Eylon Shamir, Sharon B. Megdal, Carlos Carrillo, Christopher L. Castro, Hsin-I Chang, Karletta Chief, Frank E. Corkhill, Susanna Eden, Konstantine P. Georgakakos, Keith M. Nelson & Jacob Prietto
November 6, 2014
Episodic streamflow events in the Upper Santa Cruz River recharge a shallow alluvial aquifer that is an essential water resource for the surrounding communities. The complex natural variability of the rainfall-driven streamflow events introduces a water resources management challenge for the region. In this study, we assessed the impact of projected climate change on regional water resources management. We analyzed climate change projections of precipitation for the Upper Santa Cruz River from eight dynamically downscaled Global Circulation Models (GCMs).
The Using Watershed Assessments to Inform Planning for Rural Watersheds publication provides a process for developing a baseline watershed assessment. In this guide we provide recommendations for engaging with stakeholders to assess natural resource conditions, as well as basic information to collect to create a baseline assessment. Watershed planning is not a simple, quick process. This guide addresses just the first steps of building a watershed assessment– understanding the current conditions and issues facing your watershed.
The Colorado River Basin is just one example, albeit an extremely important one in the West, of a stressed river system. The Colorado River Basin Water Supply and Demand Study, released by the U.S. Bureau of Reclamation in late 2012, documents how growth, climate, economic development, and other factors point to an uncertain picture for communities, rural and urban alike. This policy brief highlights key questions communities should consider as they plan for their water futures.
This article provides the results of a study of four approaches to regional water collaboration in the West. Following up on a recommendation from water thought leaders from the Tucson, Arizona area to examine regional frameworks employed elsewhere, the University of Arizona Water Resources Research Center (WRRC) investigated the following four entities: the Southern Nevada Water Authority, the San Diego County Water Authority, the Santa Ana Watershed Project Authority, and Denver Water.
Arizona Environmental Water Needs (AzEWN) Methodology Guidebook: Determining the best methods or quantifying environmental flow needs depends on what is to be studied as well as how the information will be used. This guidebook will provide a description of the methodologies used in Arizona to define the environment’s need for water. Depending on the geographic context, the time and effort available, and whether the goal is restoration or maintenance of an ecosystem, some methods will be more appropriate for a given application than others.
During my fi rst-ever sabbatical this spring 2012, I traveled to four continents as part of my project on comparative policy analysis. I participated in the 6th World Water Forum in Marseille, shared lessons learned with Australian, Israeli and other water researchers and professionals, and heard views on good groundwater governance practices in Latin America and South America as a member of the team working with the Global Groundwater Governance Project (www.groundwatergovernance.org).
Arizona Environmental Water Needs Assessment (AzEWNA) Report: Considering environmental water needs alongside human demands is an emerging paradigm in water policy. The science of environmental water needs (or e‐flows) is ever growing and evolving. And yet, no compendium of efforts to define e‐flows in Arizona had been compiled,until now. This Assessment Report describes the geographic location and focus of nearly 100 studies of environmental water needs in Arizona, using all relevant sources.
A consumer's guide to water sources in Arizona, quality regulations, and home water treatment options, funded through the TRIF Water Sustainability Program grants program has been reprinted due to popular demand and is now available. This convenient spiral bound volume covers water use and water sources in Arizona, minerals and contaminants in water, water quality regulations and standards, and home water treatment options. Each option is fully described, including operation and maintenance tips.
Abstract: Installation of decentralized grey water treatment systems in small rural communities contributes to a more sustainable water supply. In order to gauge community attitudes about collection and use of grey water, a door-to-door survey in the farming community of Deir Alla, Jordan was conducted by Royal Scientific Society intervieAbstract: Installation of decentralized grey water treatment systems in small rural communities contributes to a more sustainable water supply.
This bulletin provides a concise introduction to the current knowledge about environmental water demands in the North/Northeastern Arizona Region. It outlines gaps in the understanding of environmental demands and illustrates how environmental demands can be considered in the context of other regional water demands. There are four bulletins in this series, Central Arizona, Southeastern Arizona, Colorado River and North/Northeastern Arizona.
