The Greater Los Angeles County Integrated Regional Water Management Plan

Los Angeles County Department of Public Works (LACDPW) | August 27th, 2014

 The purpose of the 2013 Integrated Regional Water Management (IRWM) Plan is to define a clear vision and direction for the sustainable management of water resources in

 The purpose of the 2013 Integrated Regional Water Management (IRWM) Plan is to define a clear vision and direction for the sustainable management of water resources in the Greater Los Angeles County (GLAC) Region for the next 20 years, to present the basic information regarding possible solutions and the costs and benefits of those solutions, and to inspire the Region and potential funding partners outside this Region. Moreover, it is to present sensible, economically feasible solutions that benefit communities. 

The Green Visions Plan for 21st Century Southern California: 21. Hydrology and Water Quality Modeling of the Calleguas Creek Watershed

University of Southern California (USC) | November 2nd, 2009

The hydrology and water quality simulation presented in this report is a part of the Green Visions Plan for 21st Century Southern California project. The primary

The hydrology and water quality simulation presented in this report is a part of the Green Visions Plan for 21st Century Southern California project. The primary focus of the Calleguas Creek Watershed water quality modeling is to determine the pollutant concentration and loads entering the stream network and to what degree surface waters are subject to water quality impairments.

The Ground-Water Flow System in Indian Wells Valley, Kern, Inyo, and San Bernardino Counties, California

U.S. Geological Survey (USGS) | April 11th, 1991

Ground water is virtually the sole source of water supplies in Indian Wells Valley. Demand for ground water has increased significantly for municipal and military uses si

Ground water is virtually the sole source of water supplies in Indian Wells Valley. Demand for ground water has increased significantly for municipal and military uses since 1945 and for agricultural uses since 1979. The study described in this report involved updating and evaluating the hydrologic data base compiled for the two-dimensional ground-water flow model previously developed for Indian Wells Valley and analyzing the three-dimensional aspects of the ground-water flow system.

The Hardest Working River in the West: Common-Sense Solutions for a Reliable Water Future for the Colorado River Basin

Western Resource Advocates | July 14th, 2014

The majestic Colorado River cuts a 1,450-mile path through the American West before drying up well short of its natural finish line at the Gulf of California. Reservoirs

The majestic Colorado River cuts a 1,450-mile path through the American West before drying up well short of its natural finish line at the Gulf of California. Reservoirs once filled to the brim from the river and its tributaries are at historic lows due to an unprecedented drought and growing human demands. Diminished stream flows now pose serious challenges for wildlife and recreation, as well as cities, farms, and others who rely upon the river. Steps currently being taken to improve the situation are not up to the task of bringing the river system back into balance and providing a reliable water supply for all the communities who depend upon the Colorado River. Fortunately, we have five feasible, affordable, common-sense solutions that can be implemented now to protect the flow of the river, ensure greater economic vitality, and secure water resources for millions of Americans.

The Innovation Deficit in Urban Water: The Need for an Integrated Perspective on Institutions, Organizations, and Technology

Environmental Engineering Science (Mary Ann Liebert, Inc.) | August 1st, 2013

Interaction between institutional change and technological change poses important constraints on transitions of urban water systems to a state that can meet fut

Interaction between institutional change and technological change poses important constraints on transitions of urban water systems to a state that can meet future needs. Research on urban water and other technology- dependent systems provides insights that are valuable to technology researchers interested in assuring that their efforts will have an impact. In the context of research on institutional change, innovation is the development, application, diffusion, and utilization of new knowledge and technology. This definition is intentionally inclusive: technological innovation will play a key role in reinvention of urban water systems, but is only part of what is necessary. Innovation usually depends on context, such that major changes to infrastructure include not only the technological inventions that drive greater efficiencies and physical transformations of water treatment and delivery systems, but also the political, cultural, social, and economic factors that hinder and enable such changes. On the basis of past and present changes in urban water systems, institutional innovation will be of similar importance to technological innovation in urban water reinvention. To solve current urban water infrastructure challenges, technology-focused researchers need to recognize the intertwined nature of technologies and institutions and the social systems that control change.

The Lower Colorado Basin Fiscal Years 2019 & 2020

U.S. Bureau of Reclamation (USBR) | January 4th, 2021

The Magnitude of California's Water Challenges

UnIversity of California, Davis (UC Davis) | June 4th, 2024

California will see increasing water scarcity from climate change, the end of overdrafting groundwater and the Colorado River’s massive reservoirs, increased water dedi

California will see increasing water scarcity from climate change, the end of overdrafting groundwater and the Colorado River’s massive reservoirs, increased water dedications for environmental flows, and other factors, such as salination of aquifers and land subsidence reducing canal capacities. Total reduction in average water availability in the coming decades will likely range from 4.6 to 9 million acre-feet per year. For context, this is equivalent to the water use of 1 – 2.8 million acres of irrigated agriculture or most urban water use in California. Perhaps 20-30% of this loss will likely be addressed by ongoing water conservation and supply improvements, being planned and implemented, leaving a 3 – 7.2 million acre-feet/year likely net average difference between statewide water demands and availability.

The Metropolitan Water District of Southern California History and First Annual Report for the Period Ending June 30, 1938

Metropolitan Water District of Southern California (MWD) | January 20th, 1939

The New Economy of Water: The Risks and Benefits of Globalization and Privatization of Fresh Water

Pacific Institute | February 1st, 2002

The New Economy of Water: The Risks and Benefits of Globalization and Privatization of Fresh Water is the most comprehensive examination of the issue of water privatiz

The New Economy of Water: The Risks and Benefits of Globalization and Privatization of Fresh Water is the most comprehensive examination of the issue of water privatization to date. The report looks at the dangers and benefits of water privatization, offers case studies from around the world, and sets forth principles designed to help guide privatization deals. “Our assessment shows that rigorous, independent review of water privatization efforts are necessary to protect the public,” said Dr. Peter H. Gleick, the report’s lead author. “Governments must establish clear guidelines that ensure fair access to water regardless of income, protect the environment, ensure transparency, and include affected parties in decision-making efforts. Water is far too important to human health and the health of our natural world to be placed entirely in the private sector.”

The paradox of irrigation efficiency

American Association for the Advancement of Science (AAAS) | August 24th, 2018

Reconciling higher freshwater demands with finite freshwater resources remains one of the great policy dilemmas. Given that crop irrigation constitutes 70% of global wate

Reconciling higher freshwater demands with finite freshwater resources remains one of the great policy dilemmas. Given that crop irrigation constitutes 70% of global water extractions, which contributes up to 40% of globally available calories (1), governments often support increases in irrigation efficiency (IE), promoting advanced technologies to improve the “crop per drop.” This provides private benefits to irrigators and is justified, in part, on the premise that increases in IE “save” water for reallocation to other sectors, including cities and the environment. Yet substantial scientific evidence (2) has long shown that increased IE rarely delivers the presumed public-good benefits of increased water availability. Decision-makers typically have not known or understood the importance of basin-scale water accounting or of the behavioral responses of irrigators to subsidies to increase IE. We show that to mitigate global water scarcity, increases in IE must be accompanied by robust water accounting and measurements, a cap on extractions, an assessment of uncertainties, the valuation of trade-offs, and a better understanding of the incentives and behavior of irrigators.