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Project: Atascadero Creek Sedimentation Analysis and Fish Passage Restoration 65% Design Project

Description: Funding for this Project will be used to develop 65% design plans to address rapid sedimentation, which is critical to restoring salmon viability in the Atascadero Creek wateshed. This Project build upon the ongoing efforts to evaluate the cause of anoxia in the Atascadero Creek Ecological Reserve wetland and whether the removal of the flow blockage caused by the sediment aggradation will improve water quality when juvenile CCC Coho Salmon are present. This Project will also evaluate the likely ecosystem effects of changing the wetland hydroperiod in the lower Atascadero Creek watershed.

Reference Number: 3600BQ2096007

Implemented By: Gold Ridge Resource Conservation District

Objective: 1. Characterize historic hydrology and salmonid usage. 2. Monitor current CCC Coho Salmon usage and migration at the site. 3. Investigate issues of sediment removal, including durability, toxicity, and continued sedimentation from Green Valley Creek. 4. Investigate current and projected hydrology (sedimentation, fish habitat, wetland dynamics, and water quality). 5. Characterize current and projected water quality effects on potential for salmonid habitat. 6. Estimate current and projected carbon sequestration and greenhouse gas emissions. 7. Develop preliminary and 65% engineered designs for sediment removal in lower Atascadero. 8. Meet with Technical Working Group (TWG), stakeholders, and subcontractors to develop intermediate design plans (65%). Meet with public to present study findings and 65% design.

Type: Research/Planning (including Science)

Total Cost: $551,220.00

Project Status: Project Implementation

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

Estimated Completion: 3/15/2024    Actual Completion:

Associated Counties:

Project Benefits a Disadvantaged Community (or SDAC): No

Contribution SourcesContribution DateContribution Amount
Prop. 1, Watershed Restoration7/15/2020$551,220.00

Project MetricMetric TopicQuantityUnit
Research/Planning (including Science)Feasibility Studies -- Ecosystem Restoration  
Research/Planning (including Science)Mapping: Habitat  
Research/Planning (including Science)Modeling  

Water Action Plan Target

Protect and Restore Important EcosystemsAction Description


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