Sacramento River

The Sacramento River region includes the entire drainage of the Sacramento River and its tributaries, spanning from Chipps Island in Solano County northward to Goose Lake in Modoc County. The state’s two largest water systems, the Central Valley Project and the State Water Project, originate here. Agriculture is the main driver, with over 1.5 million acres irrigated on the valley floor. Top grossing crops include rice, walnuts, almonds, and tomatoes.

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Central Valley Region Salt and Nitrate Management Plan

Central Valley Salinity Alternatives for Long-Term Sustainability (CV-SALTS) | January 19th, 2017

Summary

Elevated salinity and nitrates in surface water and groundwater are increasing problems affecting much of California, other western states, and arid regions throughout th

Elevated salinity and nitrates in surface water and groundwater are increasing problems affecting much of California, other western states, and arid regions throughout the world. In California, as surface and groundwater supplies become scarcer, and as wastewater streams become more concentrated, salinity and nitrate impairments are occurring with greater frequency and magnitude. In 2006, the Central Valley Water Board, the State Water Board, and stakeholders began a joint effort to address salinity and nitrate problems in California’s Central Valley and adopt long-term solutions that will lead to enhanced water quality and economic sustainability. Central Valley Salinity Alternatives for Long-Term Sustainability (CV-SALTS) is a collaborative basin planning effort aimed at developing and implementing a comprehensive salinity and nitrate management program. The goal of CV-SALTS is to maintain a healthy environment and a good quality of life for all Californians by protecting our most essential and vulnerable resource: WATER. In July 2008, the Central Valley Salinity Coalition (CVSC) was formed. CVSC represents stakeholder groups working with the Board in the CV-SALTS effort. Its purpose is to organize, facilitate and fund efforts needed to fulfill the goals of CV-SALTS. CVSC coordinates the meetings of the CV-SALTS committees, maintains an independent web site, and manages the projects originating from this effort. Information and materials regarding the stakeholder committees and other activity, including the meeting schedule, are posted on their website: www.cvsalinity.org. The Final SNMP for Central Valley Water Board Consideration was completed in December 2016. The Central Valley Water Board staff plans to release this version of the SNMP and all of its supporting attachments in January 2017 for a comment period so that the public has the opportunity to review the SNMP documentation before a general information workshop is held with the Central Valley Water Board, currently planned for March 2017.

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Challenges Facing the Sacramento-San Joaquin Delta: Complex, Chaotic, or Simply Cantankerous?

Delta Stewardship Council (Delta Council) | April 9th, 2015

Summary

In 2014, the California Natural Resources Agency and the U.S. Department of the Interior asked the authors of this paper, as four former leaders of The Delta Science Prog

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Changes in abundance and distribution of native and alien fishes of Suisun Marsh

American Fisheries Society (AFS) | July 29th, 1994

Summary

Overall fish abundance, abundance of introduced, native, and seasonal fish groups, and species diversity declined over a 14‐year period in Suisun Marsh, a portion of th

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Changing Channels: Regional Information for Developing Multi-benefit Flood Control Channels at the Bay Interface

San Francisco Estuary Institute (SFEI) | May 26th, 2017

Summary

Over the past 200 years, many of the channels that drain to San Francisco Bay have been modified for land reclamation and flood management. The local agencies that overse

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Changing Channels: Regional Information for Developing Multi-benefit Flood Control Channels at the Bay Interface

San Francisco Estuary Institute (SFEI) | April 3rd, 2017

Summary

Over the past 200 years, many of the channels that drain to San Francisco Bay have been modified for land reclamation and flood management. The local agencies that overse

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Changing ecosystems: a brief ecological history of the Delta

University of California, Davis (UC Davis) | February 15th, 2010

Summary

The San Francisco Estuary is a young estuary, about 6-10,000 years old in its present location. It became established during periods of high climatic variability (reflect

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Characterizing and quantifying nutrient sources, sinks and transformations in the Delta: synthesis, modeling, and recommendations for monitoring

San Francisco Estuary Institute (SFEI) | January 5th, 2016

Summary

The Sacramento-San Joaquin Delta (the Delta) receives high loads of the nutrients nitrogen (N) and phosphorous (P) from wastewater treatment effluent and agricultural run

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Characterizing changes in streamflow and sediment supply in the Sacramento River basin, California, using hydrological simulation program

Water, Multidisciplinary Digital Publishing Institute (MDPI) | September 30th, 2016

Summary

A daily watershed model of the Sacramento River Basin of northern California was developed to simulate streamflow and suspended sediment transport to the San Francisco B

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Civic Engagement and Water Data: How Can California Make Data Work for Decision Makers?

University of California, Berkeley (UC Berkeley) | September 1st, 2020

Summary

Much attention is focused on water data in California, and for good reason. California is struggling to make decisions that adapt its water systems to pressures such as

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Classifying California’s stream thermal regimes for cold-water conservation

PLOS | August 20th, 2021

Summary

Stream temperature science and management is rapidly shifting from single-metric driven approaches to multi-metric, thermal regime characterizations of streamscapes. Giv

Stream temperature science and management is rapidly shifting from single-metric driven approaches to multi-metric, thermal regime characterizations of streamscapes. Given considerable investments in recovery of cold-water fisheries (e.g., Pacific salmon and other declining native species), understanding where cold water is likely to persist, and how coldwater thermal regimes vary, is critical for conservation. California’s unique position at the southern end of cold-water ecosystems in the northern hemisphere, variable geography and hydrology, and extensive flow regulation requires a systematic approach to thermal regime classification. We used publicly available, long-term (> 8 years) stream temperature data from 77 sites across California to model their thermal regimes, calculate three temperature metrics, and use the metrics to classify each regime with an agglomerative nesting algorithm. Then, we assessed the variation in each class and considered underlying physical or anthropogenic factors that could explain differences between classes. Finally, we considered how different classes might fit existing criteria for cool- or cold-water thermal regimes, and how those differences complicate efforts to manage stream temperature through regulation. Our results demonstrate that cool- and cold-water thermal regimes vary spatially across California. Several salient findings emerge from this study. Groundwater-dominated streams are a ubiquitous, but as yet, poorly explored class of thermal regimes. Further, flow regulation below dams imposes serial discontinuities, including artificial thermal regimes on downstream ecosystems. Finally, and contrary to what is often assumed, California reservoirs do not contain sufficient cold-water storage to replicate desirable, reach-scale thermal regimes. While barriers to cold-water conservation are considerable and the trajectory of cold-water species towards extinction is dire, protecting reaches that demonstrate resilience to climate warming remains worthwhile.

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Sacramento River

Central Valley Region Salt and Nitrate Management Plan

Challenges Facing the Sacramento-San Joaquin Delta: Complex, Chaotic, or Simply Cantankerous?

Changes in abundance and distribution of native and alien fishes of Suisun Marsh

Changing Channels: Regional Information for Developing Multi-benefit Flood Control Channels at the Bay Interface

Changing Channels: Regional Information for Developing Multi-benefit Flood Control Channels at the Bay Interface

Changing ecosystems: a brief ecological history of the Delta

Characterizing and quantifying nutrient sources, sinks and transformations in the Delta: synthesis, modeling, and recommendations for monitoring

Characterizing changes in streamflow and sediment supply in the Sacramento River basin, California, using hydrological simulation program

Civic Engagement and Water Data: How Can California Make Data Work for Decision Makers?

Classifying California’s stream thermal regimes for cold-water conservation

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