Now showing items 2481-2500 of 3360

    • Closed-Form Solution for Coastal Aquifer Management 

      H. A. Loáiciga; R. B. Leipnik (American Society of Civil Engineers, 2000)
      Ground-water management is posed as the maximization of the expected value of net revenue accruing from the sale of ground water, subject to hydrogeologic, climatic, and environmental conditions. The market price of ground ...
    • Nonlinear Optimization Model for Screening Multipurpose Reservoir Systems 

      Amit K. Sinha; B. Vasudeva Rao; Christian H. Bischof (American Society of Civil Engineers, 1999)
      An optimization model for selecting and sizing potential reservoir and hydropower plant sites on river basins is presented. The model improves on the work of Lall and Miller by replacing the modified sequent peak algorithm ...
    • Renewed Use of BOD/DO Models in Water Quality Management 

      Wu-Seng Lung; Robert G. Sobeck Jr (American Society of Civil Engineers, 1999)
      Immediately following the passage of the Clean Water Act over 25 years ago, there was a need to develop water quality management plans (WQMP) for each watershed. Assimilative capacities and wasteload allocations were ...
    • Hydrologic and Economic Uncertainties and Flood-Risk Project Design 

      Ahmed Al-Futaisi; Jery R. Stedinger (American Society of Civil Engineers, 1999)
      Hydrologic, hydraulic, and economic uncertainties impact the economic attractiveness of flood-risk management projects. In particular, uncertainty in the calculation of expected annual damages introduces uncertainty into ...
    • Use of Hydrologic Budget and Chemical Data for Ground-Water Assessment 

      Chansheng He (American Society of Civil Engineers, 1999)
      This paper uses a hydrologic budget method and partial chemical data to evaluate the availability of ground water for irrigation supply in a humid region through a case study of the Saginaw Bay basin, Mich. Concentrations ...
    • Transient Test-Based Technique for Leak Detection in Outfall Pipes 

      B. Brunone (American Society of Civil Engineers, 1999)
      A technique is proposed for leak detection and evaluation in outfall pipes based on properties of transient pressure waves. Transients are caused by an increase of the piezometric head at the initial section of the outfall ...
    • Fort Collins Flood 1997: Comprehensive View of an Extreme Event 

      Neil S. Grigg; Nolan J. Doesken; David M. Frick; Mike Grimm; Marsha Hilmes; Thomas B. McKee; Kevin A. Oltjenbruns (American Society of Civil Engineers, 1999)
      The July 1997 flood in Fort Collins was caused by the heaviest rains ever documented over an urbanized area in Colorado, and offers a data base and multifaceted set of lessons about flood planning, mitigation, response, ...
    • Storage Reservoir Behavior in the United States 

      Richard M. Vogel; Melissa Lane; Ranjith S. Ravindiran; Paul Kirshen (American Society of Civil Engineers, 1999)
      Numerous experiments are performed that characterize the behavior of individual storage reservoirs across the United States. Storage-yield curves based on annual and monthly flow records are compared to show that the ...
    • Application of ANN for Reservoir Inflow Prediction and Operation 

      S. K. Jain; A. Das; D. K. Srivastava (American Society of Civil Engineers, 1999)
      Artificial neural networks (ANNs) are new computing architectures in the area of artificial intelligence. The present study aims at the application of ANNs for reservoir inflow prediction and operation. The Upper Indravati ...
    • Yield Model for Screening Multipurpose Reservoir Systems 

      Amit K. Sinha; B. Vasudeva Rao; Upmanu Lall (American Society of Civil Engineers, 1999)
      A screening model for selecting and sizing potential reservoirs and hydroplants on a river basin is presented. The system is designed to meet annual irrigation and hydropower demands at prescribed levels of reliability. ...
    • Neural Networks Based Decision Support in Presence of Uncertainties 

      Bogdan Gabrys; Andrzej Bargiela (American Society of Civil Engineers, 1999)
      This paper addresses the problem of efficient and effective interpretation of water distribution network state estimates that are typically calculated on the basis of measurements and pseudomeasurements (consumption ...
    • Mixed-Integer Programming Model for Reservoir Performance Optimization 

      K. Srinivasan; T. R. Neelakantan; P. Shyam Narayan; C. Nagarajukumar (American Society of Civil Engineers, 1999)
      Failures in operation of water supply reservoir systems are often unavoidable during critical hydrologic periods. The failure characteristics of such systems can be represented by performance indicators such as reliability, ...
    • Detecting Accidental Contaminations in Municipal Water Networks 

      Arun Kumar; M. L. Kansal; Geeta Arora; Avi Ostfeld; Avner Kessler (American Society of Civil Engineers, 1999)
    • State-Space versus Multiple Regression for Forecasting Urban Water Demand 

      James Zhou; Kenneth A. Steele; Richard C. Pyle; Arun Kumar; Vijay K. Minocha; R. Bruce Billings; William C. Horrace; Donald E. Agthe (American Society of Civil Engineers, 1999)
    • Evaluating Data Worth for Ground-Water Management under Uncertainty 

      Brian J. Wagner (American Society of Civil Engineers, 1999)
      A decision framework is presented for assessing the value of ground-water sampling within the context of ground-water management under uncertainty. The framework couples two optimization models—a chance-constrained ...
    • Columbia River Streamflow Forecasting Based on ENSO and PDO Climate Signals 

      Alan F. Hamlet; Dennis P. Lettenmaier (American Society of Civil Engineers, 1999)
      A simple method has been devised to incorporate the El
    • Design of Object-Oriented Water Quality Software System 

      Boumediene Belkhouche; Irina Demtchouk; Laura J. Steinberg (American Society of Civil Engineers, 1999)
      Software models are important for the evaluation and management of environmental resources. This paper presents a framework for developing a software system for water quality analysis of river ecosystems. A major component ...
    • Editorial 

      Richard M. Vogel (American Society of Civil Engineers, 1999)
    • Watershed-Scale Water Quality Impacts of Riparian Forest Management 

      Calvin D. Perry; George Vellidis; Richard Lowrance; Daniel L. Thomas (American Society of Civil Engineers, 1999)
      The SPANS (SPatial ANalysis System) Geographic Information System (GIS) and the Georgia Landcover Database were used to identify land use within the 333 km
    • Flood Analysis and Mitigation for Petra Area in Jordan 

      Radwan A. Al-Weshah; Fouad El-Khoury (American Society of Civil Engineers, 1999)
      Petra is located in the southwest region of Jordan about 200 km south of Amman, between the Dead Sea and the Gulf of Aqaba. Petra was carved in sandstone canyons by the Nabatean over 2,000 years ago. Today the city is a ...