a1 Arizona State University
Kelli L. Larson is an Assistant Professor in the Schools of Geographical Sciences and Sustainability at Arizona State University with interests in water-resource geography, environmental policy and management, and human dimensions of sustainability.
Annie Gustafson is a recent graduate of the Master's program in the Department of History at Arizona State University, where she specialized in urban environmental history and water policy.
Paul Hirt is an Associate Professor in the Department of History and the School of Sustainability at Arizona State University specializing in the environmental history of the American West.
Thanks to Barbara Trapido-Lurie and Lilah Zautner for their assistance with graphics and to the Journal of Environmental History for permission to reprint figure 1. This material is based upon work supported by the National Science Foundation under Grant Nos. SES-0345945 Decision Center for a Desert City (DCDC); DEB-0423704 Central Arizona—Phoenix Long-Term Ecological Research (CAP LTER); and DEG-9987612 Integrative Graduate Education and Research Training (IGERT) in Urban Ecology. Any opinions, findings, and conclusions expressed in this article are those of the authors and do not necessarily reflect the views of the National Science Foundation (NSF).