Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 2361-2380 of 3826
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Hydraulic Modeling of an Automatic Upstream Water-Level Control Gate
(American Society of Civil Engineers, 2005)This paper proposes an efficient mathematical model of an automatic upstream water-level control gate, called a Begemann or flap gate. This automatic gate controls the upstream level close to a reference level for free ... -
Agroecological Impacts from Salinization and Waterlogging in an Irrigated River Valley
(American Society of Civil Engineers, 2005)Extensive field data and calibrated flow and salt-transport models characterize the spatial and temporal patterns of salinity and waterlogging in an irrigated western river valley. Over three irrigation seasons, average ... -
Comparison of Some Reference Evapotranspiration Equations for California
(American Society of Civil Engineers, 2005)Four reference evapotranspiration (ETo) equations are compared using weather data from 37 agricultural weather stations across the state of California. The equations compared include the California Irrigation Management ... -
Evaporation Research: Review and Interpretation
(American Society of Civil Engineers, 2005)Literature regarding evaporation from soil, wet plant surfaces, and sprinkler droplets was examined, normalized, and interpreted. Much of the evaporation literature is difficult to compare and interpret; this paper offers ... -
<i>FAO-56</i> Dual Crop Coefficient Method for Estimating Evaporation from Soil and Application Extensions
(American Society of Civil Engineers, 2005)Crop coefficient curves provide simple, reproducible means to estimate crop evapotranspiration (ET) from weather-based reference ET values. The dual crop coefficient -
Satellite-Based Energy Balance to Assess Within-Population Variance of Crop Coefficient Curves
(American Society of Civil Engineers, 2005)Quantifying evapotranspiration (ET) from agricultural fields is important for field water management, water resources planning, and water regulation. Traditionally, ET from agricultural fields has been estimated by multiplying ... -
Prediction Accuracy for Projectwide Evapotranspiration Using Crop Coefficients and Reference Evapotranspiration
(American Society of Civil Engineers, 2005)The Imperial Irrigation District is a large irrigation project in the western United States having a unique hydrogeologic structure such that only small amounts of deep percolation leave the project directly as subsurface ... -
Comparison of Measured and FAO-56 Modeled Evaporation from Bare Soil
(American Society of Civil Engineers, 2005)This paper evaluates how well the FAO-56 style soil water evaporation model simulates measurements of evaporation -
SEBAL Model with Remotely Sensed Data to Improve Water-Resources Management under Actual Field Conditions
(American Society of Civil Engineers, 2005)Water management emphasis tends to shift from supply augmentation to limiting water consumption. Spatio-temporal information on actual evapotranspiration (ET) helps users to better understand evaporative depletion and to ... -
Coupled Crop and Solid Set Sprinkler Simulation Model. I: Model Development
(American Society of Civil Engineers, 2004)The development of a coupled crop model ( -
Application of Conditioner Solution by Subsurface Emitters for Stabilizing the Surrounding Soil
(American Society of Civil Engineers, 2004)Poor uniformity of water application by subsurface drip irrigation has been examined and some explanations are suggested in this paper. Use of soil conditioners for soil structure stabilization around subsurface drip ... -
Reviewers
(American Society of Civil Engineers, 2004) -
Economic Design of Center-Pivot Sprinkler Laterals
(American Society of Civil Engineers, 2004)Center-pivot laterals are characterized by important friction loss, so therefore the energy consumption is also significant. In this paper, a new, particularly simple, equation is derived to solve explicitly the economic ... -
Exact Solutions for Sequent Depths Problem
(American Society of Civil Engineers, 2004)Design of a stilling basin downstream of a barrage requires knowledge of various elements of hydraulic jump with known values such as the discharge and the energy lost in the jump. The problem reduces to solution of the ... -
Coupled Crop and Solid Set Sprinkler Simulation Model. II: Model Application
(American Society of Civil Engineers, 2004)In this work, applications of the coupled solid set sprinkler irrigation and crop model AdorSim introduced in the companion paper are presented. The sprinkler irrigation model is based on ballistic theory, while the crop ... -
Determination of Length of a Horizontal Drain in Homogeneous Earth Dams
(American Society of Civil Engineers, 2004)An earth dam can be prevented from a seepage failure due to softening of the downstream slope by providing a rock toe or horizontal drainage blanket. Analytical solutions are not available for determining the length of the ... -
Hydraulics of Rectangular Dropshafts
(American Society of Civil Engineers, 2004)A dropshaft is an energy dissipator connecting two channels with a drop in invert elevation. The hydraulics of vertical rectangular shafts was systematically investigated in seven configurations. A particular emphasis was ... -
Estimating Evaporation from Bare Soil and the Crop Coefficient for the Initial Period Using Common Soils Information
(American Society of Civil Engineers, 2005)The crop coefficient during the initial period -
Spatial Distribution of Ions in Groundwater under Agricultural Land
(American Society of Civil Engineers, 2004)This study investigated the characteristics of shallow groundwater quality under agricultural areas dominated by rice paddy fields, vegetable fields, and a residential zone on an alluvial basin by examining spatial ... -
Seepage from Lined Canal Using Finite-Element Method
(American Society of Civil Engineers, 2004)The problem of steady-state seepage from a lined canal toward asymmetrical drainages has been solved using the finite-element method, analyzing the effect of canal lining on canal seepage discharge. Studies show that the ...