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Project: Llano Seco/ M&T Ranch Cone Fish Screen Project

Description: This Project will replace the existing cylindrical fish screens on the Llano Seco/M&T Ranch Diversion with new cone fish screens. Sediment deposition from an encroaching gravel bar is posing a threat to the continued operation of the Diversion. Since 50% of the fish screen surfaces are currently covered with sediment deposition, the fish screens are no longer receiving sufficient sweeping flows (parallel to screen), inconsistent with National Marine Fisheries Service (NMFS) and CDFW fish screen criteria. Consequently, the fish screens are no longer providing adequate levels of juvenile anadromous fish protection in the Sacramento River, and pumping capacities are impaired during low river flows.

Reference Number: 3600BQ2096003

Implemented By: Family Water Alliance

Objective: This Project will replace the existing cylindrical fish screens (150 cubic feet/second) on the Llano Seco/M&T Ranch diversion on the Sacramento River with new cone fish screens that will 1) provide for the protection and restoration of anadromous fish species habitat to aid in the recovery and conservation of anadromous salmonids, 2) provide for water supply reliability from the Sacramento River to the Llano Seco Ranch, M&T Ranch, and refuges for the protection of waterfowl, wildlife and agricultural benefits, 3) preserve instream flows on Butte Creek for fisheries and wildlife purposes, and 4) remove entrainment potential (reverse flows) into Big Chico Creek from the Sacramento River.

Type: Restoration, Infrastructure Improvement

Total Cost: $895,701.00

Project Status: Project Implementation

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

Estimated Completion: 7/1/2022    Actual Completion:

Associated Counties:

Project Benefits a Disadvantaged Community (or SDAC): Yes

Contribution SourcesContribution DateContribution Amount
Prop. 1, Watershed Restoration7/1/2020$895,701.00

Project MetricMetric TopicQuantityUnit
Infrastructure ImprovementFish Passage/Screens  

Water Action Plan Target

Protect and Restore Important EcosystemsAction Description


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