Long-Term Operation of the State Water Project in the Sacramento–San Joaquin Delta, Suisun Marsh, and Suisun Bay
11 Documents in Project
Summary
SCH Number
2023060467
Lead Agency
California Department of Water Resources
(DWR)
Document Title
Long-Term Operation of the State Water Project in the Sacramento–San Joaquin Delta, Suisun Marsh, and Suisun Bay
Document Type
NOD - Notice of Determination
Received
Posted
12/5/2025
Document Description
DWR is proposing an alternative decision-making approach to the collaborative approach described in the FEIR in section 2.3.3.2, Start of OMR Management, subsections of 2.3.3. Real-Time Adjustments, including Adult Delta Smelt Entrainment Protection Action and Larval and Juvenile Delta Smelt Protection Action, and section 2.3.22 Governance, subsection 2.3.22.4, Delta (2024 Incidental Take Permit for the Long-Term Operations of the California State Water Project Conditions of Approval [COAs] 8.5.1 and 8.6.1, which in turn would affect three of the Delta Smelt Actions [COAs 8.3.1, 8.3.2, 8.4.1]). The proposed modifications include the following: • The First Flush Action, Adult Delta Smelt Entrainment Protection Action (Turbidity Bridge) and Larval and Juvenile Longfin Smelt Protection Action will be added to the list of SWP management actions that are subject to assessment. o Assessments will propose operational adjustments within boundaries no more negative than -5,000 cfs OMR. o Assessments will include an evaluation of impacts to covered species by proposed operations, informed by available quantitative tools and real-time data, which may include entrainment and routing, modeling, distribution, and other real-time data, as appropriate. • Allow real-time assessment for Delta Smelt winter and spring entrainment protection actions. o DWR will provide an assessment framework that considers covered species impacts. o DWR will develop a science plan to improve understanding of Delta Smelt and salmonid movement and migration behaviors during the OMR low period that will inform the real-time assessment framework of OMR low management for Delta Smelt and Salmon and develop new operational conditions by 2029. No changes to SWP facilities or other operations are proposed.
Contact Information
Name
Rita A Wilson
Agency Name
ICF Jones & Stokes
Job Title
Biology Manager
Contact Types
Project Applicant
Phone
Email
Name
Christopher Wilkinson
Agency Name
California Department of Water Resources
Job Title
Environmental Program Manager
Contact Types
Lead/Public Agency
Phone
Location
Coordinates
Cities
Rio Vista, Tracy, West Sacramento
Counties
Alameda, Contra Costa, Sacramento, San Joaquin, Solano, Sutter, Yolo
Regions
Statewide
Waterways
Sacramento-San Joaquin Delta
Notice of Determination
Approving Agency
DWR
Approving Agency Role
Lead Agency
Approved On
Determinations
(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
Yes
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
No
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
No
(4) A mitigation reporting or monitoring plan was adopted for this project
No
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
Yes
Attachments
Notice of Determination
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