Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 1441-1460 of 3826
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Discharge Coefficients for Baffle-Sluice Gates
(American Society of Civil Engineers, 2013)In this work, the discharge coefficients of four well-defined operation stages of baffle-sluice gates are presented and modeled using the individual contributions of weir and sluice flow components. Existing empirical ... -
Alfalfa Water Use and Crop Coefficients across the Watershed: From Theory to Practice
(American Society of Civil Engineers, 2013)In this study, remote sensing technology and crop production functions were used to compare the theoretical crop coefficient ( -
Regionalization of the Hargreaves Coefficient for the Assessment of Distributed Reference Evapotranspiration in Southern Italy
(American Society of Civil Engineers, 2013)The Hargreaves equation (HE) is the most reliable and diffused temperature-based method for the estimate of the reference crop evapotranspiration -
Examining the Feasibility of Hydropower Generation in Irrigation Canals: Middle Rio Grande Conservancy District
(American Society of Civil Engineers, 2013)Irrigation districts in the American West and throughout the world have extensive canal networks that could be utilized to generate a significant amount of hydropower. As the world attempts to become less dependent on ... -
Estimating Daily and 24-Hour Net Radiation for All Sky Conditions through Remote Sensing and Climatic Data
(American Society of Civil Engineers, 2013)Net radiation is a key variable in hydrological studies. However, measured net radiation data are rarely available and are often subject to error because of equipment calibration or failure. Additionally, point measurements ... -
Evaluating <i>SEDCAD</i> Model Performance on Reclaimed Coal Mine Lands in East Tennessee
(American Society of Civil Engineers, 2013)The -
Quantifying Evaporation from Pervious Concrete Systems: Methodology and Hydrologic Perspective
(American Society of Civil Engineers, 2013)Permeable pavements underlain by infiltration beds have been used as storm-water control measures (SCMs) for several decades. As a design practice, runoff volume reduction in those systems is attributed exclusively to ... -
Discharge Coefficient for Siphon Spillways
(American Society of Civil Engineers, 2013)The study deals with the discharge coefficient for siphon spillways based on the results of experimental methods and numerical simulations. Siphon spillways are used as the outlet in reservoirs to control the incoming flood ... -
Integrated Watershed Management with Multiobjective Land-Use Optimizations under Uncertainty
(American Society of Civil Engineers, 2013)Integrated watershed management plays an important role in the environment and ecosystem. This paper analyzes multiobjective optimizations of agricultural land-use management problems with uncertainty involved. For each ... -
Survey of Irrigation Methods in California in 2010
(American Society of Civil Engineers, 2013)Reliable information on irrigation methods is important for determining agricultural water demand trends. The authors have therefore conducted a study over the course of 2011 to collect information on the irrigation methods ... -
Design of Level Basin Irrigation Systems for Robust Performance
(American Society of Civil Engineers, 2013)A well-designed level basin irrigation system is easy to manage and has significant potential for achieving high application efficiency and improved salinity control, particularly when the field is laser-leveled. Over the ... -
Spatiotemporal Distribution of Calibration Coefficients of Hargreaves Equation for Estimating Potential Evapotranspiration in Mainland China
(American Society of Civil Engineers, 2013)It is important to calibrate the potential evapotranspiration measured by the Hargreaves method ( -
Piano Key Weir Hydraulics and Labyrinth Weir Comparison
(American Society of Civil Engineers, 2013)A piano key (PK) weir is a type of nonlinear (labyrinth-type) control structure with a relatively small spillway footprint. No standard PK weir design procedure is available, and the amount of published information on PK ... -
Soil Water Retention Characteristics of Black Soils of India and Pedotransfer Functions Using Different Approaches
(American Society of Civil Engineers, 2013)Information on soil hydraulic properties is a prerequisite in irrigation management decisions and crop planning. Such information on soils of the black soil region (BSR) occupying -
Using Thermal Units for Crop Coefficient Estimation and Irrigation Scheduling Improves Yield and Water Productivity of Corn (<i>Zea mays</i> L.)
(American Society of Civil Engineers, 2013)Estimates of the daily crop coefficient (Kc) for corn and irrigation scheduling were performed during 2009 and 2010 by means of two approaches: Treatment I, computation of Kc using the Food and Agriculture Organization of ... -
Water Application Efficiency and Adequacy of ET-Based and Soil Moisture–Based Irrigation Controllers for Turfgrass Irrigation
(American Society of Civil Engineers, 2013)Increasing competition for water and the desire for high-quality turfgrass require sound irrigation water management. The main objective of this study was to evaluate two types of commercially available irrigation control ... -
Field Demonstration of Polyacrylamide in an Unlined Irrigation Canal
(American Society of Civil Engineers, 2013)Although polyacrylamide (PAM) use for reducing soil erosion and increasing water retention is common in agriculture, research suggests PAM application may also be effective in reducing seepage in unlined irrigation canals. ... -
Effect of the Capillary Fringe on Steady-State Water Tables in Drained Lands. II: Effect of an Underlying Impermeable Bed
(American Society of Civil Engineers, 2013)A tension-saturated capillary fringe above the water table in drained lands gives rise to lower water tables than would occur in its absence. Results of a conformal mapping solution for the flow from uniform steady rainfall ... -
Optimal Design of Rural Drainage Networks
(American Society of Civil Engineers, 2013)In this paper, a novel procedure is presented and demonstrated for the optimal design of rural drainage networks, based on the coupling of a genetic algorithm with suitable hydrologic and hydraulic models. The models, which ... -
Role of Transpiration Reduction during Center-Pivot Sprinkler Irrigation in Application Efficiency
(American Society of Civil Engineers, 2013)The magnitude and duration of corn transpiration reduction during center-pivot sprinkler irrigation was analyzed on a commercial plot. The irrigation event was defined as the period during which the pivot arm was passing ...