Now showing items 2981-3000 of 3360

    • Optimization of Freshwater Inflow to Estuaries 

      Yeou‐Koung Tung; Yixing Bao; Larry W. Mays; George Ward (American Society of Civil Engineers, 1990)
      This paper presents a methodology that can be used for determining the optimal freshwater inflows into bays and estuaries for the purpose of balancing freshwater demands with the harvest of various types of estuarine ...
    • Design of Detention Basins for Industrial Sites 

      Dale D. Meredith; Andrew C. Middleton; John R. Smith (American Society of Civil Engineers, 1990)
      A procedure is presented for design of detention basins for industrial sites. The procedure involves simulating the operation of the detention basin for the entire period of rainfall record in order to determine the storm ...
    • Ground‐Water‐Management Areas in United States 

      Jean A. Bowman (American Society of Civil Engineers, 1990)
      Laws governing ground‐water withdrawals have been adjusted to reflect the desire and need to prevent resource depletion and conflict among users. Courts today are inclined to regard ground water more as a shared public ...
    • Demand‐Based Benefit‐Cost Model of Participation in Water Project 

      R. Bruce Billings (American Society of Civil Engineers, 1990)
      The concept of consumer surplus is used to estimate the benefits from a new water source for urban water customers. This benefits model is estimated for the projected arrival of Central Arizona Project (CAP) water in Tucson, ...
    • Prioritizing Flow Alternatives for Social Objectives 

      Marshall Flug; Javed Ahmed (American Society of Civil Engineers, 1990)
      Most mathematical modeling efforts in water resources fall far short of adequately including social and environmental objectives. Although many modelers have good intentions at the start of their analyses, the objective ...
    • Principles of a Ground‐Water Strategy 

      William Whipple, Jr.; Daniel J. Van Abs (American Society of Civil Engineers, 1990)
      A ground‐water strategy is a policy document that outlines how a state can best manage its ground water, consistent with budgetary limitations and with provisions of federal and state law. This paper outlines such a strategy, ...
    • Modeling to Generate Recreational Alternatives 

      Marshall Flug; D. G. Fontane; G. A. Ghoneim (American Society of Civil Engineers, 1990)
      Water‐resource managers are often faced with rife task of balancing recreational activities in an attempt to maximize the overall recreational benefits from a river system. Available recreation‐use functions for white‐water ...
    • Two‐Stage Ground‐Water Remediation Design 

      David Ahlfeld (American Society of Civil Engineers, 1990)
      Although available technology may be inadequate for the complete remediation of certain contaminated ground water‐sites, hydraulic control can be used to reduce the extent of, and contain, ground‐water contaminants until ...
    • Optimal Artificial Recharge in Intermittent Multibasin System 

      Kaveh Zomorodi (American Society of Civil Engineers, 1990)
      Among the various factors that reduce the rate of recharge in an artificial recharge basin with time, the settling of the suspended sediments in the recharge water is usually the most important. An equation is developed ...
    • Regional Flow‐Duration Curves for Ungauged Sites in Massachusetts 

      Neil Fennessey; Richard M. Vogel (American Society of Civil Engineers, 1990)
      A regional hydrologic model is developed for estimating flow‐duration curves at ungauged and unregulated basins in Massachusetts. Flow‐duration curves often exhibit complex shapes, requiring probability density functions ...
    • Methods for Distinguishing between Single and Multiple Discharger Situations 

      J. Wayland Eheart (American Society of Civil Engineers, 1990)
      Designing programs to control pollutant discharges into streams is easier if the areas of water quality degradation from adjacent discharges do not overlap, so that each discharge may be treated as a single entity. ...
    • Optimal Planning and Operation of Multiaquifer System 

      Hasan Yazicigil (American Society of Civil Engineers, 1990)
      Three ground‐water management models were developed to determine the optimal planning and operating policies of a multiaquifer system in eastern Saudi Arabia for an eight‐year planning period. The modeled system, which ...
    • Optimal Valve Control in Water‐Distribution Networks 

      Paul W. Jowitt; Chengchao Xu (American Society of Civil Engineers, 1990)
      The paper concerns the problem of minimization or leakage in water‐distributed networks. It has been reported that leakage from some networks may account for a significant amount of the water put into supply. For some aging ...
    • Risk of Debris‐Basin Failure 

      Richard H. McCuen; Bilal M. Ayyub; Theodore V. Hromadka (American Society of Civil Engineers, 1990)
      Debris basins are a common engineering structure used to control debris flows. Knowledge of the risk of failure as a function of important design variables can improve decision making and can be used as a basis for minimizing ...
    • Multistage Screening Process for River Basin Planning 

      Daryoush Razavian; Ann S. Bleed; Raymond J. Supalla; Noel R. Gollehon (American Society of Civil Engineers, 1990)
      Simulation, screening, and optimization procedures are developed and used conjunctively to analyze multipurpose water development opportunities for a complex river system. The general model is capable of generating an ...
    • Real‐Time Operation of Tanshui River Reservoirs 

      Jan‐Tai Kuo; Nien‐Sheng Hsu; Wen‐sen Chu; Shian Wan; Youn‐Jan Lin (American Society of Civil Engineers, 1990)
      This paper reports the development and application of a modeling package for the real‐time operation of Feitsui and Shihmen Reservoirs in the Tanshui River Basin, Taiwan, the Republic of China. The modeling package consists ...
    • Water Use in Saudi Arabia: Problems and Policy Implications 

      Abdulla Ali Al‐Ibrahim (American Society of Civil Engineers, 1990)
      Saudi Arabia is an arid country with the potenial for acute water shortage. The demand for water has grown substantially against a scarce and dwindling water supply. This growing imbalance has been met mainly by increasing ...
    • Analyzing Water Main Replacement Policies 

      James W. Male; Thomas M. Walski; Adam H. Slutsky (American Society of Civil Engineers, 1990)
      This paper presents the results of the application of a procedure to assist in planning for the rehabilitation of a water distribution system. The procedure is applied to New York City and incorporates the costs of replacing ...
    • Practical Determination of Hypothetical Floods 

      Leo R. Beard (American Society of Civil Engineers, 1990)
      A comprehensive procedure for simultaneously relating storm rainfalls of a range of frequencies to runoff hydrographs of the same frequencies is suggested. Hypothetical storm rainfall is developed from published rainfall ...