DR. BRUCE HERBOLD: Delta Flows and the effects of water transfers

Dr. Bruce Herbold is a retired EPA fish biologist and now a consultant on the same issues.  In this presentation from the AquAlliance conference last fall, Dr. Herbold discusses drought, flows in the Delta, and the effects of transfers on the fish in the Delta. Dr. Herbold began by saying that managing water in California is fraught with difficulties, and […]

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FLOWS SYMPOSIUM, Part 4: Examples of Managed Flow Regimes – Possible Models for the Delta?; Panel Discussion

In January of 2013, a symposium hosted by Delta Science Program and the UC Davis Center for Aquatic Biology and Aquaculture (CABA) titled, What is a Natural Hydrograph in Regulated Rivers? The Science of Natural Flows to the Delta, explored how the hydrologic regime of Delta inflows are impacted by land-use changes, diversions from the watershed, and climate change. In […]

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FLOWS SYMPOSIUM, PART 3: Hydrographs and Ecological Functions in the Present-day Landscape of the Sacramento River; Ecological Response to the Unregulated Spring Flow Regime in the Sierra Nevada

In January of 2013, a symposium hosted by Delta Science Program and the UC Davis Center for Aquatic Biology and Aquaculture (CABA) titled, What is a Natural Hydrograph in Regulated Rivers? The Science of Natural Flows to the Delta, explored how the hydrologic regime of Delta inflows are impacted by land-use changes, diversions from the watershed, and climate change. In […]

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FLOWS SYMPOSIUM, PART 2: What Do We Mean by “Natural Functional Delta Inflow” in a Regulated and Modified System?; Delta Inflows of the Past: Lessons for Connecting Landscape Elements

In January of 2013, a symposium hosted by Delta Science Program and the UC Davis Center for Aquatic Biology and Aquaculture (CABA) titled, What is a Natural Hydrograph in Regulated Rivers? The Science of Natural Flows to the Delta, explored how the hydrologic regime of Delta inflows are impacted by land-use changes, diversions from the watershed, and climate change. In […]

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FLOWS SYMPOSIUM, PART 1: The science of natural functional flows to the Delta: In-stream flow science for sustainable river management

In January of 2013, a symposium hosted by Delta Science Program and the UC Davis Center for Aquatic Biology and Aquaculture (CABA) titled, What is a Natural Hydrograph in Regulated Rivers? The Science of Natural Flows to the Delta, explored how the hydrologic regime of Delta inflows are impacted by land-use changes, diversions from the watershed, and climate change. These […]

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BROWN BAG SEMINAR: Flow Dynamics and Transport of Water-Quality Constituents in the Sacramento-San Joaquin River Delta

Dr. David Schoellhamer, Research Hydrologist for the USGS, earned his bachelors degree in civil engineering from UC Davis and a doctorate in Coastal and Oceanographic Engineering from University of Florida.  He has studied sediment transport in the San Francisco Estuary since 1993.  He was the lead author for the chapter on flow dynamics and transport of water quality constituents in […]

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BAY DELTA SCIENCE CONFERENCE: Before and After: Evaluating the effect of the 1995 Delta spring standards on actual outflows into San Francisco Bay

Dr. Tina Swanson gives her analysis of the standard; has it really resulted in increased Delta outflow? Fresh water flowing into the Delta is highly contested and tightly managed. The current regulations for spring outflows were established in 1995, following a severe multi-year drought, lawsuits, fish population declines and several Endangered Species Act listings. These new standards were designed to […]

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BAY DELTA SCIENCE CONFERENCE: A Tale of Two Deltas: A Comparison of Transport Processes in the Predevelopment and Contemporary Delta

Modification of the Delta’s landscape has fundamentally changed hydrodynamic and transport processes in the Delta. In this presentation, Jon Burau, Project Chief for the USGS, compares the transport processes in the historical and contemporary Delta based on insights gained from field experiments and numerical model results. Jon Burau began by noting that the predevelopment Delta was a dendritic system, which […]

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Factors controlling the abundance and distribution of species in the Bay-Delta system

At a recent State Water Board meeting, Delta Lead Scientist Dr. Cliff Dahm summarizes four recent scientific reports on the fishes, flows, and other stressors in the Delta The stated mission of the Delta Science Program is to provide the best possible scientific information to inform water and environmental decisions in the Bay Delta estuary.  This includes organizing peer reviews […]

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Planning & Conservation League Symposium: What is happening in the Delta this year?

Panelists share different perspectives on the troubled estuary At the Planning and Conservation League’s annual symposium held earlier this year, one of the panel discussions focused on the Delta.  The panel discussion was not centered around the California Water Fix (more commonly known as the Delta tunnels project), but instead each panelist gave a different perspective on the estuary. The […]

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