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Reduced Moisture Transport Linked to Drought Propagation Across North America

American Geophysical Union (AGU) | July 24th, 2019

Summary

Droughts reduce the availability of water, which affects communities and ecosystems worldwide. Recent studies have shown that droughts may travel up to thousands of kilom

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Reduced resilience as an early warning signal of forest mortality

Nature Portfolio (Springer Nature) | October 7th, 2019

Summary

Climate-induced forest mortality is being widely observed across the globe. Predicting forest mortality remains challenging because the physiological mechanisms c

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Reducing Methylmercury Accumulation in the Food Webs of San Francisco Bay and Its Local Watersheds

San Francisco Estuary Institute (SFEI) | April 8th, 2014

Summary

San Francisco Bay (California, USA) and its local watersheds present an interesting case study in estuarine mercury (Hg) contamination. This review focuses on the most pr

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Reduction of Nitrates in Groundwater – Agricultural Expert Panel Report

California State Water Resources Control Board (SWRCB) | September 9th, 2014

Summary

Recommendations to the State Water Resources Control Board pertaining to the Irrigated Lands Regulatory Program The Agricultural Expert Panel (Panel) was convened to a

Recommendations to the State Water Resources Control Board pertaining to the Irrigated Lands Regulatory Program The Agricultural Expert Panel (Panel) was convened to address thirteen questions posed by the State Water Resources Control Board (State Water Board). The questions were primarily technical in nature, and are abbreviated below. 1. How can risk to or vulnerability of groundwater best be determined in the context of a regulatory program such as the Irrigated Lands Regulatory Program (ILRP)? 2. Evaluate and develop recommendations for the current approaches taken to assessing risk to or vulnerability of groundwater. 3. How can risk to or vulnerability of surface water best be determined in the context of a regulatory program such as the ILRP? 4. Evaluate and develop recommendations for the current approaches taken to assessing risk to or vulnerability of surface water. 5. What management practices are expected to be implemented and under what circumstances for the control of nitrogen? 6. What management practices are recommended for consideration by growers when they are selecting practices to put in place for the control of nitrogen? 7. Evaluate and make recommendations regarding the usage of various nitrogen management and accounting practices. 8. Evaluate and make recommendations regarding the most effective methods for ensuring growers have the knowledge required for effectively implementing recommended management practices. 9. What measurements can be used to verify that the implementations of management practices for nitrogen are as effective as possible? 10. Evaluate and make recommendations regarding the usage of various verification measurements of nitrogen control. 11. Evaluate the relative merits, and make recommendations regarding the usage of, surface water measurement systems derived from either receiving water or a discharge monitoring approach to identify problem discharges. 12. Evaluate and make recommendations on how best to integrate the results of the Nitrogen Tracking and Reporting System Task Force with any above recommendation regarding management practices and verification measures. 13. Evaluate and make recommendations on the reporting requirements to report budgeting and recording of nitrogen application on a management block basis versus reporting aggregated numbers on a nitrate loading risk unit level.

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Reference Guide to On-Farm Groundwater Recharge on Annual Cropland | Recommendations for Creating Waterbird Habitat Benefits

Nature Conservancy | May 1st, 2019

Summary

With the Sustainable Groundwater Management Act (SGMA) requiring basins to balance water budgets and manage groundwater sustainably, there is an opportunity to demonstr

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Refinement of Rice Water Consumptive Use During the Growing Season — Sacramento Valley

University of California, Davis (UC Davis) | June 6th, 2018

Summary

The purpose of this study is to evaluate crop water use for the most commonly grown paddy rice variety grown in the Sacramento Valley, M206, based on field data collected

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Refinement of Rice Water Consumptive Use During the Growing Season — Sacramento Valley Phase II — Cal-SIMETAW Model Study

California Department of Water Resources (DWR) | June 6th, 2018

Summary

The purpose of this study is to evaluate crop water use for the most commonly grown paddy rice variety grown in the Sacramento Valley, M206, based on field data collected

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Reforming Davis-Dolwig: Funding Recreation in the State Water Project

Legislative Analyst's Office (LAO) | March 19th, 2009

Summary

The Davis-Dolwig Act is a 47-year-old state law that specifies that the state, not water ratepayers, should fund the recreation component of the the State Water Project (

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Reforming Watershed Restoration: Science in Need of Application and Applications in Need of Science (The H.T. Odum Synthesis Essay)

