Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 1241-1260 of 3826
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Water Use Efficiency of Surface Drip Irrigation versus an Alternative Subsurface Drip Irrigation Method
(American Society of Civil Engineers, 2014)In semiarid regions where water resources are scarce, irrigation water use efficiency is an important issue. Although subsurface drip irrigation is a very efficient irrigation method, it has had relatively limited expansion ... -
Comparison of Models for Subsurface Drainage in Flat and Sloping Lands
(American Society of Civil Engineers, 1994)Most models for subsurface drainage in flat lands are based on the Boussinesq equation. This paper compares a semianalytical model called SIDRA, which assumes a constant water‐table shape during the period of water table ... -
Effect of Fertigation on Soil Salinization and Aggregate Stability
(American Society of Civil Engineers, 2015)Physicochemical properties of a Haplic Chernozem soil were measured while applying fertigation in a natural grassland during the growing season in a hemiboreal climate with irrigation management based on the decision support ... -
Analytical Equation for Estimating the Stormwater Capture Efficiency of Permeable Pavement Systems
(American Society of Civil Engineers, 2015)Permeable pavement systems have been increasingly used for onsite storm water management. In this paper, an analytical equation is derived for calculating the long-term average storm water capture efficiency of permeable ... -
Design and Management of Subsurface Horizontal Drainage to Reduce Salt Loads
(American Society of Civil Engineers, 2001)Many irrigated areas have shallow water tables creating waterlogging and salinization problems. This has often been controlled by installation of subsurface horizontal pipe drainage; however, these systems export large ... -
Unsaturated Flow Functions for Filter Media Used in Low-Impact Development—Stormwater Management Systems
(American Society of Civil Engineers, 2015)Moisture retention relationships for coarse, high-infiltration soils are difficult to empirically determine and estimate. Present day software models for stormwater management (SWM) that are used as sizing and performance ... -
In Situ Permeability Determination Device for Porous Pavement Systems
(American Society of Civil Engineers, 2014)Porous pavement systems allow for the percolation of rainwater through the system to the underlying subsoil, which results in reduced runoff and pollutant transport. Several devices have been proposed and/or developed to ... -
Using a Surface Energy Balance Model (ReSET-Raster) to Estimate Seasonal Crop Water Use for Large Agricultural Areas: Case Study of the Palo Verde Irrigation District
(American Society of Civil Engineers, 2014)Water accounting for agricultural areas is crucial for irrigation water management. Actual crop evapotranspiration (ET) is needed as an important input for agricultural water accounting, yet obtaining accurate measurements ... -
Quantifying Excess Stormwater Using SCS-CN–Based Rainfall Runoff Models and Different Curve Number Determination Methods
(American Society of Civil Engineers, 2015)Estimation of excess storm water is among the most basic hydrological challenges for hydrologists and engineers. The initial abstraction ratio -
CFD Study of the Hydraulic Performance of Large-Diameter Gated Fluming
(American Society of Civil Engineers, 2015)The hydraulic performance of large-diameter gated fluming, commonly used in furrow irrigation, was investigated using computational fluid dynamics (CFD). The continuity and the momentum equations governing the fluid in the ... -
Drainage and Mechanical Behavior of Highway Base Materials
(American Society of Civil Engineers, 2014)The mechanical and drainage properties of graded aggregate base (GAB) materials used in mechanistic pavement design are the level one inputs. Several highway agencies need an evaluation of the stiffness and drainage ... -
Application of the Water Cycle Algorithm to the Optimal Operation of Reservoir Systems
(American Society of Civil Engineers, 2015)Water resources, in time, place, and quantity, are often poorly matched to the needs of humanity. This disparity tends to be more accentuated in arid and semiarid regions, predominant in Iran. Reservoir systems are a common ... -
SCADA Platform for Regulated Deficit Irrigation Management of Almond Trees
(American Society of Civil Engineers, 2014)Recently, supervisory control and data acquisition (SCADA) systems have become widely used in agricultural applications, particularly in conjunction with irrigation management systems that require calculated applications ... -
Evaluation of Very High Soil-Water Tension Threshold Values in Sensor-Based Deficit Irrigation Systems
(American Society of Civil Engineers, 2014)The variable and limited availability of water for irrigation in agriculture is a general challenge for farmers to cope with. Sophisticated irrigation strategies are needed that allow an efficient management of the available ... -
Determination of Irrigation Allocation Policy under Climate Change by Genetic Programming
(American Society of Civil Engineers, 2015)This paper develops and evaluates rule curves of reservoir operation and compares them for baseline and future periods. The rules are calculated by genetic programming (GP). Also, the rules extracted are based on the rate ... -
Closure to “Drainage-Process Analyses for Agricultural Non-Point-Source Pollution from Irrigated Paddy Systems” by Kang Wang, Renduo Zhang, and Hui Chen
(American Society of Civil Engineers, 2015) -
Hydraulic Characteristics of Flow over Sinusoidal Sharp-Crested Weirs
(American Society of Civil Engineers, 2015)Sharp-crested weirs are widely applied in agricultural and hydraulic engineering for measuring and regulating flow. The various shapes of weirs give rise to their special characteristics. This study introduces a novel ... -
Hydraulic Friction Factors for Pipe Flow
(American Society of Civil Engineers, 1988)Hydraulic friction loss in pipelines directly affects pipe and pump sizing, as well as the hydraulic balance of networks. All friction head‐loss equations have an uncertainty in the estimation of pipe interior surface ... -
Drain Tube Opening Effects on Drain Inflow
(American Society of Civil Engineers, 1983)Laboratory tests were conducted to determine the effects of total opening area, location of openings and gravel envelope on radial flow to 100 mm (4 in.) diam corrugated plastic drains. Radial flow theory was used to ... -
Closure to “<i>Estimating Potential Evapotranspiration</i>” by George H. Hargreaves and Zohrab A. Samani (September, 1982)
(American Society of Civil Engineers, 1983)