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DECKER ISLAND TIDAL HABITAT RESTORATION PROJECT Solano County

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DECKER ISLAND TIDAL HABITAT RESTORATION PROJECT Solano County DECKER ISLAND TIDAL HABITAT RESTORATION PROJECT Solano County TIDAL WETLAND The Department of Water Resources’ (DWR) Fish Restoration Program (FRP) acquired approximately 140 acres on Decker RESTORATION GOALS / TARGET Island in 2015 for tidal wetland restoration. Decker Island was The goals of the effort are to: created by the U.S. Army Corps of Engineers (USACE) during the construction of the Sacramento River Deep Water Ship Enhance habitat appropriate for spawning and/or Channel in the early 1900’s. Decker Island is bordered on the rearing salmonids, Delta Smelt, and other native fish west by the Sacramento River and on the east and south by species, enhance available productivity for native Horseshoe Bend. The Decker Island Tidal Habitat Restoration fish within and adjacent to the restoration site; Project (Project) is intended to partially fulfill DWR’s 8,000- and provide connectivity to the marsh plain for acre tidal habitat restoration obligations pursuant to the 2008 migrating salmonids. U.S. Fish and Wildlife Service (USFWS) Delta Smelt Biological Opinion (BiOp) for long-term coordinated operations of the LOCATION AND LANDOWNER State Water Project (SWP) and the federal Central Valley Project (CVP). Additionally, the Project would also be consistent The site is in Solano County on the eastern side of with the 2009 National Marine Fisheries Service (NMFS) Decker Island, along Horseshoe Bend. DWR became the Salmonid BiOp for SWP/CVP operations because tidal habitat landowner of the 140-acre site in 2015. restoration would provide access for salmonid rearing at Decker FUNDING Island. Fully funded by the SWP for all phases of the effort The goal of the Project is to restore unrestricted tidal connectivity to the interior of Decker Island to create a tidal PERMITTING wetland and associated high marsh, and riparian habitats on Permits and environmental compliance in process or the site to benefit native fish species. To achieve this goal, submitted: the Project will involve breaching the perimeter levee to restore tidal hydrology to the site. The Project consists of • USACE - 404 and 408 Permission restoration planning, modeling, design, permitting, construction, and monitoring. Preliminary planning, conceptual design, • National Historic Preservation Act - Section 106 baseline data collection (e.g. topography and bathymetry), and hydrodynamic modeling were conducted in 2015. In 2016, • USFWS - Section 7 FRP continued with restoration planning and environmental compliance documentation preparation. DWR is the CEQA Lead • NMFS - Section 7 Agency for this project. A draft Mitigated Negative Declaration (MND) was released for public review on August 4, 2016. CALIFORNIA NATURAL RESOURCES AGENCY | RESOURCES.CA.GOV/ECORESTORE CALIFORNIA ECO RESTORE PROJECTS 2016 / 2017 SUTTER (arget Construction Start Dates) N COUNTY Decker Island 5 99 Dutch Slough Fremont Weir Adult Fish Passage 80 Hill Slough McCormack Williamson Tract YOLO Tule Red 505 COUNTY Wallace Weir Fish Rescue Facility 50 2018+ SACRAMENTO (arget Construction Start Dates) 16 COUNTY Bradmoor Island 99 80 Goat Island SOLANO Grizzly Slough Central Valley Flood Protection Board COUNTY • Encroachment Permit, including USACE Section Lisbon Weir 408 review Lower Putah Creek Realignment Central Valley Regional Water Quality Control Board 5 • Section 401 and Waste Discharge Report Lower Yolo Ranch State Lands Commission Prospect Island • Notice of Proposed Use of State Lands Sherman Island: Whale’s Belly California Department of Fish and Wildlife: SouthportLevee • Streambed Alteration Agreement Section 1600 Twitchell Island: Levee • Potentially an Incidental Take Permit 12 Twitchell Island: West End Delta Stewardship Council • Delta Plan Consistency Determination Yolo Bypass Floodplain Restoration CEQA compliance status: MND circulated and DECKER Winter Island expected to be certified in October 2016 ISLAND ESTIMATED TIMELINE COMPLETED August 2016: Draft CEQA document filed at State (Construction Completed) Clearinghouse Fall 2016: Permit applications submitted Knights Landing Outfall Gate LEGEND 680 Fish Passage Improvements February 2017: Permits obtained Lindey Slough Floodplain Restora on Setback Levee June 2017: Construction specifications complete Subsidence Reversal Sherman Island: Mayberry Farms and Carbon Storage LEGEND Tidal Restora n August 2017: Begin construction 4 Sherman Island: Whale’s Mouth Yolo Bypass Boundary Fih Passage ImprovementLegals Delta and Suisun Marsh November 2017: Construction complete Boundaries Sherman Island: Mayberry Slough Floodplain Restoration Water Bodies PROJECT PROPONENT Setback Levee CONTRA COSTA Twitchell Island: East End COUNTY Department of Water Resources, Subidence Reveral Fish Restoration Program and Carbon Storage Ling-ru Chu [email protected] Tidal Restoration (916) 376-9826 Yolo Bypass Boundary ADDITIONAL INFORMATION SAN JOAQUIN 0 5 10 20 Legal Delta and Suisun Marsh COUNTY Department of Water Resources: Boundaries ALAMEDA MILES http://www.water.ca.gov/environmentalservices/frpa_ COUNTY decker_restoration.cfm Water Bodies CALIFORNIA NATURAL RESOURCES AGENCY | RESOURCES.CA.GOV/ECORESTORE CALIFORNIA NATURAL RESOURCES AGENCY | RESOURCES.CA.GOV/ECORESTORE.
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