Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 1841-1860 of 3826
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Influence of Tailwater Depth and Pile Position on Scour Downstream of Block Ramps
(American Society of Civil Engineers, 2010)Scour control downstream of hydraulic structures is an important topic in hydraulic engineering. Block ramps or rock chutes are often used to control scour downstream of hydraulic structures and have the peculiarity to be ... -
Comparison of Simplified Pan-Based Equations for Estimating Reference Evapotranspiration
(American Society of Civil Engineers, 2010)Accurate estimation of reference evapotranspiration -
Design of Level Ground Laterals in Trickle Irrigation Systems
(American Society of Civil Engineers, 2009)A nonlinear differential equation describing the pressure head grade line along nontapered laterals is derived. For horizontal pipes, the solution of the problem yields the pressure head grade line implicitly in an integral ... -
Green-Ampt One-Dimensional Infiltration from a Ponded Surface into a Heterogeneous Soil
(American Society of Civil Engineers, 2010)Saturated hydraulic conductivity and wetting front pressure head (as soil properties) on an abrupt Green-Ampt front are assumed to increase and decrease with depth of a porous heterogeneous soil subject to a constant ponding ... -
Approach Using Active Groundwater Storage for Hydrologic Model Calibration in West-Central Florida
(American Society of Civil Engineers, 2010)Hydrologic model calibration is always a challenging and tedious process especially for the calibration of complex models, which includes continuous hydrograph models, requires sophisticated calibration methods. The ... -
Closure to “Quick Method for Estimating Furrow Infiltration” by Damodhara R. Mailapalli, W. W. Wallender, N. S. Raghuwanshi, and R. Singh
(American Society of Civil Engineers, 2010) -
Development of Soil and Water Assessment Tool Model on Human Water Use and Application in the Area of High Human Activities, Tianjin, China
(American Society of Civil Engineers, 2010)The basin water cycle affected by human activities presents the duality of natural and human characteristics. The effect of human activities to hydrology is becoming point of focus in the world with the development of ... -
Diagnostic Curves for Identifying Leaky Aquifer Parameters with or without Aquitard Storage
(American Society of Civil Engineers, 2010)Two sets of unimodal diagnostic curves, one set assumes no aquitard storage and the other set assumes aquitard storage, are developed for identifying the parameter of leaky aquifers from early drawdowns, which yields ... -
Closure to “Optimal Design of Pressurized Irrigation Subunit” by Ravindra V. Kale, Rajesh P. Singh, and Pooran S. Mahar
(American Society of Civil Engineers, 2009) -
Supervision and Water Depth Automatic Control of an Irrigation Canal
(American Society of Civil Engineers, 2010)A supervisory and control system developed for a Portuguese irrigation canal system equipped with motorized sluice gates and buffer reservoirs is presented. The article discusses the development and tuning of the canal ... -
Discussion of “Improved Channel Cross Section with Two-Segment Parabolic Sides and Horizontal Bottom” by Said M. Easa
(American Society of Civil Engineers, 2010) -
Closure to “Method of Solution of Nonuniform Flow with the Presence of Rectangular Side Weir” by Maurizio Venutelli
(American Society of Civil Engineers, 2009) -
Integrated Emitter Local Loss Prediction Using Artificial Neural Networks
(American Society of Civil Engineers, 2010)This paper describes an application of artificial neural networks (ANNs) to the prediction of local losses from integrated emitters. First, the optimum input-output combination was determined. Then, the mapping capability ... -
Optimal Spacing in an Array of Fully Penetrating Ditches for Subsurface Drainage
(American Society of Civil Engineers, 2010)A methodology for optimal spacing in an array of ditches fully penetrating into homogeneous and isotropic porous medium of finite depth over an impervious layer is presented. The cost function includes the depth-dependent ... -
Field Properties in Surface Irrigation Management and Design
(American Society of Civil Engineers, 2009)Field properties—topography, hydraulic resistance, and infiltration—play an important role in the performance of surface irrigation systems, and appropriate characterizations of these are required as data input to simulation ... -
Application of Software for Automatic Canal Management (SacMan) to the WM Lateral Canal
(American Society of Civil Engineers, 2010)Simulation studies have demonstrated that automatic control of canals is more effective when feedforward scheduling, or routing of know demand changes, is combined with centralized, automatic, distant, downstream water ... -
Slip-Lined Culvert Inlet End Treatment Hydraulics
(American Society of Civil Engineers, 2010)Relined culverts must be able to pass the design flood while meeting the necessary embankment freeboard condition. For inlet and outlet control culvert flow conditions, the discharge capacity of a slip-lined culvert is ... -
Closure to “Rapid Evaluations of Anticlogging Performance of Drip Emitters by Laboratorial Short-Cycle Tests” by Qingsong Wei, Yusheng Shi, Gang Lu, Wenchu Dong, and Shuhuai Huang
(American Society of Civil Engineers, 2009) -
Discharge Capacity of Labyrinth Side Weir Located on a Straight Channel
(American Society of Civil Engineers, 2010)Side weirs, also known as lateral weirs, are flow diversion devices widely used in irrigation as a head regulator of distributaries and escapes, land drainage, and urban sewage systems. The studies on the subject have been ... -
Graphical Sizing of Small Single-Outlet Detention Basins in the Semiarid Southwest
(American Society of Civil Engineers, 2009)A graphical procedure is presented for sizing single-outlet detention basins to control stormwater runoff from small catchments in the semiarid southwestern United States. The approach relies on the modified rational method ...