Journal of Water Resources Planning and Management: Recent submissions
Now showing items 1981-2000 of 3360
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Water Quality Model Calibration under Unknown Demands
(American Society of Civil Engineers, 2008)It has often been cited that a water distribution system (WDS) hydraulic model needs to be highly accurate before it may be used in combination with a water quality model (WQM) to simulate the dispersion and decay of a ... -
State Estimation in Water Distribution Networks Using Graph-Theoretic Reduction Strategy
(American Society of Civil Engineers, 2008)Steady state analysis of flows and pressures in a water distribution network is a major concern for hydraulic engineers involved in the monitoring and control of water distribution systems. Most of the hydraulic network ... -
Mixing at Cross Junctions in Water Distribution Systems. II: Experimental Study
(American Society of Civil Engineers, 2008)The present experimental study focuses on the characterization of complex mixing phenomena at pipe intersections within pressurized water distribution networks. To examine the complete mixing assumption at a cross junction, ... -
Water Distribution System Aggregation for Water Quality Analysis
(American Society of Civil Engineers, 2008)Control and design problems of water distribution systems rely on simulation models for predicting the system behavior under dynamic boundary conditions. A detailed network model may result in thousands to tens of thousands ... -
Improved Self-Adaptive Chaotic Genetic Algorithm for Hydrogeneration Scheduling
(American Society of Civil Engineers, 2008)The short-term optimal hydrogeneration planning is a complicated nonlinear constrained optimization problem with water delay time. To overcome the shortcomings of a standard genetic algorithm, this paper proposes a new ... -
How to Include Economic Analysis in TMDL Allocation
(American Society of Civil Engineers, 2008)The total maximum daily load approach currently used by the USEPA to restore an impaired stream by allocating allowable loads to the polluters does not mandate any economic consideration. The need for a cost-effective ... -
Estimating the Impacts and Uncertainty of Climate Change on a Municipal Water Supply System
(American Society of Civil Engineers, 2008)The preponderance of evidence in the scientific community supports the premise that global climate is changing. The precise impacts of climate change on natural and man-made systems remain less certain. Municipal water ... -
Planning and Operation of Large-Scale Water Distribution Systems with Preemptive Priorities
(American Society of Civil Engineers, 2008)This paper describes the development of an optimization model for the management and operation of a large-scale, multireservoir water supply distribution system with preemptive priorities. The model considers multiobjectives ... -
Spatial and Temporal Scaling Properties of Water Demand
(American Society of Civil Engineers, 2008)The stochastic modeling of water demand requires knowledge of the statistical features of the demand time series at different spatial and temporal aggregations. The observation of real data has revealed the presence of a ... -
Optimal Design of Gravity-Fed Looped Water Distribution Networks Considering the Resilience Index
(American Society of Civil Engineers, 2008)The optimization of looped water distribution networks (WDN) implies achieving the best tradeoff between reliability and cost. Many works have dealt with minimizing the cost, but few have considered both cost and reliability. ... -
Coping with Global Warming and Climate Change
(American Society of Civil Engineers, 2008) -
Use of Multiobjective Particle Swarm Optimization in Water Resources Management
(American Society of Civil Engineers, 2008)Water resources management presents a large variety of multiobjective problems that require powerful optimization tools in order to fully characterize the existing trade-offs. Different optimization methods, based on ... -
Extended OWA Operator for Group Decision Making on Water Resources Projects
(American Society of Civil Engineers, 2008)Six water authorities share the Sefidrud watershed in the northwestern region of Iran and resolving the conflict among them is one of the major challenges of the water division of the government. In this paper a group ... -
Risk and Resilience to Enhance Sustainability with Application to Urban Water Systems
(American Society of Civil Engineers, 2008)Many cities in water-stressed environments are seeking sustainable alternatives to traditional solutions such as supply augmentation and water restrictions. One alternative is to upgrade urban water systems in an integrated ... -
Hydrologic and Economic Implications of Climate Change for Typical River Basins of the Agricultural Midwestern United States
(American Society of Civil Engineers, 2008)The Midwest is the largest agricultural area of the United States. Historically, the climate there has been suitable for unirrigated farming. However, the specter of climate change has created concerns about the future of ... -
Mixing at Cross Junctions in Water Distribution Systems. I: Numerical Study
(American Society of Civil Engineers, 2008)The present study investigates solute mixing phenomena at various flow rates within a cross junction, which is commonly found in municipal drinking water distribution systems. Simulations using computational fluid dynamics ... -
Urban Water Demand Forecasting with a Dynamic Artificial Neural Network Model
(American Society of Civil Engineers, 2008)This paper presents the development of a dynamic artificial neural network model (DAN2) for comprehensive urban water demand forecasting. Accurate short-, medium-, and long-term demand forecasting provides water distribution ... -
Groundwater Management Using Model Reduction via Empirical Orthogonal Functions
(American Society of Civil Engineers, 2008)This work presents a novel approach for solving groundwater management problems with reduced computational effort. We replace a groundwater flow model governed by a partial differential equation with a simple model governed ... -
Sensor Placement and Optimization Criteria Dependencies in a Water Distribution System
(American Society of Civil Engineers, 2008)A water distribution system was analyzed for optimal sensor placement based on different intrusion scenarios and optimization criteria. The spatial distributions of the selected sensor networks were analyzed and compared ... -
Using Bayesian Statistics to Estimate Chlorine Wall Decay Coefficients for Water Supply System
(American Society of Civil Engineers, 2008)A model of pipe wall and hydraulic profile effects on free chlorine decay in a water distribution system is developed using a two-step parameter assignment method. The model employs a Bayesian statistical method and Monte ...