Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 1341-1360 of 3826
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Two-Dimensional Coupled Model of Surface Water Flow and Solute Transport for Basin Fertigation
(American Society of Civil Engineers, 2013)A two-dimensional coupled model is proposed for the diffusion and channeling of both surface water and solute in all possible directions in basin fertigation. In the spatial discretization of the governing equation based ... -
Economic Assessment of Water Resources Management Strategies
(American Society of Civil Engineers, 2014)This paper presents an economic framework of all potential benefits and costs arising from present activities and implementation of policies; including crop production costs, capital and operating costs of development ... -
Experimentally Determined Evaporation Rates in Pervious Concrete Systems
(American Society of Civil Engineers, 2014)As the use of pervious concrete pavements increases, evaporation of storm water retained in the pervious concrete system becomes an important design parameter. This paper extends the knowledge of experimentally determined ... -
Assessment of Reference Evapotranspiration by the Hargreaves Method in the Bekaa Valley, Lebanon
(American Society of Civil Engineers, 2013)Evapotranspiration (ET) is an important component of the hydrologic cycle, especially for irrigated agriculture. Direct methods of estimating reference ET are difficult or require many weather variables that are not always ... -
Applying Decentralized Water Level Difference Control for Operation of the Dez Main Canal under Water Shortage
(American Society of Civil Engineers, 2013)Due to water scarcity, providing reliable amounts of water is not possible for most of the irrigation districts in arid regions. In such conditions, equitable water delivery becomes one of the main concerns. Applying a ... -
Solid-Set Sprinkler Irrigation Controllers Driven by Simulation Models: Opportunities and Bottlenecks
(American Society of Civil Engineers, 2014)Farmers continue to show great differences in irrigation water use, even for a given location and crop. Irrigation advisory services have narrowed the gap between scientific knowledge and on-farm scheduling, but their ... -
Calibration of the 10HS Soil Moisture Sensor for Southwest Florida Agricultural Soils
(American Society of Civil Engineers, 2013)Precision irrigation is crucial in decreasing water demands of irrigated agriculture, which account for the largest source of water withdrawal in most regions. One necessity of precision irrigation is the knowledge of soil ... -
Calculating Discharge from Culverts under Inlet Control Using Stage at the Inlet
(American Society of Civil Engineers, 2014)Discharge through circular culverts under inlet control can be calculated using several empirical and theoretical methods; however, most methods require knowledge of site-specific characteristics, and some may even require ... -
Development of Erosion Hotspots for a Watershed
(American Society of Civil Engineers, 2013)The loss of topsoil in the United States has resulted in low crop yield, reduction of reservoir capacity, cost increase of water treatment, and detrimental effects on aquatic life and wildlife habitats. An initial step for ... -
Improved Boussinesq Equation–Based Model for Transient Flow in a Drainage Layer of Highway: Capillary Correction
(American Society of Civil Engineers, 2013)Currently, time to drain and depth of flow are the two basic concepts for designing the drainage layer of highway, both of which are based on the saturated flow and cannot reasonably evaluate the drainage efficiency of ... -
Discharge Coefficients for Orifices Cut into Round Pipes
(American Society of Civil Engineers, 2013)This study focuses on the discharge coefficient ( -
Global Sensitivity Analysis of Variably Saturated Flow and Transport Parameters and Its Implication for Crop Yield and Root Zone Hydrosalinity
(American Society of Civil Engineers, 2013)Modeling of crop yield and root zone hydrosalinity usually requires a large number of parameters that are often expensive to obtain and have associated measurement errors. Consequently, identifying the most relevant ... -
Evapotranspiration from a Green-Roof Storm-Water Control Measure
(American Society of Civil Engineers, 2013)The ability to estimate the components of the hydrologic cycle is the key to the proper design and implementation of storm-water control measures (SCMs). Reuse, infiltration, and evapotranspiration (ET) are used by SCMs ... -
Staged Labyrinth Weir Hydraulics
(American Society of Civil Engineers, 2013)Labyrinth weirs with multiple crest elevations (i.e., staged labyrinth weirs) can be used in spillway design to confine base flows to a section of the crest and/or satisfy discharge hydrograph requirements. However, ... -
Application of the GoRoSo Feedforward Algorithm to Compute the Gate Trajectories for a Quick Canal Closing in the Case of an Emergency
(American Society of Civil Engineers, 2013)The canal delivery system in the Left Hemidelta area of the Ebro River in Spain consists of a tree-shaped net of open canals. The overall system can be quickly isolated in the case of an emergency by closing the upstream ... -
Statistical Analysis of Non-Pressure-Compensating and Pressure-Compensating Drip Emitters
(American Society of Civil Engineers, 2013)Drip irrigation may need to be installed in situations in which there is not enough energy to operate the emitters under optimum performance conditions. This paper characterizes the head-discharge functional form of a ... -
Permeability of Uniform and Mixed-Size Tire Chips under Different Loading Conditions
(American Society of Civil Engineers, 2013)The permeability of uniform and mixed-size (volume based) tire chips under various overburden pressures is determined. Tire chips sizes of 5.08, 10.16, and 15.24 cm are used. The permeability tests are conducted using ... -
Discussion of “Revisiting the Energy-Momentum Method for Rating Vertical Sluice Gates under Submerged Flow Conditions” by Oscar Castro-Orgaz, Luciano Mateos, and Subhasish Dey
(American Society of Civil Engineers, 2014) -
Optimum Design of Alternate and Conventional Furrow Fertigation to Minimize Nitrate Loss
(American Society of Civil Engineers, 2013)Alternate-furrow fertigation has shown potential to improve water and fertilizer application efficiency in irrigated areas. A combination of simulation and optimization approaches permits researchers to identify optimum ...