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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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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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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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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BAY DELTA SCIENCE CONFERENCE: Drought, climate change, and restoration resiliency

John Durand looks at the effects of the 2012-2016 drought on the Delta from the environmental, economic, and stakeholder perspectives The 2012-2016 drought is one for the records in that, while not necessarily the driest or the longest for California since the state has been keeping records, it was the hottest drought with many scientists saying that we can expect […]

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BAY DELTA SCIENCE CONFERENCE: Emergent groundwater and sea level rise in the San Francisco Bay Area: the silent and largely unknown underground threat

The threats that sea level rise poses to coastal development from direct inundation are better understood than the threats due to rising groundwater levels. Rising sea level will raise the level of groundwater in coastal aquifers, resulting in damage to buried infrastructure and increased potential for flooding from groundwater inundation. Researchers at UC Berkeley and Silvestrum Climate Associates have performed […]

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BAY DELTA SCIENCE CONFERENCE: Checking assertions with data: Untangling factors that constrain water exports from the San Francisco Bay estuary

In recent years, media reports and editorials have suggested that environmental regulations have made Delta outflows increasingly large, project water exports are frequently limited or even halted by regulations to protect endangered species, and that regulations designed to protect endangered species, the Delta Smelt in particular, are the principal restrictions on exports and are thus responsible for most of the […]

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SF ESTUARY & WATERSHED SCIENCE: Ecocultural equality and restoration, Use of captive-reared Delta smelt for species recovery, Outflow and salt intrusion in the Delta; and more …

The latest issue of the San Francisco Estuary & Watershed Science is now online.  In this issue: ESSAY Ecocultural Equality in the Miwkoʔ Waaliʔ Don L. Hankins DOI // URL RESEARCH Western and Traditional Ecological Knowledge in Ecocultural Restoration Joy B. Zedler and Michelle L. Stevens DOI // URL Considerations for the Use of Captive-Reared Delta Smelt for Species Recovery and Research JoAnna Lessard, […]

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BAY DELTA SCIENCE CONFERENCE: Working With Nature Across the Land Use Spectrum: A Holistic Approach to Ecological Resilience

Many approaches to ecological restoration and enhancement of ecosystem services focus on particular parts of the landscape, such as open spaces high in watersheds, urban areas, agricultural areas, waterways, or shorelines. This approach to dividing up large physical and ecological systems might be easier to manage, but may fail to maximize benefits across the full system. At the 2018 Bay […]

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BAY DELTA SCIENCE CONFERENCE: Developing a Delta habitat restoration adaptive management program

Presentation covers what is adaptive management, why is it important, and why an adaptive management program is needed Habitat restoration is a key strategy in the Delta Plan to achieve the coequal goal of protecting, enhancing, and restoring the Delta ecosystem. Various efforts, including the California EcoRestore initiative and Proposition 1 grants administered by the Delta Conservancy and Department of […]

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