Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 1921-1940 of 3826
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Optimal and Postirrigation Volume Balance Infiltration Parameter Estimates for Basin Irrigation
(American Society of Civil Engineers, 2009)Engineering analysis of surface irrigation systems is predicated on reasonably accurate estimates of a field’s infiltration properties. Optimal estimation methods pose multiple volume balance equations at various stages ... -
Experiments on Discharge Equations of Compound Broad-Crested Weirs
(American Society of Civil Engineers, 2009)A linear combination of traditional discharge equations for simple rectangular and/or triangular weirs is proposed to describe the discharge equations of compound broad-crested (CBC) weirs. The CBC weirs are composed of ... -
Benchmark of Discharge Calibration Methods for Submerged Sluice Gates
(American Society of Civil Engineers, 2009)Real accuracy of several calibration methods for sluice gates working in the submerged orifice flow condition was determined considering water discharge from water levels and gate openings. Data were taken from three gates ... -
Slope Interrupter Best Management Practice Experiments on a Tilting Soil Bed with Simulated Rainfall
(American Society of Civil Engineers, 2009)This paper documents an experimental study conducted to evaluate the performance of two commonly used sediment treatment control products, albeit with contrasting treatment technologies: a fiber roll or wattle (i.e., ... -
Supercritical Flow Measurement Using a Small Parshall Flume
(American Society of Civil Engineers, 2009)An experimental program was conducted to determine if a Parshall flume, developed to accurately measure open-channel subcritical flow, could also be used to measure discharge in a supercritical flow regime. Fifteen ... -
Geographic Variability of Rainfall Erosivity Estimation and Impact on Construction Site Erosion Control Design
(American Society of Civil Engineers, 2009)The Revised Universal Soil Loss Equation (RUSLE) is used often by erosion control planners to estimate the soil loss from urban construction sites when sizing sediment ponds and determining the soil loss under vegetative ... -
Potential Impact of Climate Change on Subsurface Drainage in Iowa’s Subsurface Drained Landscapes
(American Society of Civil Engineers, 2009)The study presents hydrologic simulations assessing the potential impact of climate change on subsurface drainage and its pattern in Iowa’s subsurface drained landscapes. The contemporary (representing the decade of 1990s) ... -
Forecasting Weekly Evapotranspiration with ARIMA and Artificial Neural Network Models
(American Society of Civil Engineers, 2009)Information about the parameters defining water resources availability is a key factor in their management. Reference evapotranspiration -
Evaluation of Water Retention Functions and Computer Program “Rosetta” in Predicting Soil Water Characteristics of Seasonally Impounded Shrink–Swell Soils
(American Society of Civil Engineers, 2009)Soil water retention is a critical factor influencing irrigation decisions and hence agricultural crop yields. However, information on soil water retention characteristics (SWRC) is seldom available for irrigation planning, ... -
Decision Support System for Surface Irrigation Design
(American Society of Civil Engineers, 2009)The SADREG decision support system was developed to help decision makers in the process of design and selection of farm surface irrigation systems to respond to requirements of modernization of surface irrigation—furrow, ... -
Field Study of the Ability of Two Grassed Bioretention Cells to Reduce Storm-Water Runoff Pollution
(American Society of Civil Engineers, 2009)Two grassed bioretention cells including internal storage zones (ISZs) were monitored for -
Estimating Reference Crop Evapotranspiration with ETgages
(American Society of Civil Engineers, 2009)Three years of daily reference evapotranspiration measured by atmometers -
Generalized Numerical Solution for Detention Basin Design
(American Society of Civil Engineers, 2009)A particularly useful generalized numerical solution for detention basin design is presented and sets the stage for practical applications for roof detention and the rationale and use of such a solution for detention basin ... -
Turbulence Modeling of Flows over Circular Spillways
(American Society of Civil Engineers, 2009)To predict the characteristics of flows over circular spillways, a turbulence model based on the Reynolds stress model (RSM) is presented. Circular spillways are used to regulate water levels in reservoirs. The flow over ... -
Modified Form of the Extended Kostiakov Equation Including Various Initial and Boundary Conditions
(American Society of Civil Engineers, 2009)The extended Kostiakov equation is intensively used in surface irrigation applications. Traditionally, the extended Kostiakov infiltration formula is calibrated for specific field conditions. However, there is a dependence ... -
Applying MODFLOW Model for Drainage Problem Solution: A Case Study from Jahir Irrigated Fields, Israel
(American Society of Civil Engineers, 2009)High water table and soil salinization processes are common in irrigated fields in Israel. Subsurface drainage systems are a common technique to solve soil salinity problems. Subsurface drainage models can contribute to ... -
Improved Channel Cross Section with Two-Segment Parabolic Sides and Horizontal Bottom
(American Society of Civil Engineers, 2009)A channel cross section with parabolic sides and horizontal bottom has been recently published and proved to be more economical (provide lesser construction cost per unit length) than the trapezoidal cross section. This ... -
Actual and Reference Evaporative Losses and Surface Coefficients of a Maize Field during Nongrowing (Dormant) Periods
(American Society of Civil Engineers, 2009)Effective water resources planning, allocation, management, and use in agroecosystems require accurate quantification of actual evapotranspiration -
Relationship between the Storage Coefficient and the Soil-Water Retention Curve in Subsurface Agricultural Drainage Systems: Water Table Drawdown
(American Society of Civil Engineers, 2009)Water dynamics in subsurface agricultural drainage systems are described by the Boussinesq equation for an unconfined aquifer that results from the continuity equation, the Darcy law, as well as from a hydrostatic pressure ... -
Discussion of “Optimizing Aquifer Parameters from Drawdowns in Large Diameter Wells” by Sushil K. Singh
(American Society of Civil Engineers, 2009)