Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 1581-1600 of 3826
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Off-Stream Detention Design for Storm-Water Management
(American Society of Civil Engineers, 2012)A detention basin is designed for storm-water quantity and quality controls. An in-stream basin is often located on a widened floodplain, whereas an off-stream basin can be part of open space in a parking lot, park, or ... -
Assessing the Impact of Irrigation Return Flow on River Salinity for Colorado’s Arkansas River Valley
(American Society of Civil Engineers, 2012)A river salinity model has been developed on the 21 major canal areas in the lower Arkansas River Basin in Colorado to address the impact of irrigation return flow on the river. The quantity of the return flow is predicted ... -
Estimation of Border-Strip Soil Hydraulic Parameters
(American Society of Civil Engineers, 2012)The inverse problem of determining soil hydraulic parameters (saturated hydraulic conductivity and water retention parameters) of border-strip irrigation from irrigation event data is analyzed. The inverse problem is solved ... -
Boussinesq Equation-Based Model for Flow in the Drainage Layer of Highway with Capillarity Correction
(American Society of Civil Engineers, 2012)The current engineering design of the highway drainage layer is typically based on the groundwater table elevation predicted by saturated flow models. Capillary effects may become significant, with unsaturated flow playing ... -
Generalized Neurofuzzy Models for Estimating Daily Pan Evaporation Values from Weather Data
(American Society of Civil Engineers, 2012)Estimation of daily pan evaporation values is of most importance in water resource system management and planning. This paper presents a study aimed at developing generalized neurofuzzy (GNF)–based evaporation models ... -
Using Location-Allocation Algorithms to Distribute Multioutlet Hydrants in Irrigation Networks Design
(American Society of Civil Engineers, 2012)Location-allocation algorithms allow for situating services in an efficient way in zones where the demand is dispersed across the area. In the present work, the minisum location-allocation algorithm is used to optimize the ... -
Simulation of Unsteady Flow and Soil Erosion in Irrigation Furrows
(American Society of Civil Engineers, 2012)This study developed a one-dimensional numerical model for the simulation of unsteady flow and the resultant soil erosion in irrigation furrows. The model solves a modified version of the Saint-Venant equations that consider ... -
Validation of Landscape Irrigation Reduction with Soil Moisture Sensor Irrigation Controllers
(American Society of Civil Engineers, 2012)The objective of this project was to determine if automatic residential irrigation systems with soil moisture sensor irrigation controllers could reduce irrigation water application while maintaining acceptable turfgrass ... -
Regional Calibration of Solar Radiation and Reference Evapotranspiration Estimates with Minimal Data in Florida
(American Society of Civil Engineers, 2012)Reference evapotranspiration and solar radiation estimation methods that use only measured temperature have been demonstrated to require regional calibration for acceptable performance. This study was conducted to evaluate ... -
Engelund’s Two-Dimensional Drainage Equation for a Toe-Drain and the Dupuit-Forchheimer Drainage Equation for a Ditch: A Coincidental Match
(American Society of Civil Engineers, 2012)Water-table heights attributable to steady uniform surface accretion rates in drained lands overlying a horizontal impermeable bed are given analytically by Engelund’s solution for toe-drains and by the approximate ... -
Discussion of “Scour due to Crossing Jets at Fixed Vertical Angle” by Stefano Pagliara, Dipankar Roy, and Michele Palermo
(American Society of Civil Engineers, 2012) -
Using Disjunctive Kriging as a Quantitative Approach to Manage Soil Salinity and Crop Yield
(American Society of Civil Engineers, 2012)Disjunctive kriging (DK) is a nonlinear geostatistical model that provides unbiased estimates of the conditional probability (CP) that the true value of the property of interest does not exceed a defined threshold. It has ... -
Field Assessment of Friction Head Loss and Friction Correction Factor Equations
(American Society of Civil Engineers, 2012)Friction head loss equations and friction correction factors were evaluated and compared to field observations collected from thirty center pivots with laterals made of PVCs. The friction head loss equations include ... -
Effect of Irrigation Methods on Groundwater Recharge in Alluvial Fan Area
(American Society of Civil Engineers, 2012)Estimation of water table and recharge is a key component in the control of groundwater level in arid and semiarid regions such as northwestern China. This study compared groundwater recharge in land subject to flood-irrigation ... -
Groundwater Contribution by Safflower (<i>Carthamus tinctorius L.</i>) under High Salinity, Different Water Table Levels, with and without Irrigation
(American Society of Civil Engineers, 2012)Lysimetric experiments were conducted to investigate groundwater contributions made by safflower crop ( -
Sectoral Conjunctive Use Planning for Optimal Cropping under Hydrological Uncertainty
(American Society of Civil Engineers, 2012)The canal command of the Hirakud multipurpose major irrigation project of Orissa in eastern India is under severe threat of waterlogging in the monsoon season and acute shortage of irrigation water in the nonmonsoon season. ... -
Field Test of the Variable Source Area Interpretation of the Curve Number Rainfall-Runoff Equation
(American Society of Civil Engineers, 2012)The Soil Conservation Service Curve Number (SCS-CN) method is a widely used empirical rainfall-runoff equation. Although the physical basis of the method has been debated, several researchers have suggested that it can be ... -
Long Term Expanding-Disk Rain Sensor Accuracy
(American Society of Civil Engineers, 2012)Rain sensors are devices that connect to automatic irrigation systems to interrupt scheduled irrigation events as a result of rainfall. The accuracy of expanding-disk rain sensors over nearly five years was evaluated at a ... -
Analysis of Microclimate Data Measured over Grass and Soybean Canopy and Their Impacts on Penman-Monteith Grass and Alfalfa Reference Evapotranspiration
(American Society of Civil Engineers, 2012)The use of Penman-Monteith (PM)-type combination-based energy-balance equations to estimate reference evapotranspiration ( -
Resistance to Shallow Uniform Flow in Small, Riprap-Lined Drainage Channels
(American Society of Civil Engineers, 2012)Small drainage channels lined with rock riprap are often designed using Manning’s formula for uniform flow to calculate water depths and velocities. Resistance to flow is quantified by the Manning roughness coefficient