Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 2521-2540 of 3826
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Hydraulics of Large Culvert beneath Roman Aqueduct of Nı⁁mes
(American Society of Civil Engineers, 2002)The Romans built ancient culverts beneath roads and aqueducts. The hydraulic operation of a large culvert, built around the 1st century A.D. beneath the Nı⁁mes aqueduct, is described. The investigation shows the advanced ... -
Analytical Solution for Transient Water Table Heights and Outflows from Inclined Ditch-Drained Terrains
(American Society of Civil Engineers, 2002)This paper presents two analytical solutions of the linearized Boussinesq equation for an inclined aquifer, drained by ditches, subjected to a constant recharge rate. These solutions are based on different initial conditions. ... -
Monitoring and Evaluation Scheme using the Multiple-Criteria-Decision-Making Technique: Application to Irrigation Projects
(American Society of Civil Engineers, 2002)The application of monitoring and evaluation (M&E) systems to assess agricultural projects has received some attention in recent years. These systems provide valuable information for managers and decision makers by analyzing ... -
Water Quality Aspects of Irrigation and Drainage: Past History and Future Challenges for Civil Engineers
(American Society of Civil Engineers, 2002)This paper presents a brief history of irrigation and drainage related to ASCE activities on its Jubilee. This paper discusses legislation and policies that affect irrigation and drainage practices, water quality constituents ... -
Efficient Algorithm for Gradually Varied Flows in Channel Networks
(American Society of Civil Engineers, 2002)This paper presents an efficient solution technique for one-dimensional unsteady flow routing through a general channel network system—dendritic, looped, divergent, or any combination of such networks. The finite difference ... -
Awards: Best Paper Awards
(American Society of Civil Engineers, 2002) -
Determining Minor Head Losses in Drip Irrigation Laterals. II: Experimental Study and Validation
(American Society of Civil Engineers, 2002)Values of friction coefficient -
Leaky One-Dimensional Flow with Storage and Skin Effect in Finite-Width Sink
(American Society of Civil Engineers, 2002)One-dimensional horizontal flow in a semiinfinite confined aquifer can be described in terms of mathematical solutions that relate drawdown in the aquifer to aquifer parameters and flow into or out of a line sink. A new ... -
Discussion of “EDR in Circular Channels” by Subhasish Dey
(American Society of Civil Engineers, 2002) -
Drop in Combined Sewer Manhole for Supercritical Flow
(American Society of Civil Engineers, 2002)Manholes often contain small drops for various reasons, the most important being submergence. While this may be appropriate for subcritical flow, its effect was considered doubtful for supercritical flow. This note aims ... -
Estimating Evapotranspiration using Artificial Neural Network
(American Society of Civil Engineers, 2002)This study investigates the utility of artificial neural networks (ANNs) for estimation of daily grass reference crop evapotranspiration (ETo) and compares the performance of ANNs with the conventional method (Penman–Monteith) ... -
Numerical Modeling of Basin Irrigation with an Upwind Scheme
(American Society of Civil Engineers, 2002)In recent years, upwind techniques have been successfully applied in hydrology to simulate two-dimensional free surface flows. Basin irrigation is a surface irrigation system characterized by its potential to use water ... -
Alternative Delivery Scheduling for Improved Canal System Performance
(American Society of Civil Engineers, 2002)Alternative delivery scheduling approaches intended to overcome the problem of low efficiency in Indian irrigation projects are presented. The features of the historical delivery schedules in the Right Bank Main Canal ... -
Influence of Sluice Gate Contraction Coefficient on Distinguishing Condition
(American Society of Civil Engineers, 2002)Sluice gates are widely used for flow control in open channels. Flow through the gate may be free or submerged depending on tailwater depth. One may determine whether the flow will be free or submerged by determining the ... -
Optimal Design of Transmission Canal
(American Society of Civil Engineers, 2002)This paper presents design equations for the least-cost canal sections considering earthwork cost which may vary with depth of excavation, cost of lining, and cost of water lost as seepage and evaporation from irrigation ... -
Equivalent Friction Factor Method for Hydraulic Calculation in Irrigation Laterals
(American Society of Civil Engineers, 2002)A simplified method for the resolution of lateral hydraulic problems in laminar and turbulent flow is presented. In the first stage, the head losses are calculated by applying the Darcy–Weisbach equation with a discrete ... -
Optimal Barrage Design based on Subsurface Flow Considerations
(American Society of Civil Engineers, 2002)A barrage, a structure across a river to divert flow into a man-made channel, is designed to satisfy surface and subsurface flow considerations. There is, however, no procedure to fix the basic barrage parameters, which ... -
Review of <i>Improving irrigation governance and management in Nepal</i> edited by G. P. Shivakoti and E. Ostrom
(American Society of Civil Engineers, 2002) -
Integrated Water Management for the 21st Century: Problems and Solutions
(American Society of Civil Engineers, 2002)Most of the projected global population increases will take place in third world countries that already suffer from water, food, and health problems. Increasingly, the various water uses (municipal, industrial, and ... -
Closure to “Optimal Design of Parabolic-Bottomed Triangle Canals” by K. Babaeyan-Koopaei, E. M. Valentine, and D. C. Swailes
(American Society of Civil Engineers, 2002)