This bulletin provides a concise introduction to the current knowledge about environmental water demands in the Southeastern Arizona Region. It outlines gaps in the understanding of environmental demands and illustrates how environmental demands can be considered in the context of other regional water demands. There are four bulletins in this series, Central Arizona, Southeastern Arizona, Colorado River and North/Northeastern Arizona.
This bulletin provides a concise introduction to the current knowledge about environmental water demands in the Colorado River Region. It outlines gaps in the understanding of environmental demands and illustrates how environmental demands can be considered in the context of other regional water demands. There are four bulletins in this series, Central Arizona, Southeastern Arizona, Colorado River and North/Northeastern Arizona.
This bulletin provides a concise introduction to the current knowledge about environmental water demands in the Central Arizona Region. It outlines gaps in the understanding of environmental demands and illustrates how environmental demands can be considered in the context of other regional water demands. There are four bulletins in this series, Central Arizona, Southeastern Arizona, Colorado River and North/Northeastern Arizona.
Robert G. Varady, Frank van Weert, Sharon B. Megdal, Andrea Gerlak, Christine Abdalla Iskandar & Lily House-Peters
Governance is an immense conceptual construct, encompassing a suite of precepts, principles, ideas, theories, contexts, objectives, and practices. The FAO/ GEF project “Groundwater Governance: A Global Framework for Country Action” is a comprehensive attempt to understand and articulate this notion in its entirety—as applied to the particular subject of groundwater.
Increasing demands on limited water resources have made wastewater recycling (reclamation or reuse) an attractive option for extending water supplies. Treatment technologies have evolved such that recycled water is of sufficient quality to satisfy most non-potable demands, and as such, recycled water has increasingly been used for municipal irrigation, toilet flushing, industrial cooling, and other applications. Many communities are currently engaging in discussions about the possibility of using recycled water to meet potable demands as well.
In 2009, Arizona Governor Jan Brewer announced the formation of the Blue Ribbon Panel on Water Sustainability (BRP) to focus on water conservation and recycling as strategies for improving water sustainability in Arizona.
Sustainable water management is a critical concern in the semi-arid portions of the American Southwest. This paper explains the decentralized approach to water supply management in this region, including the traditional roles of the public and private sectors. With Arizona as a focus, it explores how the water supply challenges of the twenty-first century require new approaches and partnerships for funding infrastructure, obtaining new water supplies, water banking, and water treatment.
The USA and Mexico have initiated comprehensive assessment of 4 of the 18 aquifers underlying their 3000 km border. Binational management of groundwater is not currently proposed. University and agency researchers plus USA and Mexican federal, state, and local agency staff have collaboratively identified key challenges facing the Santa Cruz River Valley Aquifer located between the states of Arizona and Sonora. The aquifer is subject to recharge variability, which is compounded by climate change, and is experiencing growing urban demand for groundwater.
The fourth edition of the World Water Development Report (WWDR4), ‘Managing Water under Uncertainty and Risk’ was recently launched at the 6th World Water Forum in Marseille by Irina Bokova, UNESCO Director General, and Michel Jarraud, UN-Water Chair. The WWDR4 is a comprehensive review of the world's freshwater resources and seeks to demonstrate, among other messages, that water underpins all aspects of development, and that a coordinated approach to managing and allocating water is critical.
This chapter develops the story of the Central Arizona Project as an example of the large-scale, long-distance water conveyance projects that have enabled growth and development to occur in the West far from sources of water. It examines the energy implication of the CAP as well as the implications of changes and constraints in the energy industry on CAP water supplies and costs. It looks also at broader policy questions raised by the interdependencies of water and energy as embodied in the CAP.
This article describes the WRRC’s Conserve to Enhance (C2E) Tucson pilot project from concept to implementation and preliminary results. C2E aims to connect conservation actions with water for the environment by developing mechanisms for funding water-related environmental enhancements. The Tucson pilot demonstrates the challenges and opportunities of making this concept a reality.
David K. Hubler, James C. Baygents, Christine Mackay, Sharon B. Megdal & James Farrell
High-volume semiconductor manufacturing (HVSM) with high demands for freshwater is often located in regions with limited water resources. This nexus of water demand and water scarcity has raised concerns among municipal governments, prompting several to consider water supply restrictions as they plan for economic growth and development. Using water use data and economic valuations of land use from Chandler, Ariz., this study compares the fiscal effect of HVSM with three alternative water uses: office, retail, and general manufacturing.