2021 Events Spring Pulse Flow Science-Sharing Webinar December 9, 2021: Workshop Materials Spring Pulse Scenario Planning Presentation Science Sharing Webinar Spring Pulse Flows: https://www.youtube.com/watch?v=DQby-rxsgBs CVPIA Habitat Restoration Update to Science Subcommittee October 28, 2021: Workshop Materials CVPIA Habitat Restoration Update Presentation CVPIA Habitat Restoration Video: https://www.youtube.com/watch?v=6W7Qu2pJRiw Floodplain Science & Management Symposium October 13-15, 2021 : Symposium Materials Information, recordings, presentations, and background materials. Fish Trends Webinar May 21, 2021: Presentations Red Bluff Trapping Counts, RSTs, and Winter-Run JPE Summary (Bill Poytress, USFWS) Summary of 2020 Acoustic Tagging Results (Jeremey Notch, SWFSC/NMFS) Flow-Survival Paper (Cyril Michel, SWFSC/NMFS) Shasta Fall Flow Coordination and Shallow Redd Monitoring in 2020 (Matt Johnson, CDFW) Planned 2021 Monitoring (Evan Sawyer, NMFS) Temperature Dependent Mortality Modeling Webinar February 4, 2021: Presentations Sacramento River Temperature Dependent Mortality Modeling Science Webinar Additional Information Targeting river operations to the critical thermal window of fish incubation: model and case study on Sacramento River winter-run Chinook salmon (Anderson et al.) , including Supplemental Information Effects of Temperature on early early-life survival of Sacramento river fall- and winter-run Chinook salmon. 1996 USFWS final report Spawn Timing of Winter-Run Chinook Salmon in the Upper Sacramento River (E. Dusek Jennings and A. N. Hendrix (2020)) DOI: https://doi.org/10.15447/sfews.2020v18iss2art5 Temperature Modeling Webinar January 29, 2021: Presentations Sacramento River Temperature Modeling Science Webinar Please email info@sacriverscience.org to be added to the event notification list.

Sacramento River Science Partnership A voluntary science enterprise established to inform joint learning on species recovery and water management on the mainstem of the Sacramento River Steelhead at Coleman Hatchery Salmon Eggs Adult Central Valley Spring-Run Chinook Steelhead at Coleman Hatchery 1/19

Research Priorities The Sacramento River Science Partnership Charter includes the following research priorities: Understanding temperature tolerances and other conditions necessary for salmonid egg incubation and early life stages. Understanding non-temperature sources of mortality including, pathogens, predation, lack of suitable spawning habitat, and redd de-watering, among others. Understanding conditions necessary for juvenile spring-run survival. Assessing the quantity, condition and habitat needs of emerging juvenile fry and smolts, including synthesizing information from existing monitoring and advances in genetics and otolith research, and exploring management relevance. Developing decision support tools for species recovery including physical and biological modeling and exploring integration with management questions including understanding effects between species. Understanding research needs associated with reintroductions of winter run Chinook Salmon. Understanding the fishery needs within the Sacramento Mainstem with a focus on salmonids and concern for other species of interest as well. Understanding key physical and engineering constraints associated with operations and diversions.

2025 Events Sacramento River Fish Trends SRSP Science-Sharing Webinar - March 14, 2025 2025 Fish Trends Final Agenda 2025 Fish Trends Webinar Video Fish Trends presentation files Winter-run Chinook Carcass and Redd Surveys (Killam) Red Bluff Trapping Counts, RSTs, and Winter-run Chinook JPE Summary (Poytress and McCraney) Winter-run Chinook Population Analysis, 2020-2023: Application of Parentage-Based Designs (Blankenship) Chinook Salmon Smolt Mortality Hotspots on the Sacramento River (Michel) Spring-run Chinook Salmon Emergency Egg Incubation Action: Clear Creek, 2024 (Memeo) Central Valley Spring-run Chinook Salmon Population Monitoring: Mill and Deer Creeks (Revnak) 2024 Fall-run Chinook Salmon Escapement (Hause) Sacramento River Fall-run Chinook Spawner-Recruit Relationship (Cavallo) Please email info@sacriverscience.org to be added to the event notification list.

