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CALIFORNIA NATURAL RESOURCES AGENCY | RESOURCES.CA.GOV/ECORESTORE
The Yolo Bypass, a prominent feature of California’s State Plan of Flood Control, is a known adult fish anadromous migration corridor. Currently, structures within the Yolo Bypass are a documented source of migratory delay to, and loss of, special status species, including adult Chinook salmon, steelhead, and green sturgeon. Specifically, potential barriers exist for the migratory fish in the form of earthen agricultural road crossings through the Tule Canal in the northern and mid-Yolo Bypass. The current fish ladder at the Fremont Weir provides insufficient passage for adult salmon and does not provide passage for adult sturgeon. Improved fish passage at Yolo Bypass barriers (e.g. Fremont Weir) is necessary to enable open channel upstream migration to the Sacramento River, allowing migrating fish to ultimately reach their spawning areas.
The proposed Fremont Weir Adult Fish Passage Modification Project would widen and deepen the existing fish ladder at the Fremont Weir. The maximum target flow through the fish passage structure would be limited to approximately 1,100 cubic feet per second. The upstream and downstream adjoining channels would be reconfigured to accommodate migratory fish passage. An existing earthen agricultural road crossings would be replaced by a permanent crossings, either railcar bridges or large fish-friendly box culverts, to allow for clear passage of migratory fish. One agricultural crossing would be eliminated.
The 2009 National Marine Fisheries Service (NMFS) Biological Opinion (BiOp) recognized the importance of floodplain rearing habitat in, and fish passage throughout the Yolo Bypass. The 2009 BiOp requires the California Department of Water Resources (DWR) and U.S. Bureau of Reclamation (Reclamation) to complete several projects, including habitat restoration and fish passage improvements in the Yolo Bypass. DWR and Reclamation, the lead agencies for CEQA/NEPA, are working closely with landowners to ensure the projects’ goals are met and current land uses will continue.
FREMONT WEIR ADULT FISH PASSAGE MODIFICATION PROJECT
Yolo Bypass, CA
FISH PASSAGE IMPROVEMENTS
RESTORATION GOAL / TARGET
Improve adult fish passage at the Fremont Weir and along the Tule Canal
LOCATION AND LANDOWNER
The site is located in the Upper Yolo Bypass. The Fremont Weir is owned by the Sacramento-San Joaquin Drainage District. The agricultural crossings are owned by Knaggs Ranch.
FUNDING
DWR and Reclamation water contractor funding with support from Non-Governmental Organizations
TIMELINE
� Planning and Design - beginning 2016
� Permitting - completed in 2017
� Construction - 2018
PERMITTING
� All permits will be acquired before construction begins, including:
� Endangered Species Act
� California Endangered Species Act, Section 2081
� Clean Water Act, Section 404
� Clean Water Act, Section 401, Water Quality Certification
CALIFORNIA NATURAL RESOURCES AGENCY | RESOURCES.CA.GOV/ECORESTORE
� California Fish and Game Code Section 1602 (Streambed Alteration Agreement)
� Rivers and Harbors Act, Section 408
� National Historic Preservation Act, Section 106
� Central Valley Flood Protection Board Encroachment Permit
� CEQA/NEPA
� AB 52, Consultation with Native American Tribes
PROJECT PROPONENT
� Karen Enstrom California Department of Water Resources [email protected]
� Ben Nelson U.S. Bureau of Reclamation [email protected]
ADDITIONAL INFORMATION
DWR’s Yolo Bypass Salmonid Habitat Restoration and Fish Passage Project Website: https://www.water.ca.gov/Programs/Environmental-Services/Restoration-Mitigation-Compliance/Yolo-Bypass-Projects
SOLANOCOUNTY
CONTRA COSTACOUNTY
ALAMEDACOUNTY
SAN JOAQUINCOUNTY
YOLOCOUNTY
SUTTERCOUNTY
SACRAMENTOCOUNTY
80
80
505
680
5
5
99
99
12
4
50
CALIFORNIA NATURAL RESOURCES AGENCY | RESOURCES.CA.GOV/ECORESTORE
N
16
0
MILES
5 10 20
CALIFORNIA ECO RESTORE PROJECTS
Knights Landing Outfall Gate
Lindsey Slough
Sherman Island: Mayberry Farms
Sherman Island: Whale’s Mouth
Sherman Island: Mayberry Slough
Twitchell Island: East End
Decker Island
Dutch Slough
Fremont Weir Adult Fish Passage
Hill Slough
McCormack Williamson Tract
Tule Red
Wallace Weir Fish Rescue Facility
Bradmoor Island
Goat Island
Grizzly Slough
Lisbon Weir
Lower Putah Creek Realignment
Lower Yolo Ranch
Prospect Island
Sherman Island: Whale’s Belly
Southport Levee
Twitchell Island: Levee
Twitchell Island: West End
Yolo Bypass Floodplain Restoration
Winter Island
2016 / 2017(Target Construction Start Dates)
2018+(Target Construction Start Dates)
COMPLETED(Construction Completed)
Fish Passage Improvements
Floodplain Restoration
Setback Levee
Subsidence Reversaland Carbon Storage
Tidal Restoration
Yolo Bypass Boundary
Legal Delta and Suisun Marsh Boundaries
Water Bodies
LEGEND
FREMONT WEIR FISH PASSAGE
Fish Passage Improvements
Floodplain Restora on
Setback Levee
Subsidence Reversaland Carbon Storage
Tidal Restora n
Yolo Bypass Boundary
Legal Delta and Suisun Marsh Boundaries
Water Bodies
LEGEND
