added from outside sources, as ambient suspended sediment in Elkhorn Slough is too low for natural processes alone to restore the lost elevation. Santa Cruz Public Works Department contributed over 50,000 cubic yards of sediment to this project. An additional 90,000 cubic yards of sediment will be needed to complete the restoration; that sediment will be obtained through excavation of the adjacent upland. Once the former marshes are brought up to the correct elevation, marsh plants will naturally recolonize the wetland, producing biomass and trapping sediments, allowing the assemblage to build elevation and keep pace with future sea level rise. Adding sediment to the subsided former marshes will not only restore tidal marsh directly but will increase the resilience of other tidal marshes in the estuary.

Reference Number: 36402017121

Implemented By: California Department of Fish and Wildlife

Objective: To restore 46 acres of tidal marsh and five acres of perennial grasses

Type: Restoration

Total Cost: $400,000.00

Project Status: Project Implementation

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

Estimated Completion: 12/31/2020    Actual Completion:

Associated Counties: Monterey

Located In Disadvantaged Community: No

Contribution SourcesContribution DateContribution Amount
  $400,000.00
Prop. 84, Statewide Habitat Program11/30/2017$200,000.00
Prop. 40, Wildlife Conservation Board: Land and Water Conservation11/30/2017$200,000.00


Project MetricMetric TopicQuantityUnit
RestorationEcosystem: Coastal Habitat46acres restored/assessed/managed

Location

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