BAY DELTA SCIENCE CONFERENCE: Harvest, Hatchery Returns, and Straying of Salmon Released at Bay and Delta sites during California’s Drought

The U.S. Fish and Wildlife Service’s Coleman National Fish Hatchery is the largest salmon hatchery in California, annually producing 12 million fall Chinook Salmon smolts that substantially contribute to California’s ocean and inland fisheries. Standard practice at Coleman NFH is to release smolts on-site into Battle Creek; however, during the severe drought of 2014 and 2015, degraded water quality throughout […]

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PANEL DISCUSSION: What do the new water conservation and efficiency requirements mean for your water agency?

California’s changing climate requires residents to move beyond temporary emergency drought measures and adopt permanent changes to use water more wisely and prepare for more frequent and persistent periods of limited water supply. In recognition of that,  Governor signed SB 606 and AB 1668 May 31, 2018 which set new water efficiency standards and strengthened planning requirements for water suppliers, […]

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BAY DELTA SCIENCE CONFERENCE: A Review of Water Quality Science in the Delta: Chemical contaminants and nutrients

As part of its charge to review science activities that support adaptive management in the Delta, the Delta Independent Science Board (DISB) has completed a review of the scientific basis for assessing water quality in the Delta.  The review focused on chemical contaminants and nutrients and assessing how water quality information is being used in management decisions, especially for  supporting […]

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METROPOLITAN WATER PLANNING & STEWARDSHIP COMMITTEE: Coordinated Operations Agreement for the SWP/CVP, Voluntary settlement agreements

At the January meeting of Metropolitan Water District’s Water Planning and Stewardship Committee, Bay Delta Initiatives Manager Steve Arakawa updated the Committee with details on the Voluntary Settlement Agreement that was proposed to the State Water Board, the renegotiated Coordinated Operations Agreement (COA) for the State Water Project (SWP) and the Central Valley Project (CVP), and the status of the […]

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DR. JEFF MOUNT: Ecosystem Water Budgets: A Novel Approach to Managing Water for the Environment

Dr. Jeff Mount has a long history of involvement with science issues in the Delta.  As a professor at UC Davis, he started the Center for Watershed Sciences, which became home to researchers working on the Delta; he was on the first iteration of the Delta Independent Science Board and eventually became its chair; and he has been a very […]

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CA WATER COMMISSION: Climate change effects on the State Water Project and Central Valley Project

The latest climate change assessments show reduced Delta exports and carryover storage due to climate change likely by mid-century In the latter half of 2018, both the federal and state governments released new climate change assessments that outline the projected course of climate change and its potential effects on water resources.  Both federal and state assessments include chapters on water […]

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California Water Plan Update 2018: Managing water resources for sustainability

The draft of the update, just under 50 pages, is a much more trimmed down version of its predecessors and includes cost estimates and funding options; public comment period through January 21st Kamyar Guivetchi is with the California Department of Water Resources, Statewide Integrated Water Management Branch where one of the main activities is updating the California Water Plan every […]

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SAN FRANCISCO ESTUARY AND WATERSHED SCIENCE JOURNAL: Analyses of large storms and atmospheric rivers; Evaluations of fish surveys; Impacts of predator species on juvenile salmon; Alternative juvenile salmon production estimate approaches

RESEARCH Hourly Analyses of the Large Storms and Atmospheric Rivers that Provide Most of California’s Precipitation in Only 10 to 100 Hours per Year Maryam A. Lamjiri, Michael D. Dettinger, F. Martin Ralph, Nina S. Oakley, and Jonathan J. Rutz DOI // URL An Evaluation of Three Fish Surveys in the San Francisco Estuary, 1995–2015 James T. Peterson and Miguel F. Barajas […]

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WESTERN GROUNDWATER CONGRESS: Multiple perspectives on groundwater-surface water interactions under SGMA

Panel discussion looks at groundwater-surface water interactions under SGMA from a regulatory, environmental, academic, and policy perspective The Sustainable Groundwater Management Act defines sustainable groundwater management in terms of avoiding six undesirable results defined in the legislation: declining groundwater levels, reduction in groundwater storage, land subsidence, sea water intrusion, water quality degradation, and depletion of interconnected surface water.  Of these […]

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CAL WATER FIX HEARINGS: Protestors write State Water Board, say hearing cannot be finalized

Recent developments propose significant changes to project operations that are not reflected in the modeling, they say Several letters were delivered to the California Water Fix hearing team at the State Water Board yesterday saying that in light of the recent developments, the hearing cannot be finalized and the Board must now reexamine how or if the hearings can go […]

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