There are no upcoming events at this time. Sacramento River Science Partnership Annual Workshop Thursday, October 26, 2023 9:00 am – 4:15 pm Lake Natoma Inn, Folsom CA Registration closes on October 20, 2023 Register Here! Sacramento River S cience Partnership (SRSP) is excited to announce its 2023 Fall Workshop. We hope you will be able to join us in person, though there will also be a virtual option. Registration closes - Friday 10/20/2023 Cost of ticket includes lunch, snack, and coffee Objectives Share information on water management based on ever changing hydrology, with outcomes and lessons learned from Victoria, Australia for application to California’s conditions. Share understanding of potential application of the Victorian Objectives to the Central Valley. Agenda Managing Water for the Environment During Drought: Lessons from Victoria, Australia - Theodore Grantham, Public Policy Institute of California Current strategies for considering seasonal hydrology when adapting management decision a. David Mooney, U.S. Bureau of Reclamation b. Levi Johnson, U.S. Bureau of Reclamation 3. Yolo Bypass Salmonid Habitat Restoration and Fish Passage Project a. Elizabeth Vasquez, Department of Water Resources Please reach out with any questions to: mschiappi@kearnswest.com Directions to Lake Natoma Inn Directions to Lake Natoma Inn from Historic Folsom Light Rail Station (0.3 mi): Head northwest on Reading Street to Leidesdorff Street; turn right onto Leidesdorff Street. Turn left onto Gold Lake Drive and continue to Lake Natoma Inn. Directions from Sacramento: Take US 50 east, exit at Folsom Blvd. and turn left. Follow Folsom Boulevard 4 miles to Greenback Lane. At Greenback Lane, turn right and continue over the Rainbow Bridge. Stay to the right onto Leidesdorff Street. The road will curve sharply to the right; take the first right onto Gold Lake Drive. Presentation Recordings 9/4/25: Unifying Salmon Monitoring Through Genetic Intelligence , Scott Blankenship, Cramer Fish Sciences 9/4/25: Parentage-Based Tagging (PBT) and Potential Applications to California Chinook Harvest and Escapement Monitoring and Modeling , Will Satterthwaite, NOAA Southwest Fisheries Science Center 9/11/25: Fry as a Lost Life History Strategy , Stephanie Carlson, UC Berkeley

Resources Sacramento Science Collaboratives CSAMP CVPIA Science Integration Team Central Valley Salmon Habitat Partnership Data Repositories Brood Year 2019 Winter-Run Chinook Salmon Operations and Monitoring Assessment CSAMP at Bay-Delta Live SacPAS Reclamation Information Sharing Environment (RISE) NOAA Fisheries Science and Data Environmental Data Initiative (EDI) SRWP Data Portal IEP Interagency Ecological Program Sacramento River Technical Teams Sacramento River Temperature Task Group Water Operations Management Team Documents

Parentage Based Tagging (PBT) The SRSP’s Science Subcommittee has been charged with hosting a series of science sharing presentations focused on parentage based tagging (PBT). The goals of these presentations include: Develop a shared understanding of PBT among a variety of audiences including scientists, field technicians, fishermen, water users, agency staff, and NGOs. Develop a shared understanding PBT as a tool that can be used to meet a range of objectives using lessons learned from other regions and applications. Presentation Recordings 9/4/25: Unifying Salmon Monitoring Through Genetic Intelligence , Scott Blankenship, Cramer Fish Sciences 9/4/25: Parentage-Based Tagging (PBT) and Potential Applications to California Chinook Harvest and Escapement Monitoring and Modeling , Will Satterthwaite, NOAA Southwest Fisheries Science Center 9/11/25: Fry as a Lost Life History Strategy , Stephanie Carlson, UC Berkeley 12/5/25: Tracking fish too small to tag: PBT at Coleman National Fish Hatchery - Christian Smith, USFWS 12/11/25: The Origins of PBT and its Applications in the California Central Valley , Carlos Garza, NOAA and Anthony Clemento, UC Santa Cruz 1/8/2026: Applying Parentage Methods to Detect Gravel Augmentation Effects on Juvenile Chinook Salmon Recruitment Rates , Scott Blankenship, Cramer Fish Sciences 1/22/2026: Monitoring Fall-run Chinook Salmon Life Stage Release Diversification Using Parentage Based Tagging Mike Brown, CDFW 3/12/2026: Genetic Monitoring of Salmonids in the Columbia River Basin , Shawn Narum, Jon Hess, and Rebekah Horn, Columbia River Inter-Tribal Fish Commission (CRITFC) Upcoming Presentations

Objectives Disclose and discuss ongoing and planned monitoring, biological and physical modeling, and analysis and synthesis related to voluntary species recovery and water management goals. Disclose and discuss priorities for reducing uncertainty regarding the conditions necessary to achieve desired fishery and water management goals by developing and applying one or more conceptual models linking actions to expected outcomes to provide for transparency in the scientific basis for decision making and priorities. Identify and pursue opportunities to consolidate the number of collaborative forums addressing fishery needs in the upper Sacramento River watershed and support a regional structured decision-making process (that includes structured decision-making under the Central Valley Project Improvement Act). Coordinate a Science and Monitoring Plan for the upper Sacramento River that is integrated with other science and monitoring efforts addressing Central Valley salmon stocks. Develop and undertake experimental actions to test hypotheses and address shared priority management questions. Facilitate and establish protocols for collaboration among the scientific and stakeholder community for the discussion of findings, prior to publication, and the shared synthesis of new science into decision support models. Identify and understand the trade-offs of decisions between different species and water uses.

