Hydrology and Water Resources in Arizona and the Southwest, Volume 05 (1975): Recent submissions

Now showing items 21-27 of 27

    • Watershed Indicators of Landform Development
      Heede, Burchard H.; Arizona State University, Tempe, Arizona; Colorado State University, Fort Collins (Arizona-Nevada Academy of Science, 1975-04-12)
      Traditionally, watershed management is concerned with water and sediment yield, vegetation, soils, and meteorology, but not with geomorphology. Often it is in this field that the explanation can be found for the formation and present condition of a watershed and its future development. Examples are presented to demonstrate that factors in the hydraulic geometry of streams indicate whether a watershed is in an active stage of landform development, or is in dynamic equilibrium. Some general guides for the practitioner are provided. Watershed management research cannot afford to ignore the basic geomorphic setting of watersheds. If geomorphology is not considered, the researcher's results could be misinterpreted.

    • Antritranspirants as a Possible Alternative to the Eradication of Saltcedar Thickets
      Cunningham, Robert S.; Brooks, Kenneth N.; Thorud, David B.; School of Renewable Natural Resources, University of Arizona, Tucson, Arizona (Arizona-Nevada Academy of Science, 1975-04-12)
      The response of saltcedar (Tamarix pentandra Pall.) to several antitranspirants was evaluated in laboratory, greenhouse and small -scale field studies using potted plants. Anti - transpirants may provide a treatment alternative to the eradication of saltcedar thickets for water salvage objectives. Transpiration rates were reduced by 23 to 44 percent for 7 to 20 days in the greenhouse, and by 18 to 32 percent for 2 to 8 days in the field. No serious damage to the plants was apparent. One of the most effective antitranspirants considered for a hypothetical saltcedar thicket and a hypothetical operational treatment program, based on estimated cost data, would result in reallocated water costing approximately 55 dollars per acre foot for a single treatment. About 19 acres of saltcedar thicket would have to be treated to provide one acre -foot of reallocated water in this case.

    • Parameter Influence on Runoff Modeling
      Kao, Samual E.; Roefs, Theodore G.; Ince, Simon; Ferguson, Morris & Associates, Inc., Scottsdale; Department of Hydrology & Water Resources, University of Arizona, Tucson (Arizona-Nevada Academy of Science, 1975-04-12)
      The influence of some model parameters on runoff simulation was investigated. The model parameters considered included space and time increments, rainfall input, and channel roughness. The parameters' effect on runoff appeared to be very small, but channel roughness greatly influenced flow depth.

    • The Geomorphic and Hydraulic Response of Rivers
      Simons, D. B.; College of Engineering, Colorado State University, Fort Collins, Colorado 80523 (Arizona-Nevada Academy of Science, 1975-04-12)
      The importance of water resources and an increasing interest on improvement of out environment have identified the urgent need for methods to predict river response due to various changes resulting from proposed water resource planning. Fluvial geomorphology and hydraulic elements that are related to the interpretation and modeling of response to the problem are presented. Interpretation of alluvial rivers should be preceded by a qualitative analysis and information is presented which should be adequate to carry this out in most cases. This should be followed by a quantitative evaluation of channel response and water sediment routing using theory supplemented by physical and mathematical model studies of the system.

    • Economic Adjustment to a New Irrigation Water Source: Pinal County, Arizona and the Central Arizona Project
      Boster, Mark A.; Martin, William E.; Department of Agricultural Economics, University of Arizona, Tucson, Arizona (Arizona-Nevada Academy of Science, 1975-04-12)
      Pinal County is one of Arizona's largest farm and highest farm income areas. Agriculture there is completely dependent upon irrigation systems, with nearly all of the water supply pumped from underlying groundwater reservoirs. Delivery of central Arizona project water will not assure groundwater conservation at a one to one trade-off ratio. Most of the monetary benefits to agriculture derived from the project will be realized by Indian farmers. Cotton acreage will not be affected, but the acreage of small grains and alfalfa will increase. The increasing salinity of cap water should be of no concern to Pinal County farmers.

    • The Arizona Water Resources Information System - 1975
      Winikka, Carl C.; Arizona Resources Information System, Department of Revenue, Phoenix, Arizona (Arizona-Nevada Academy of Science, 1975-04-12)
      The Arizona resources information system is designed to serve on going needs of the people of Arizona through state, federal and local agencies. The various land and water environmental organizations use the resource system for their research. The aris has prepared Arizona orthopotoquads, developed early land use classification systems, and evaluated electronic data processing graphical and analytical systems and many information systems.

    • State Water Planning
      Steiner, Wesley E.; Arizona Water Commission, Phoenix, Arizona (Arizona-Nevada Academy of Science, 1975-04-12)
      From the establishment of the Arizona resources board in 1928 until the Arizona Water Commission was formed in 1971, no state water plan was developed. Since 1971, the longest and most intensive planning studies have been concerned with allocation of Colorado River water through the central Arizona project. Future plans involve desalting sea water, weather modification, importation of water, etc. The Arizona state water plan ultimately will be a plan of management of Arizona's limited water resources. Water plans and economic and environmental impact evaluations are scheduled for completion by july, 1977.