Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 801-820 of 3826
-
Numerical Study of the Flow over Broad-Crested Weirs by a Mesh-Free Method
(American Society of Civil Engineers, 2017)The mesh-free method, moving particle semi-implicit method (MPS), has become a useful numerical tool in simulating free-surface flows. Broad-crested weirs are considered as a common hydraulic structure and have been ... -
Two-Stage Stochastic Chance-Constrained Fractional Programming Model for Optimal Agricultural Cultivation Scale in an Arid Area
(American Society of Civil Engineers, 2017)In the agricultural irrigation system, agricultural water availability and demand are significantly affected by seasonal variations. Additionally, agricultural land use in arid regions largely depends on water availability ... -
Evaluating Control of Various Hydrological Factors on Selection of Groundwater-Level Monitoring Networks in Irrigated Areas Using a Geospatial Approach
(American Society of Civil Engineers, 2017)In a complex aquifer system, groundwater levels are highly dynamic in nature and measurement of groundwater levels requires systematic networks of observation wells (OWs) considering hydrological variations. The existing ... -
Canal Operations Planner. III: Minimizing Inequity with Delivery Performance Ratio Relaxation
(American Society of Civil Engineers, 2017)For many large irrigation systems, distributing water equitably is a stated management objective. Canal operations plans specify which canal to operate at what discharge for each irrigation interval to achieve the stated ... -
Different Quantities of Applied Water on <i>Olea europaea</i> L. Cultivated under Humid Conditions
(American Society of Civil Engineers, 2017)Due to increased occurrence and intensity of agricultural droughts in humid Mediterranean regions, monitored irrigation is becoming an increasingly inevitable element of agricultural practice. To determine the impact of ... -
Assessment of Field Spatial and Temporal Variabilities to Delineate Site-Specific Management Zones for Variable-Rate Irrigation
(American Society of Civil Engineers, 2017)Quantification and analysis of field variability are important initial steps in delineating potential variable-rate irrigation (VRI) management zones within an agricultural field. This study seeks to utilize variability ... -
Erratum for “Diagnostic Curve for Estimating Soil Dispersivity and Instantaneously Injected Mass” by Sushil K. Singh
(American Society of Civil Engineers, 2017) -
Estimation of Relative Humidity and Dew Point Temperature Using Limited Meteorological Data
(American Society of Civil Engineers, 2017)Hydrological processes such as evaporation and evapotranspiration (ET) are affected by air humidity. Air humidity is commonly expressed as relative humidity (RH) or dew point temperature (Tdew) and is required for the ... -
General Solution of Conjugate Depth Ratio (Power-Law Channels)
(American Society of Civil Engineers, 2017)Conjugate flow depth is of high practical importance and should be accurately determined in hydraulic design projects. Quantifying the hydraulic jump phenomenon is an application of specific force relation. This relation ... -
Direct Prediction of Discharge at Supercritical Flow Regime Based on Brink Depth for Inverted Semicircular Channels
(American Society of Civil Engineers, 2017)The end depth of a free overfall (also known as the brink depth) provides a good hint about how to measure discharge (Q). This technical note details two theoretical approaches for computing end depth ratio (EDR) and end ... -
Waterlogging and Salinity Management for Sustainable Irrigated Agriculture. II: Engineering Measures and Biodrainage
(American Society of Civil Engineers, 2017)The development of irrigated agriculture causes waterlogging and salinization problems in agricultural areas due to intensive seepage into the groundwater. These problems can be controlled by either implementing preventive ... -
Waterlogging and Salinity Management for Sustainable Irrigated Agriculture. I: Overview, Implication, and Plant Response
(American Society of Civil Engineers, 2017)The expansion of irrigated agriculture is required to feed the ever-increasing world population. On the other hand, the expansion of irrigated agriculture causes waterlogging and salinization problems in semiarid and arid ... -
Discussion of “Return Period–Dependent Rational Formula Coefficients for Two Locations in Texas” by David C. Froehlich
(American Society of Civil Engineers, 2017) -
Closure to “Return Period–Dependent Rational Formula Coefficients for Two Locations in Texas” by David C. Froehlich
(American Society of Civil Engineers, 2017) -
Unified Extreme-Value Distribution
(American Society of Civil Engineers, 2017)A new unified extreme-value (UEV) distribution is proposed that combines EV-1 (Gumbel), EV-2 (Frechet), and EV-3 (Weibull) distributions to better replace the generalized extreme-value (GEV) distribution in that sense. Two ... -
Evaluating Optimum Limited Irrigation Management Strategies for Corn Production in the Ogallala Aquifer Region
(American Society of Civil Engineers, 2017)Water is the major factor limiting crop production in the Ogallala Aquifer Region of the U.S. Central High Plains. Seasonal precipitation is highly variable, low in amount, and not enough to meet full corn water needs. The ... -
Volumetric Water Delivery Using Baffle Sluice Modules: New Approach
(American Society of Civil Engineers, 2017)Baffle sluice modules are used as onfarm volumetric water delivery structures. Several methods for module design have been presented so far to limit the discharge variations to the nominal design value for the variation ... -
Modeling Capillary Rise in Clinoptilolite Zeolite and Riparian Soils to Sustain Vegetation in Water-Scarce Areas
(American Society of Civil Engineers, 2017)Clinoptilolite zeolite (CZ) is being considered as a wicking material for revegetation of riparian regions in arid environments where depth to groundwater is less than 3 m. Simulation of water fluxes and water contents ... -
Discussion of “Prediction of Daily Dewpoint Temperature Using a Model Combining the Support Vector Machine with Firefly Algorithm” by Eiman Tamah Al-Shammari, Kasra Mohammadi, Afram Keivani, Siti Hafizah Ab Hamid, Shatirah Akib, Shahaboddin Shamshirband,
(American Society of Civil Engineers, 2017) -
Representation of Solid and Nutrient Concentrations in Irrigation Water from Tailwater-Recovery Systems by Surface Water Grab Samples
(American Society of Civil Engineers, 2017)Tailwater recovery (TWR) systems are being implemented on agricultural landscapes to create an additional source of irrigation water. Existing studies have sampled TWR systems using grab samples; however, the representation ...