Who We Are Formed in 2018, to establish and maintain a science enterprise for voluntary collaborative research, modeling, monitoring, and synthesis relevant to salmonid and other in-river species recovery and water management on the main stem Sacramento River to facilitate joint learning and fact-finding between and among scientists and managers. Members Bureau of Reclamation California Department of Fish & Wildlife Department of Water Resources Southwest Fisheries Science Center National Oceanic and Atmospheric Administration US Fish & Wildlife Service Sacramento River Settlement Contractors SRSP Documents Sacramento River Science Partnership Project Brief Sacramento River Science Partnership Charter

Available GCID Videos YouTube Playlist GCID Pump Station and Canal Flyover GCID Rice Fields Flyover

2021 Floodplain Science & Management Symposium The Sacramento River Science Partnership (SRSP) hosted a virtual Floodplain Science and Management Symposium focused on the Sacramento River watershed on October 13-15, 2021 . Decision-makers, managers, scientists, and project proponents from across state and federal resource agencies, academic institutions, NGOs, and landowning and growing communities joined over Zoom in conversation about floodplains’ role in salmonid recovery and management questions related to more intensively managed floodplain projects. Other stakeholders and community members interested in listening and learning watched the presentation via livestream. Scroll down to find links to recordings of the event, presentation slides, and background materials. The OBJECTIVES of the symposium were to: Share floodplain science research – including work on flood bypasses and agricultural fields as well as more natural floodplains – to build a joint understanding of floodplain ecological function and its relationship with salmonid and green sturgeon recovery; Identify existing gaps in knowledge related to the role of floodplains in successful recovery for salmonids and green sturgeon in the Sacramento River watershed; Explore lessons learned from existing floodplain habitat projects and recent permitting efforts in the Sacramento watershed, and the tools and methodologies currently used to evaluate benefits and potential risks of management actions to salmonids and green sturgeon; and Inform a management conversation about what additional information and/or metrics for monitoring and evaluation are needed to assess, scale, and adaptively manage more intensively managed floodplain projects to benefit salmonids and green sturgeon at a population scale. AGENDA: The agenda is linked here . The first portion of the symposium (on October 13 and the morning of October 14) focused on building a joint understanding of the state of floodplain science in the context of the salmonid life cycle. The remaining portion of the symposium (October 14 and the morning of October 15) focused on the management context in which this science is being used, including exploring questions resource agencies and other stakeholders have about assessing the benefits and risks of management actions on floodplains to salmonids and green sturgeon, the tools and methodologies currently used to evaluate those benefits and risks, and what has been learned from completed and ongoing floodplain management activities. MEETING DOCUMENTATION & SUMMARIES: Recordings of all three days of the event are available on YouTube: Day 1: Wednesday, October 13, 9am-3:45pm Day 2: Thursday, October 14, 9am-3:45pm Day 3: Friday, October 15, 9am-12pm The presentation slides are organized according to agenda topic and linked below: Introductions & Keynote Presentation Hydrologic Function The Adult Experience The Juvenile Experience Closing Presentation (Ted Sommer) Synthesis Discussions of Science Presentations Management Context for Floodplain Science Managed Floodplain Projects: Case Studies & Tools for Evaluation of Benefits, Risks, & Feasibility Synthesis Discussions of Management-focused Presentations BACKGROUND MATERIALS: Floodplain Science Summary Summary of Ecological and Physical Conditions Characterizing Sacramento River Floodplain Habitats and Importance for Anadromous Fish This paper summarizes the state of the science regarding the function and role of floodplains in aquatic ecosystems in general, and specifically their role with respect to anadromous salmonids and sturgeon in the Sacramento Valley and portions of the Sacramento-San Joaquin Delta. It was drafted by staff at Anchor QEA in collaboration with the Planning Committee. NMFS White Paper NMFS’ White Paper on Central Valley Floodplain Management for Salmon: Considerations for Balancing Food Web Productivity and Fish Viability First distributed in 2019, NMFS lightly revised and condensed this paper for the Floodplain Symposium. The purpose of this document is to advance the dialogue with scientists, restoration practitioners, other agencies, and stakeholders by summarizing current science, outlining areas of agreement and disagreement, and recommending considerations to help make choices about active versus passive floodplain restoration design. Managed Floodplain Design Criteria CDFW and DWR Managed Floodplain Design Criteria and Considerations (September 2020) This document was referenced in multiple of the Thursday and Friday management-focused talks by NMFS and CDFW staff. The document is a collaborative effort between California Department of Fish & Wildlife (CDFW) and California Department of Water Resources (DWR) to identify key attributes for optimizing juvenile salmonid rearing habitat in managed agricultural floodplains, while providing for adult passage. List of Floodplain Science Documents This is a collaboratively compiled list of published papers germane to Sacramento Valley floodplains (habitat, ecosystem function, use by salmonids, etc.) and not meant to be inclusive of all relevant science. This list is being provided to the community as a tool to facilitate access to peer-reviewed and gray literature on these topics but without endorsement of the contents. We encourage attendees to add any additional relevant papers to the spreadsheet . ADDITIONAL MATERIALS DISCUSSED DURING SYMPOSIUM: California Department of Fish and Wildlife Document Library This online library contains fish rescue reports for Fremont Weir-Yolo Bypass and Tisdale Weir-Tisdale-Sutter Bypass. NMFS Fish Passage Guidelines and Other Related Resources Information and Resources about Dams on the West Coast Anadromous Salmonid Passage Facility Design California Screening Criteria Please email info@sacriverscience.org to be added to the event notification list.