Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 2801-2820 of 3826
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Classification of Canal Control Algorithms
(American Society of Civil Engineers, 1998)Different control algorithms for the regulation of irrigation canals have been developed and applied throughout the world. Each of them can be characterized according to several criteria, among which are: the considered ... -
Discussion and Closure: Performance of Baffle-Sluice Module with Changed Module Dimensions
(American Society of Civil Engineers, 1997) -
Hydrodynamic Modeling of Basin Irrigation
(American Society of Civil Engineers, 1997)In this study, a hydrodynamic model is presented for simulating basin irrigation. An explicit, second-order-accurate finite-volume technique is used for solving the two-dimensional governing equations of basin irrigation. ... -
Surface Storage in Furrow Irrigation Evaluation
(American Society of Civil Engineers, 1997)Assessment of the surface storage is of great importance in hydrological surface irrigation. For the Horton infiltration law used in the ALIVE model (Advanced LInear VElocity), an accurate measurement of surface storage ... -
Sodic Soil Reclamation Using Multicomponent Transport Modeling
(American Society of Civil Engineers, 1997)High contents of soluble salts accumulated in a soil can significantly decrease the value and productivity of agricultural lands. Present recommendations for reclamation are usually based only on relatively simple and often ... -
Economic Optimization of Furrow Irrigation
(American Society of Civil Engineers, 1997)A seasonal furrow irrigation model was constructed from soil moisture, kinematic-wave hydraulic, and economic optimization models to study the effects of heterogeneity in water balance, soil water holding properties and ... -
Green and Ampt Infiltration with Redistribution
(American Society of Civil Engineers, 1997)Distributed, physically based watershed and irrigation advance models require robust infiltration estimation capabilities. The empirical Green and Ampt (GA) equation of infiltration is a popular method for estimating ... -
Computation of ETo under Nonideal Conditions
(American Society of Civil Engineers, 1997)The Food and Agriculture Organization of the United Nations (FAO) version of the Penman-Monteith method (FAO-PM) has recently been proposed as the standard for estimating reference evapotranspiration (ETo). A standard, ... -
Hydrologic Modeling of a Complex Wetland
(American Society of Civil Engineers, 1997)A coupled model was used to simulate the hydrology of a 22 km -
Analysis of Flow through Lateral Slot
(American Society of Civil Engineers, 1997)Analysis of diversion of flow has received considerable importance in existing literature. In this study, diversion of flow through a lateral slot is analyzed using the spatially varied flow equation and the elementary ... -
Short Sewer Sideweir
(American Society of Civil Engineers, 1997)Sideweirs for combined sewers in converging U-shaped channels are analyzed. The results are applicable for storm sewers. Based on extended model observations and a hydraulic approach, the characteristics of sideweir flow ... -
Unsaturated Drainage Layers for Diversion of Infiltrating Water
(American Society of Civil Engineers, 1997)An approach for draining water from unsaturated soil is presented that utilizes a sloping system of a fine sand overlying a coarser sand or gravel. In this configuration, referred to as an unsaturated drainage layer, the ... -
Volume Balance Irrigation Advance Equation: Variation of Surface Shape Factor
(American Society of Civil Engineers, 1997)In application of the volume balance (VB) models, it is generally assumed that the average depth of surface water is constant. This basic assumption may cause significant errors in computing advance. In this paper an ... -
Spatially Varied Flow over an Embankment Side Weir
(American Society of Civil Engineers, 1997)Overtopping of embankments during floods leads to a spatially varied flow (SVF). In order to estimate the water surface profiles and the amount of water spilling over the embankment for a given steady-state flow condition, ... -
Artificial Neural Network Model for Subsurface-Drained Farmlands
(American Society of Civil Engineers, 1997)This paper describes the development of an artificial neural network (ANN) model to simulate fluctuations in midspan water-table depths and drain outflows, as influenced by daily rainfall and potential evapotranspiration ... -
Water Rights to Return Flow from Urban Landscape Irrigation
(American Society of Civil Engineers, 1997)This paper presents our research on the issue of water rights to return flow from irrigation of urban landscapes. Municipalities in Colorado's Front Range, with rights to transmountain water and other “use to extinction” ... -
Discussion and Closure: Interseasonal Irrigation System Planning for Waterlogged Sodic Soils
(American Society of Civil Engineers, 1997) -
Salt Distributions in Cracking Soils and Salt Pickup by Runoff Waters
(American Society of Civil Engineers, 1997)Detailed measurements were made of the levels and distributions of salts present in representative soil profiles and fields and associated tailwaters in the Imperial Valley of California. The findings showed that the ... -
Salt Transport in Cracking Soils: Bromide Tracer Study
(American Society of Civil Engineers, 1997)Cracking clay soils pose unique and complex water and salt management problems. Crack volumes greatly affect water and salt movement in these soils. The purpose of our study was to determine the effect of crack flow on ... -
Water Table Depth and Rainfall Timing Effect on BR<sup>−</sup> and NO3- Transport
(American Society of Civil Engineers, 1997)Effect of water table depth and rainfall timing on bromide and nitrate transport was investigated using large undisturbed columns (30 cm in diameter and 90 cm long) obtained from Rossburg silt loam and Clermont silt loam ...