AuthorUniversity of Arizona. Water Resources Research Center.
McLain, Jean E.
Silvertooth, Jeffrey C.
KeywordsArid regions -- Research -- Arizona.
Water resources development -- Research -- Arizona.
Water resources development -- Arizona.
Water-supply -- Arizona.
MetadataShow full item record
PublisherWater Resources Research Center, College of Agriculture, University of Arizona (Tucson, AZ)
AbstractIn January 2014, Arizona will begin its first farmland fallowing and forbearance project. Unlike similar fallowing programs in the West, this project does not transfer the water conserved in the agricultural sector to the municipal sector. For the time being, this program seeks to conserve water in the Colorado River system. The saved water will be maintained in Lake Mead, increasing its dwindling levels and helping forestall shortages to water users in the Lower Colorado River Basin. Since 2000, water levels in Lake Mead have fallen by an alarming 100 feet. If the lake’s elevation falls by another 30 feet, users in the lower basin would face reductions in water allocations.
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Water Service Organizations in Arizona: A Report to the Arizona Water Commission and the Central Arizona Water Conservation DistrictWater Resources Research Center, University of Arizona; DeCook, K. James; Emel, Jacque L.; Mack, Stephen F.; Bradley, Michael D.; Water Resources Research Center (Water Resources Research Center, University of Arizona (Tucson, AZ), 1978-08)
Yield and Water Use of Barley Cultivars Compared Under an Irrigation Water Gradient at Marana, 1987Ottman, Mike; Ramage, Tom; Brown, Paul; Thacker, Gary; Ottman, Mike (College of Agriculture, University of Arizona (Tucson, AZ), 1987-09)This study was initiated to determine how barley cultivars perform outside the environment for which they were selected. Also, a comparison was made of water use by a one-irrigation barley with water use of a commercial cultivar selected for high yield conditions. Six barley cultivars bred for differing growing conditions (Westbred Gustoe and Westbred Barcott - high input; Arivat and Prato - medium input; and, Seco and 2-22-9 - low input) were compared under 12 water regimes delivered by a line -source sprinkler system. Water use of Seco, a one-irrigation barley, and Westbred Gustoe, a commercial barley, was monitored with a neutron probe. The barley cultivars bred for high, medium, and low input conditions performed best in their respective optimum water levels with the exceptions of Westbred Barcott and Prato. Westbred Barcott (high input) yielded relatively well over all water levels, and Prato (medium input), performed similar to a high input barley. Seco (low input) used slightly less water than Westbred Gustoe (high input), primarily due to its earlier maturity. The water extraction pattern with depth was similar for both cultivars due to the frequent shallow irrigations applied in this study. The water extraction pattern of Seco needs to be investigated under one- irrigation conditions.
The Arizona Water Commission's Central Arizona Project Water Allocation Model SystemBriggs, Philip C.; Arizona Water Commission, Phoenix, Arizona (Arizona-Nevada Academy of Science, 1977-04-16)The purpose and operation of the Central Arizona Project water allocation model system are described, based on a system analysis approach developed over the past 30 years into an interdisciplinary science for the study and resolution of complex technical management problems. The system utilizes mathematical and other simulation models designed for computer operations to effectively solve such problems as the CAP faces including those concerned with social and economic considerations. The model is composed of two major components: (1) a linear program designed to determine the optimal allocation of all sources of water to all demands and, (2) a hydrologic simulator capable of reflecting the impact of distribution alternatives on per-unit cost of delivery. The model, currently being use, has substantially contributed to a greater understanding of water usage potential in Arizona.