Sacramento River Ecological Flows Study
Welcome to the Sacramento River Ecological Flows Study information page. Below you will find links to documents produced in this Study that are available for download.
At the time of this Study's formulation, the CALFED program reflected the perspective of an emerging body of literature, which supports the interconnections between a river's flow regime and the species that have adapted to live within the riverine environment. CALFED's Ecosystem Restoration Plan Strategic Goal 2 included restoring the variability of the flow regime and associated river processes, "as an important component of restoring ecological function and supporting native habitats and species in the Bay-Delta ecosystem". The project was formulated to address CALFED program goals and hopefully lead to restoration and conservation of species and an eventual decrease in regulation.
The Study is specifically not focused on returning the river to some historic and un-altered flow regime. Instead, the Study seeks to identify how the river's flow regime (i.e., the magnitude, timing, duration, and frequency of flow) and management actions (such as gravel augmentation and changes in bank armoring) influence habitats, species, and hydrogeomorphic processes in the riparian corridor. Maintenance or restoration of the critical elements of these ecological processes and characteristics could contribute to a more well informed future development of scarce resources while still providing for human needs.
Linking Biological Responses to River Processes: Implications for Conservation and Management of the Sacramento River-A Focal Species Approach (Appendix A, Task 1) (10679k) Adobe PDF
Field and Modeling Studies
- Gravel Study Final Report (Appendix B, Subtasks 2.1 & 2.3) (6516k) Adobe PDF
- Off-Channel Habitats Final Report (Appendix C, Subtask 2.2) (12382k) Adobe PDF
- Meander Migration Final Report (Appendix D, Subtask 2.5) (4087k) Adobe PDF
- The Unified Gravel and Sand Model (TUGS) Simulation of the Sacramento River Between Keswick Dam and Clear Creek Final Report (Appendix E, Subtask 3.1) (694k) Adobe PDF
Sacramento River Ecological Flows Tool (SacEFT)
- SacEFT Backgrounder Report (3611k) Adobe PDF
- SacEFT Design Guidelines (2698k) Adobe PDF
- SacEFT Analysis (Appendix F, Task 3) (2776k) Adobe PDF
Final Report
- Final Report (2053k) Adobe PDF
For further information, please contact:
Ryan Luster
The Nature Conservancy
500 Main St., Chico, CA 95928
rluster@tnc.org
(530) 897-6370, ext. 213
Funded by grants to The Nature Conservancy from the CALFED Ecosystem Restoration Program (# ERP-02D-P61) and the Resources Legacy Fund Foundation
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