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Systematic screening of dams for environmental flow assessment and implementation

Grantham, Theodore E Joshua Viers Peter Moyle

Published in BioScience

Environmental flow protections are crucial to the conservation of freshwater biodiversity in dam-regulated river systems. Nevertheless, the implementation of environmental flows has lagged far behind the pace of river ecosystem alteration. The vast number of dams now in operation and the substantial resources required to modify their operations sug...

Major River Allocations

Grantham, Theodore E Joshua Viers

Table of California water rights allocation volumes and percentages relative to supplies for about 100 river basins.

Climate change vulnerability of freshwater fishes in the San Francisco Bay Area

Quiñones, Rebecca M. Peter Moyle

Published in San Francisco Estuary and Watershed Science

Climate change is expected to progressively shift the freshwater environments of the San Francisco Bay Area (SFBA) to states that favor alien fishes over native species. Native species likely will have more limited distributions and some may be extirpated. Stream-dependent species may decline as portions of streams dry or become warmer due to lower...

100 years of Californias water rights system: patterns, trends and uncertainty

Grantham, Theodore E Joshua Viers

Published in Environmental Research Letters

For 100 years, Californias State Water Resources Control Board and its predecessors have been responsible for allocating available water supplies to beneficial uses, but inaccurate and incomplete accounting of water rights has made the state ill-equipped to satisfy growing societal demands for water supply reliability and healthy ecosystems. Here, ...

Economic Impacts of 2014 Drought on California Agriculture by Region

Richard Howitt Josué Medellín-Azuara Macewan, Duncan Jay Lund Sumner, Daniel

A regional breakdown of the estimated economic impact of the 2014 drought on California agriculture. This is an expansion of Table 5 in Howitt et al. (2014).

Economic Analysis of the 2014 Drought for California Agriculture

Richard Howitt Josué Medellín-Azuara Macewan, Duncan Jay Lund Sumner, Daniel

This report updates estimates on the drought\textquoterights effects on Central Valley farm production, presents new data on the state\textquoterights coastal and southern farm areas, and forecasts the drought\textquoterights economic fallout through 2016.The study found that the drought — the third most severe on record — is responsible for the gr...

Potential Factors Affecting Survival Differ by Run-Timing and Location: Linear Mixed-Effects Models of Pacific Salmonids...

Rebecca M., Quiñones Marcel, Holyoak Michael L., Johnson Peter Moyle

Published in PLoS ONE

Understanding factors influencing survival of Pacific salmonids (Oncorhynchus spp.) is essential to species conservation, because drivers of mortality can vary over multiple spatial and temporal scales. Although recent studies have evaluated the effects of climate, habitat quality, or resource management (e.g., hatchery operations) on salmonid recr...

Simulating High-Elevation Hydropower with Regional Climate Warming in the West Slope, Sierra Nevada

Rheinheimer, D. E. Joshua Viers Sieber, Jack Kiparsky, Michael Mehta, Vishal K. Ligare, Scott T.

Published in Journal of Water Resources Planning and Management

Water systems in snowmelt-dominated hydro-regions such as California\textquoterights Sierra Nevada mountains are sensitive to regional climate change, hydropower systems in particular. In this study, a water resources management model was developed for the upper west slope Sierra Nevada to understand the potential effects of regional climate warmin...

Preliminary 2014 Drought Economic Impact Estimates in Central Valley Agriculture

Richard Howitt Josué Medellín-Azuara Jay Lund Macewan, Duncan

Californias drought will deal a severe blow to Central Valley irrigated agriculture and farm communities this year, costing the industry 1.7 billion and causing more than 14,500 workers to lose jobs, according to preliminary results of a new study by the UC Davis Center for Watershed Sciences. Researchers estimated that Central Valley irrigators wi...

Water Temperature Patterns Below Large Groundwater Springs: Management Implications For Coho Salmon In The Shasta River,...

Andrew Nichols Ann Willis Carson Jeffres Deas, Michael

Published in River Research and Applications

Elevated stream temperature is a primary factor limiting the coho salmon (Oncorhynchus kisutch) population in California\textquoterights Shasta River Basin. Understanding the mechanisms driving spatial and temporal trends in water temperature throughout the Shasta River is critical to prioritizing river restoration efforts aimed at protecting this ...

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