Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 1361-1380 of 3826
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Extraction of Optimal Operation Rules in an Aquifer-Dam System: Genetic Programming Approach
(American Society of Civil Engineers, 2013)Surface water and groundwater are two important resources that can be used simultaneously to meet demand. To sustain these resources in a planning horizon, different conditions of supply and demand can be balanced by ... -
Aeration, Flow Instabilities, and Residual Energy on Pooled Stepped Spillways of Embankment Dams
(American Society of Civil Engineers, 2013)Air-water flow experiments were conducted on some flat and pooled stepped spillways with slopes of 8.9° and 26.6° in transition and skimming flows. The study comprised the observations of the flow patterns, characteristic ... -
Application of the Standardized Precipitation Index and Normalized Difference Vegetation Index for Evaluation of Irrigation Demands at Three Sites in Jamaica
(American Society of Civil Engineers, 2013)Agricultural production is a significant contributor to the economy of Jamaica, which is situated in the northwestern Caribbean Sea; this production is heavily dependent on seasonal rainfall because only approximately 10% ... -
Efficacy of Nonlinear Root Water Uptake Model for a Multilayer Crop Root Zone
(American Society of Civil Engineers, 2013)A root uptake model developed and validated for a uniform crop root zone in a semiarid agroclimate is tested for its efficacy in predicting moisture depletion in a multilayer crop root zone in a subtemperate, subhumid ... -
Discussion of “Effect of Sprinkler Head Geometrical Parameters on Hydraulic Performance of Fluidic Sprinkler” by Xingye Zhu, Shouqi Yuan, and Junping Liu
(American Society of Civil Engineers, 2014) -
Closure to “New Method for Modeling Thin-Walled Orifice Flow under Partially Submerged Conditions” by David Brandes and William T. Barlow
(American Society of Civil Engineers, 2013) -
Nondimensional Relationship for Root Water Uptake in Crops
(American Society of Civil Engineers, 2013)Root water uptake is often modeled as a sink term in the Richards equation to account for evapotranspiration losses. The sink term is assumed to be a power law function in the nonlinear root uptake model (O-R model) to ... -
Methodology to Estimate the Hydraulic Efficiency of Nontested Continuous Transverse Grates
(American Society of Civil Engineers, 2013)The aim of this paper is to improve and complete the results presented in a previous work published on this journal about an experimental campaign focused on the hydraulic efficiency of continuous transverse grates for ... -
Integrated Modeling of Conjunctive Water Use in a Canal-Well Irrigation District in the Lower Yellow River Basin, China
(American Society of Civil Engineers, 2013)The Yellow River Basin is a closed basin under serious stress with dense population, intensive agriculture, and excess water withdrawals. Low water use efficiency and groundwater overexploitation are threatening the ... -
Multivariable and Distributed LQG Control of a Water Delivery Canal
(American Society of Civil Engineers, 2013)This paper addresses the problem of the development of a distributed linear quadratic Gaussian (LQG) controller for a water delivery canal. The control structure proposed relies on a set of LQG control agents interconnected ... -
Determination of Crop Water Stress Index and Irrigation Timing on Olive Trees Using a Handheld Infrared Thermometer
(American Society of Civil Engineers, 2013)Leaf temperature has long been recognized as an indicator of water availability. The stress level in a plant can be quantified from leaf temperature by using the crop water stress index (CWSI). In this study, it was ... -
Spatial Distribution of Soil Moisture and Fine Roots of Apple Trees under Water Storage Pit Irrigation
(American Society of Civil Engineers, 2014)This study was conducted to determine the spatial distribution of soil moisture and fine roots (white, diameter -
Constrained Predictive Control of an Irrigation Canal
(American Society of Civil Engineers, 2013)This paper presents the application of a distributed model predictive controller (DMPC) to the control of an accurate model of an actual irrigation canal in Spain. The canal is modeled using the Saint-Venant equations and ... -
Modeling and Calibration of Drainage Denitrification Bioreactor Design Criteria
(American Society of Civil Engineers, 2013)Design methods for agricultural drainage denitrification bioreactors must be optimized for these novel systems to provide maximized water quality improvement. The objective of this paper was to further develop science-based ... -
Closure to “Resistance to Shallow Uniform Flow in Small, Riprap-Lined Drainage Channels” by David C. Froehlich
(American Society of Civil Engineers, 2013) -
Interactive Irrigation Tool for Simulating Smart Irrigation Technologies in Lawn Turf
(American Society of Civil Engineers, 2013)A simple model was developed to explore the effect of water saving technologies by simulating the soil water balance in a lawn turfgrass system based on site-specific soil characteristics, irrigation schedule, real-time ... -
Relationship between Urban Runoff Pollutant and Catchment Characteristics
(American Society of Civil Engineers, 2013)Much research has been done to determine levels of contamination in runoff from urban and rural catchment areas. Some authors compare their results with other authors or look for relationships between the variations of ... -
Retention and Transport of Nitrate and Ammonium in Loamy Sand Amended with Clinoptilolite Zeolite
(American Society of Civil Engineers, 2013)Agricultural soils of southern New Mexico, especially sand and sandy loams receiving numerous nitrogen (N) fertilizations, are prone to leaching large amounts of N to shallow groundwater. Adsorption and leaching experiments ... -
Integrated Modeling Framework to Evaluate Conjunctive Use Options in a Canal Irrigated Area
(American Society of Civil Engineers, 2013)In canal irrigated areas, where interactions between surface water and groundwater are high, the conjunctive management of surface water and groundwater can play a significant role in improving water availability in time ... -
Modified Model for Simulating Hydrologic Processes for Plastic Mulch Production Systems
(American Society of Civil Engineers, 2013)A lumped hydrologic model (ACRU2K.1), developed from ACRU2000, was extended and evaluated to simulate water dynamics in a plastic mulch bedded system for vegetable production under high water table environments. The updated ...