Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 2561-2580 of 3826
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Microirrigation Lateral Design using Lateral Discharge Equation
(American Society of Civil Engineers, 2002)A simple and accurate method is developed for designing single, paired, and tapered microirrigation laterals. The hydraulics of the lateral is evaluated using a lateral discharge equation approach. A simple power equation ... -
Closure to “Simple Flume for Flow Measurement in Open Channel” by Zohrab Samani and Henry Magallanez
(American Society of Civil Engineers, 2002) -
Discussion of “Simple Flume for Flow Measurement in Open Channel” by Zohrab Samani and Henry Magallanez
(American Society of Civil Engineers, 2002) -
1. Field and Laboratory Studies of Acid Sulfate Soils
(American Society of Civil Engineers, 2002)Drains are introduced into acid sulfate (AS) soils grown to sugar cane to prevent waterlogging and drain runoff water. Drains have the potential to promote deleterious reactions and facilitate the transport of the resulting ... -
Aquifer Diffusivity and Stream Resistance from Varying Stream Stage
(American Society of Civil Engineers, 2002)An efficient method that uses discrete ramp kernel is proposed for obtaining the piezometric head in an aquifer due to an arbitrary variation in stream stage considering stream resistance. The method assumes straight line ... -
Closure to “Stability and Mobility of Sand-Bed Channels Affected by Seepage” by Achanta Ramakrishna Rao and Nagaraj Sitaram
(American Society of Civil Engineers, 2002) -
Comparison of Models for Computing Drainage Discharge
(American Society of Civil Engineers, 2001)The WAVE model describes the transport and transformations of matter and energy in the soil, crop, and vadose environment. A lateral field drainage subprogram was added to the WAVE model to simulate lateral subsurface ... -
Influence of Streamwise Bed Slope on Sediment Threshold under Stream Flow
(American Society of Civil Engineers, 2001) -
Multidimensional Infiltration with Arbitrary Surface Fluxes
(American Society of Civil Engineers, 2001)A new solution to the multidimensional linearized Richards equation was derived using a Fourier integral transform. Exponential functional forms -
Irrigation Performance using Hydrological and Remote Sensing Modeling
(American Society of Civil Engineers, 2002)Development of water saving measures requires a thorough understanding of the water balance. Irrigation performance and water accounting are useful tools to assess water use and related productivity. Remote sensing and a ... -
Decision Support System for Estimating Reference Evapotranspiration
(American Society of Civil Engineers, 2002)Evapotranspiration (ET) is a major component of the hydrologic cycle and its accurate estimation is essential for hydrological studies. In the past, various estimation methods have been developed for different climatological ... -
Dimensionless Curves for Normal-Depth Calculations in Canal Sections
(American Society of Civil Engineers, 2001)Normal depth is an important parameter for the design of irrigation canals. Direct analytical solution of normal depth is not possible because of the implicit nature of governing equations. The solution usually requires ... -
Continuous Outflow Variation along Irrigation Laterals: Effect of the Number of Outlets
(American Society of Civil Engineers, 2002)Previous continuous-uniform outlet discharge approaches for the hydraulic analysis of irrigation laterals are generally valid for large (theoretically) infinite number of outlets. For a finite number of outlets, however, ... -
Microirrigation Submain Unit with Pressure Reducing Pipes
(American Society of Civil Engineers, 2002)A pressure reducing pipe (PRP), used at the inlet of a lateral in microirrigation systems to improve water application uniformity, is developed. It is composed of an internal spiral and a sleeve pipe and is made of molded ... -
Falling Water Tables in Horizontal/Sloping Aquifer
(American Society of Civil Engineers, 2001)To describe falling water tables between two drains lying on a horizontal/sloping impermeable barrier, analytical solutions of the Boussinesq equation linearized by Baumann's and Werner's methods and numerical solutions ... -
Quantifying Management of Irrigation and Drainage Systems
(American Society of Civil Engineers, 2002)To evaluate the performance of irrigation systems, different indicators have been used by researchers. In this study some of the water management problems of three different irrigation systems in Iran are presented. In ... -
Comparison of Vapor-Pressure-Deficit Calculation Methods—Southern High Plains
(American Society of Civil Engineers, 2001) -
Reservoir Release Policy for Large Irrigation System
(American Society of Civil Engineers, 2001)This paper describes the formulation of a model for optimized crop and water planning decisions in an irrigation system in Thailand. It facilitates consultation in which representatives of stakeholders, officials, farmers, ... -
Reduced-Runoff Irrigation of Sudan Grass Hay, Imperial Valley, California
(American Society of Civil Engineers, 2001)Sudan grass is a moderately salt-tolerant annual that is capable of substantial osmotic adjustment under high soil salinity conditions, but little is documented about its actual water use and yield under saline conditions. ... -
Deflecting Velocity Rod for Flow Measurements in Small Channels
(American Society of Civil Engineers, 2001)A hinged rod, when immersed in flowing water, deflects against its weight due to the hydrodynamic force of water. A relationship was derived to calculate the average flow velocity in small channels from the deflection of ...