Developed by the Bureau of Reclamation's Upper Colorado and Lower Colorado Regions, in collaboration with the Boulder City Field Solicitor, this is the latest of four books published by the Bureau of Reclamation to address the management of the Colorado River since the early 1900s. It summarizes 30 years of updates to the "Law of the Colorado River," a compilation of compacts, federal laws, court decisions and decrees, contracts, and regulatory guidelines that have been implemented over nearly a century to guide the management and operation of the Colorado River. It details the statutes, policies, agreements, and court decisions related to river operations, environmental matters, Mexican treaty deliveries, water development, water entitlement actions, Native American water settlements, proceedings in Arizona v. California, and power generation and distribution issues. All four books are available on the DVD.

In the arid American West, settlement was generally contingent on the availability of water to irrigate crops and maintain livestock and human residents. Early irrigation projects were usually the cooperative efforts of pioneer farmers, but by the early twentieth century they largely reflected federal intentions to create new farms out of the western public domain. The Yuma Reclamation Project, authorized in 1904, was one of the earliest federal irrigation projects initiated in the western United States and the first authorized on the Colorado River. Its story exemplifies the range of difficulties associated with settling the nation’s final frontier—the remaining irrigable lands in the arid West, including Indian lands—and illuminates some of the current issues and conflicts concerning the Colorado River. Author Robert Sauder’s detailed, meticulously researched examination of the Yuma Project illustrates the complex multiplicity of problems and challenges associated with the federal government’s attempt to facilitate homesteading in the arid West. He examines the history of settlement along the lower Colorado River from earliest times, including the farming of the local Quechan people and the impact of Spanish colonization, and he reviews the engineering problems that had to be resolved before an industrial irrigation scheme could be accomplished. The study also sheds light on myriad unanticipated environmental, economic, and social challenges that the government had to confront in bringing arid lands under irrigation, including the impact on the Native American population of the region.The Yuma Reclamation Project is an original and significant contribution to our understanding of federal reclamation endeavors in the West. It provides new and fascinating information about the history of the Yuma Valley and, as a case study of irrigation policy, it offers compelling insights into the history and consequences of water manipulation in the arid West.

Discusses the history of the U.S. Bureau of Reclamation's operation and management of the Colorado River on behalf of the Secretary of the Interior from 1979 through 2008. Details the political, legal, institutional, and other instruments developed to address pressing issues faced by Colorado River Basin water users and managers. Reflective of its era, the 2008 volume has an increased focus on coordinated operations of the river in both the Upper and Lower Basins, on environmental matters, on the relationship with Mexico, and on Native American water settlements.

Recent studies of past climate and streamflow conditions have broadened understanding of long-term water availability in the Colorado River, revealing many periods when streamflow was lower than at any time in the past 100 years of recorded flows. That information, along with two important trends-a rapid increase in urban populations in the West and significant climate warming in the region-will require that water managers prepare for possible reductions in water supplies that cannot be fully averted through traditional means. Colorado River Basin Water Management assesses existing scientific information, including temperature and streamflow records, tree-ring based reconstructions, and climate model projections, and how it relates to Colorado River water supplies and demands, water management, and drought preparedness. The book concludes that successful adjustments to new conditions will entail strong and sustained cooperation among the seven Colorado River basin states and recommends conducting a comprehensive basinwide study of urban water practices that can be used to help improve planning for future droughts and water shortages.