Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 1621-1640 of 3826
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Dynamics of Nocturnal, Daytime, and Sum-of-Hourly Evapotranspiration and Other Surface Energy Fluxes over Nonstressed Maize Canopy
(American Society of Civil Engineers, 2011)The magnitude and driving forces of nocturnal evaporative losses, -
Use of Stable Isotopes Deuterium and Oxygen-18 to Derive Evaporation from Flood Irrigation on the Basis of Pan Evaporation Techniques
(American Society of Civil Engineers, 2011)The loss of water to the atmosphere during flood irrigation occurs through evaporation and transpiration. Whereas transpiration can be estimated through the FAO56 methodology, actual evaporation is difficult to quantify ... -
Experimental Investigation of the Outflow Process over a Triangular Labyrinth-Weir
(American Society of Civil Engineers, 2012)In this paper, the outflow process from a sharp-crested triangular labyrinth weir is studied. Applying dimensional analysis and the -
Applying Water-Level Difference Control to Central Arizona Project
(American Society of Civil Engineers, 2011)The Central Arizona Project (CAP) has been supplying Colorado River water to Central Arizona for roughly 25 years. The CAP canal is operated remotely with a supervisory control and data acquisition (SCADA) system. Gate-position ... -
Closure to “Discharge Capacity of Labyrinth Side Weir Located on a Straight Channel” by M. Emin Emiroglu, Nihat Kaya, and Hayrullah Agaccioglu
(American Society of Civil Engineers, 2011) -
Use of Alternative Temperature Expressions with Blaney-Criddle
(American Society of Civil Engineers, 2011)The widely used Penman-Monteith equation to estimate crop evapotranspiration (ET) has limited utility in many areas of the world because of its requirement for full meteorological data. Legal and engineering water agencies ... -
Estimating Evapotranspiration by Using Atmometers for Irrigation Scheduling in a Humid Environment
(American Society of Civil Engineers, 2011)Evapotranspiration data from three commercial atmometers ( -
Discussion of “Energy and Momentum Velocity Coefficients for Calibrating Submerged Sluice Gates in Irrigation Canals” by Oscar Castro-Orgaz, David Lozano, and Luciano Mateos
(American Society of Civil Engineers, 2012) -
Parshall Flume Discharge Corrections: Wall Staff Gauge and Centerline Measurements
(American Society of Civil Engineers, 2011)Parshall flumes were developed in the early 1900s as a simple and inexpensive way to provide accurate flow measurement in open channels. Unfortunately, many Parshall flumes in use today do not follow essential design ... -
Reference Curve Numbers and Behavior for Sugarcane on Highly Weathered Tropical Soils
(American Society of Civil Engineers, 2011)This work examines rainfall-runoff behavior and determines the reference curve numbers (CNs) on a highly weathered tropical clayey soil (Oxisol, or “latosol”) in Brazil for three conditions: (1) bare soil; (2) sugarcane ... -
Impact of Shallow Groundwater on Evapotranspiration Losses from Uncultivated Land in an Irrigated River Valley
(American Society of Civil Engineers, 2011)In many agricultural regions of the West, decades of intensive irrigation have produced shallow water tables under not only cultivated fields but also the nearby uncultivated land. It is possible that the high water tables ... -
Discussion of “Iterative Formulas and Estimation Formulas for Computing Normal Depth of Horseshoe Cross-Section Tunnel” by Jiliang Liu, Zhengzhong Wang, and Xing Fang
(American Society of Civil Engineers, 2012) -
Critical Channel Dimensions for Open-Channel Transition Design
(American Society of Civil Engineers, 2011)The channel dimensions leading to the critical state of flow are important in the design of channel transition. This work describes a methodology for determining the channel dimensions leading to the critical state of flow ... -
Theoretical Determination of Sequent Depths in Closed Conduits
(American Society of Civil Engineers, 2011)To predict hydraulic jump characteristics for channel design, jump height may be determined by calculating the subcritical sequent depth from momentum theory. In closed conduits, however, a hydraulic jump may fill the ... -
Discussion of “Energy and Momentum Velocity Coefficients for Calibrating Submerged Sluice Gates in Irrigation Canals” by Oscar Castro-Orgaz, David Lozano, and Luciano Mateos
(American Society of Civil Engineers, 2012) -
Daily Evapotranspiration Modeling from Limited Weather Data by Using Neuro-Fuzzy Computing Technique
(American Society of Civil Engineers, 2012)Evapotranspiration is an integral part of the hydrologic cycle and an important component in water resource development and management, especially in the arid and semiarid conditions such as those found in Iran in which ... -
Determining Air Demand for Small- to Medium-Sized Embankment Dam Low-Level Outlet Works
(American Society of Civil Engineers, 2011)Air vents in low-level outlet works are installed downstream of control gates or valves to mitigate subatmospheric pressures locally and reduce the potential for damaging cavitation. Published air-vent-sizing methods, which ... -
Influence of Regulators in Controlling Upstream Water Depth
(American Society of Civil Engineers, 2011)Control of irrigation canals usually consists of control of water levels upstream from regulators or check structures. Regulators provide the necessary head to offtakes. Generally, influence factor is used to express the ... -
Estimating Solar Radiation from Temperature with Spatial and Temporal Calibration
(American Society of Civil Engineers, 2011)A procedure is introduced to estimate daily solar radiation from maximum and minimum temperatures for areas where solar radiation is either unavailable or unreliable. The procedure uses historical temperature data for ... -
Modeling Reference Evapotranspiration Using Evolutionary Neural Networks
(American Society of Civil Engineers, 2011)The ability of evolutionary neural networks (ENN) to model reference evapotranspiration (