Estuaries and Coasts (Springer) | December 23rd, 2008

Summary

Coastal and inland waters are continuing to decline in many parts of the world despite major efforts made to restore them. This is due in part to the inadequate role that

Coastal and inland waters are continuing to decline in many parts of the world despite major efforts made to restore them. This is due in part to the inadequate role that ecological science has played in shaping restoration efforts. A significant amount of fundamental ecological knowledge dealing with issues such as system dynamics, state changes, context-dependency of ecological response, and diversity is both under-used by managers and practitioners and under-developed by ecologists for use in real-world applications. Some of the science that is being ‘used’ has not been adequately tested. Thus, restoration ecology as a science and ecological restoration as a practice are in need of reform. I identify five ways in which our ecological knowledge should be influencing restoration to a far greater extent than at present including a need to: shift the focus to restoration of process and identification of the limiting factors instead of structures and single species, add ecological insurance to all projects, identify a probabilistic range of possible outcomes instead of a reference condition, expand the spatial scale of efforts, and apply hierarchical approaches to prioritization. Prominent examples of restoration methods or approaches that are commonly used despite little evidence to support their efficacy are highlighted such as the use of only structural enhancements to restore biodiversity. There are also major gaps in scientific knowledge that are of immediate need to policy makers, managers, and restoration practitioners including: predictive frameworks to guide the restoration of ecological processes, identification of social-ecological feedbacks that constrain ecosystem recovery and data to support decisions of where and how to implement restoration projects to achieve the largest gains. I encourage ecologists to respond to the demand for their scientific input so that restoration can shift from an engineering-driven process to a more sustainable enterprise that fully integrates ecological processes and social science methods.

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Regional Governance of Flood Management in the Central Valley

California Department of Water Resources (DWR) | May 30th, 2014

Summary

California faces significant challenges in managing its highly variable water resources, particularly as climate change and a growing population exacerbate drought and fl

California faces significant challenges in managing its highly variable water resources, particularly as climate change and a growing population exacerbate drought and flood risks. The California Department of Water Resources (DWR) and other state agencies have been encouraging integrated approaches to water management, taking into account the connections between water supply, water quality, flood protection, and ecosystem health. The recent California Water Action Plan calls for improved coordination between local, state and federal agencies and tribal governments in order to develop multi-benefit water management strategies. Regional-scale planning has become a crucial avenue for advancing these efforts. Initiated in 2002, the Integrated Regional Water Management Planning (IRWM) process has led to the formation of 48 water planning regions statewide, in which diverse local agencies have developed integrated plans for managing all aspects of a region’s water management. More recently, a Regional Flood Management Planning (RFMP) process was created in the context of the Central Valley Flood Protection Plan to advance integrated approaches to reducing flood risks. Six flood planning regions, overlapping with nine IRWM regions, were formed in 2012. This study analyzes the origins and functioning of the IRWM and RFMP processes, and the degree of coordination between them to address flood risks in the Central Valley. In particular, it examines how each is working to generate multi-benefit strategies, and how they account for climate change. It also discusses opportunities for future coordination between the IRWM and RFMP processes, and DWR’s role in supporting this. This study is primarily based upon an analysis of publicly available documents related to the IRWM and RFMP processes. It is also informed by meeting observations and conversations with staff at DWR and the Central Valley Flood Protection Board, and participants in IRWM and RFMP processes. Since RFMPs were not yet completed at the time of this writing, this study’s findings are preliminary. Nonetheless, this report provides an indication of the overall functioning of these RFMP and IRWM regions, and some general considerations for DWR as it assesses next steps in supporting these programs.

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Reduced Moisture Transport Linked to Drought Propagation Across North America

Reduced resilience as an early warning signal of forest mortality

Reducing Methylmercury Accumulation in the Food Webs of San Francisco Bay and Its Local Watersheds

Reduction of Nitrates in Groundwater – Agricultural Expert Panel Report

Reference Guide to On-Farm Groundwater Recharge on Annual Cropland | Recommendations for Creating Waterbird Habitat Benefits

Refinement of Rice Water Consumptive Use During the Growing Season — Sacramento Valley

Refinement of Rice Water Consumptive Use During the Growing Season — Sacramento Valley Phase II — Cal-SIMETAW Model Study

Reforming Davis-Dolwig: Funding Recreation in the State Water Project

Reforming Watershed Restoration: Science in Need of Application and Applications in Need of Science (The H.T. Odum Synthesis Essay)

Regional Governance of Flood Management in the Central Valley

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