Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 1721-1740 of 3826
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Optimization of Watershed Control Strategies for Reservoir Eutrophication Management
(American Society of Civil Engineers, 2010)A vital key to the development of a reservoir eutrophication management strategy is to link the watershed-nutrient model to the model of reservoir water quality. To develop a cost-effective optimization model, a coupled ... -
External Iterative Coupling Strategy for Surface-Subsurface Flow Calculations in Surface Irrigation
(American Society of Civil Engineers, 2010)Coupling the unsteady open-channel flow equations of surface irrigation with the equation of variably saturated porous media flow is a computationally complex problem because of the dependence of infiltration on surface-flow ... -
Short-Duration Rainfall Intensity Equations for Urban Drainage Design
(American Society of Civil Engineers, 2010)A practical method for developing rainfall-intensity equations for short durations (approximately one hour or less) for locations in the United States covered by NOAA Atlas 14 Volumes 1, 2, 3, and 4 is presented. For the ... -
Performance of Penman-Monteith FAO56 in a Semiarid Highland Environment
(American Society of Civil Engineers, 2010)Reliable estimates of evapotranspiration are essential for irrigation and water resources planning and management. Although several methods are available for computing reference evapotranspiration -
Nonintrusive Method for Detecting Particle Movement Characteristics near Threshold Flow Conditions
(American Society of Civil Engineers, 2010)Bed-load measurements comprise an important component in the development of reliable formulas, in an effort to obtain the necessary constitutive relations between the amount of transported material and flow parameters. The ... -
Method of Superimposition for Suction Force on Trash Rack
(American Society of Civil Engineers, 2010)As recommended, culvert entrances in urban areas should be protected with a rack or a grate because urban flood flows are quick, concentrated, and fast. Safety around storm-water facilities is an increasing concern for the ... -
Explanation for Anomalous Readings during Monitoring of a Best Management Practice
(American Society of Civil Engineers, 2010)The USEPA’s Urban Watershed Management Branch (UWMB) has monitored storm-water drainage and best management practices (BMPs) as part of its overall research program. As part of this effort, continuous monitoring equipment ... -
Iterative Formulas and Estimation Formulas for Computing Normal Depth of Horseshoe Cross-Section Tunnel
(American Society of Civil Engineers, 2010)This note presents iterative formulas that can be used to calculate the normal depth for all types of horseshoe cross sections. Based on the principle of gradual optimization fitting, general estimation formulas were ... -
Unsteady Solution for Well Recharge in a Low Diffusive Aquifer
(American Society of Civil Engineers, 2010)Finite aquifer solution exists for the constant head in a fully penetrating well. Their use for well recharge is limited, as they do not permit simultaneous computation of unsteady wellhead pressure and variable recharge ... -
Closed-Form Expression of the Response Time of an Open Channel
(American Society of Civil Engineers, 2010)Computing accurately the response time of an open channel is of extreme importance for management operations on canal networks, such as feed-forward control problems. The methods proposed in the literature to approximate ... -
Regional Estimation of Reference Evapotranspiration in Arid and Semiarid Regions
(American Society of Civil Engineers, 2010)Evapotranspiration is critical to many applications including water resource management, irrigation scheduling, and environmental studies. Many models based on meteorological data have already been developed to estimate ... -
Discussion of “Soil Moisture Measurements: Comparison of Instrumentation Performances” by Ventura Francesca, Facini Osvaldo, Piana Stefano, and Rossi Pisa Paola
(American Society of Civil Engineers, 2011) -
Closure to “Improved Channel Cross Section with Two-Segment Parabolic Sides and Horizontal Bottom” by Said M. Easa
(American Society of Civil Engineers, 2010) -
Phosphorus Retention by Bioretention Mesocosms Using Media Formulated for Phosphorus Sorption: Response to Accelerated Loads
(American Society of Civil Engineers, 2011)Recent research indicates that phosphorus (P) retention by bioretention systems comprising sandy media may not be effective for even a decade of urban runoff loads. To improve P retention for longer durations, this paper ... -
Evapotranspiration Modeling Using Linear Genetic Programming Technique
(American Society of Civil Engineers, 2010)The study investigates the accuracy of linear genetic programming (LGP), which is an extension to genetic programming (GP) technique, in daily reference evapotranspiration -
Performance Evaluation and Uncertainty Measurement in Irrigation Scheduling Soil Water-Balance Approach
(American Society of Civil Engineers, 2010)The present work aims at approaching the study of the performance and uncertainty associated with an irrigation scheduling method based on a soil-water balance. On a daily time step, a water-balance-based irrigation ... -
Irrigation Scheduling with Genetic Algorithms
(American Society of Civil Engineers, 2010)A typical irrigation scheduling problem is one of preparing a schedule to service a group of outlets that may be serviced simultaneously. This problem has an analogy with the classical multimachine earliness/tardiness ... -
Discussion of “Benchmark of Discharge Calibration Methods for Submerged Sluice Gates” by Carlos Sepúlveda, Manuel Gómez, and José Rodellar
(American Society of Civil Engineers, 2011) -
Farmers’ Adaptation and Regional Land-Use Changes in Irrigation Systems under Fluctuating Water Supply, South India
(American Society of Civil Engineers, 2010)In closing river basins where nearly all available water is committed to existing uses, downstream irrigation projects are expected to experience water shortages more frequently. Understanding the scope for resilience and ...