Now showing items 3061-3080 of 3360

    • Implicit Network Calibration 

      Lindell E. Ormsbee (American Society of Civil Engineers, 1989)
      An implicit mathematical model is developed for use in calibrating hydraulic network models. The calibration model uses a nonlinear optimization algorithm along with a general network solver to adjust selected model ...
    • Expert System for Calibrating Swmm 

      C. Baffaut; J. W. Delleur (American Society of Civil Engineers, 1989)
      EPA'S Storm Water Management Model (SWMM) simulates all aspects of the hydrologic and quality cycles. Using expert system technology, an interactive user‐support framework has been developed to automate the calibration of ...
    • Risk Assessment of Extreme Events: Application 

      Per‐Ola Karlsson; Yacov Y. Haimes (American Society of Civil Engineers, 1989)
      The safety of many existing dams could be improved by modifying hem structurally in accordance with recent advances in statistical hydrology and mproved availability of meteorological and hydrological data. Any increase ...
    • Estimating Terminal Lake Level Frequencies 

      Lawrence H. Woodbury; G. Padmanabhan (American Society of Civil Engineers, 1989)
      A reliable method of predicting long‐term future lake levels with associate exceedance frequencies is essential to establish planning elevations in the lakeshore environment. A methodology is proposed here to develop ...
    • Addendum to List of Reviewers of the <i>Journal of Water Resources Planning and Management</i> 

      Carlos E. Puente (American Society of Civil Engineers, 1989)
    • Potential of Irrigated Agriculture in Syria 

      Adel F. Bichara (American Society of Civil Engineers, 1989)
      In the long term Syria has a high potential for development of irrigated agriculture. To define this potential, the available water and land resources are assessed. The total area of Syria is about 18.5×106 ha, of which ...
    • Optimum Diversion Plan for Hydropower Scheme 

      Tawatchai Tingsanchali; Carlos C. Carriaga (American Society of Civil Engineers, 1989)
      An overall study has been made to develop an optimum water resources utilization plan in the Cho Shui River Basin in Taiwan, the Republic of China (ROC). This paper represents a part of this overall study. It focuses on ...
    • Water Supply Yield Analysis for Washington Metropolitan Area 

      James A. Smith (American Society of Civil Engineers, 1989)
      The Washington D.C. Metropolitan Area (WMA) has experienced rapid population growth in the 1980s. Water supply yield analysis techniques are developed in this paper to assess adequacy of the current WMA water supply system ...
    • Subsurface Water in River Beds as Source of Rural Water Supply Schemes 

      S. P. Rajagopalan; N. B. Narasimha Prasad (American Society of Civil Engineers, 1989)
      This paper describes the assessment of subsurface water in the river bed of Bharathapuzha at a location near Thrithala in Palghat District of Kerala State, India for a rural water supply scheme which is to service a rural ...
    • Pressure and Flow Uncertainty in Water Systems 

      Andrzej Bargiela; Graham D. Hainsworth (American Society of Civil Engineers, 1989)
      In the monitoring of water distribution systems, the inaccuracy of input data contributes greatly to the inaccuracy of system state estimates calculated from them. It is important, therefore, that the system operators are ...
    • Storm Water Detention Basin Nutrient Removal Efficiency 

      JeffreyDee (American Society of Civil Engineers, 1989)
      Water quality studies were conducted at Springhill subdivision in suburban Lake Worth, Florida, for the purpose of assessing the nutrient removal efficiency of a combination grassed swale/wet detention storm water management ...
    • Network Flow Algorithm Applied to California Aqueduct Simulation 

      Francis I. Chung; Michael C. Archer; Johannes J. DeVries (American Society of Civil Engineers, 1989)
      The California Department of Water Resources has developed a water resources planning model (DWRSIM) to simulate the combined operation of the California State Water Project (SWP) and the Federal Central Valley Project ...
    • Capacity Expansion Model for Hydrothermal Power Systems 

      Junji Matsumoto; Friedrich E. Fahlbusch; Price E. Stiffler (American Society of Civil Engineers, 1989)
      This paper describes a computer model that can be used to analyze long‐term capacity expansion strategies for power generation systems consisting of hydrothermal plants and transmission networks. The objective is to determine ...
    • Water Requirements versus Water Availability in Saudi Arabia 

      Omar S. Abu Rizaiza; Mohamed N. Allam (American Society of Civil Engineers, 1989)
      Water demand in the Kingdom of Saudi Arabia has increased from 1,750 million cubic meters (
    • Developing a Data Base for Use in Groundwater Management 

      Mark Maimone (American Society of Civil Engineers, 1989)
      Nassau County, New York, has developed a computerized data‐handling system to support a ground water management program. This case history describes the design process used for the data system, as well as the place and ...
    • Expected Annual Damages and Uncertainties in Flood Frequency Estimation 

      Nigel W. Arnell (American Society of Civil Engineers, 1989)
      The expected annual damge is the most frequently used index of the impact of flooding at a site. However, estimates of expected annual damages are very uncertain as a result of uncertainties in both the estimation of the ...
    • Methodology for Improving Pump Operation Efficiency 

      Lindell E. Ormsbee; Thomas M. Walski; Donald V. Chase; Wayne W. Sharp (American Society of Civil Engineers, 1989)
      A methodology to optimize the operation of water supply pumps is developed for use in minimizing pump operation costs. The developed methodology is directly applicable to complete water distribution systems or isolated ...
    • New Federalism and Social and Environmental Goals 

      David H. Moreau (American Society of Civil Engineers, 1989)
      The basic shift in intergovernmental relationships that has occurred since 1975 has important implications for the achievement of social and environmental goals that guide the management of water resources. These changes, ...
    • Impact Evaluation Procedures: Theory, Practice, and Needs 

      Benjamin F. Hobbs; Eugene Z. Stakhiv; Walter M. Grayman (American Society of Civil Engineers, 1989)
      Over the past 50 years, planning procedures and analytical methods for evaluating social and environmental effects have played an increasingly important role in federal water planning. Yet the impact of these procedures ...