Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 3201-3220 of 3826
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Participative Process in Tube Well Irrigation Development
(American Society of Civil Engineers, 1992)Farmer participation in the development of their irrigation systems promises greater farmer satisfaction with the system. It also relieves government of the administrative and cost burden associated with the operation and ... -
Velocity Distribution Inside and Above Branched Flexible Roughness
(American Society of Civil Engineers, 1992)The purpose of this study is to develop function relationships for the velocity distribution of water flow in and above a model of branched grass. A trapezoidal cross‐section flume is constructed for this study, and branched ... -
Closure to “<i>Normal‐Depth Calculations in Complex Channel Sections</i>” by Edward D. Shirley and Vicente L. Lopes (March/April, 1991, Vol. 117, No. 2)
(American Society of Civil Engineers, 1992) -
Discussion of “<i>Local Scour Downstream of Box‐Culvert Outlets</i>” by H. Abida and R. D. Townsend (May/June, 1991, Vol. 117, No. 3)
(American Society of Civil Engineers, 1992) -
Closure to “<i>Drop Manholes in Supercritical Pipelines</i>” by George C. Christodoulou (January/February, 1991 Col. 117, No. 1)
(American Society of Civil Engineers, 1992) -
Discussion of “<i>Irrigation Uniformity Relationships for Irrigation System Management</i>” by Albert J. Clemmens (September/October, 1991, Vol. 117, No. 5)
(American Society of Civil Engineers, 1992) -
Closure to “<i>Overseas Perspectives for Managing Irrigation Drainage in California</i>” by Emery M. Roe (May/June, 1991, Vol. 117, No. 3)
(American Society of Civil Engineers, 1992) -
Discussion of “<i>Fractal Concept Used in Time‐of‐Concentration Estimates</i>” by Gert Aron, James E. Ball, and Thomas A. Smith (September/October, 1991, Vol. 117, No. 5)
(American Society of Civil Engineers, 1992) -
Discussion of “<i>Normal‐Depth Calculations in Complex Channel Sections</i>” by Edward D. Shirley and Vicente L. Lopes (March/April, 1991, Vol. 117, No. 2)
(American Society of Civil Engineers, 1992) -
Closure to “<i>Fractal Concept Used in Time‐of‐Concentration Estimates</i>” by Gert Aron, James E. Ball, and Thomas A. Smith (September/October, 1991, Vol. 117, No. 5)
(American Society of Civil Engineers, 1992) -
Discussion of “<i>Drop Manholes in Supercritical Pipelines</i>” by George C. Christodoulou (January/February, 1991 Col. 117, No. 1)
(American Society of Civil Engineers, 1992) -
Erratum: “Optimum Center‐Pivot Irrigation System Design with Tillage Effects” by Y. Mohamoud, Thomas R. McCarty, and Loyd K. Ewing (March/April, 1992, Vol. 118, No. 2)
(American Society of Civil Engineers, 1992) -
Modern Approach to Design of Grassed Channels
(American Society of Civil Engineers, 1992)The resistance to flow in a grassed channel is linked directly to the relative roughness of the flow through long‐accepted boundary‐layer principles. The difference between flow over grass linings and linings composed of ... -
Including Uncertainty of Hydraulic Conductivity into Drainage Design
(American Society of Civil Engineers, 1992)Hydraulic conductivity is one of the most important factors controlling water‐table depth in subsurface drained agricultural land. The current design procedure is to calculate lateral drain spacing using some average of ... -
Two‐Dimensional Analysis of Furrow Infiltration
(American Society of Civil Engineers, 1992)A recently developed two‐dimensional finite element transient water‐flow model was used to simulate infiltration by furrow irrigation with a shallow water table. Suggested applications are primarily those that focus on ... -
Horton Infiltration Equation Revisited
(American Society of Civil Engineers, 1992)The original Horton equation is valid only if the rate of rainfall is always higher than the infiltration capacity of the soil throughout a rainfall-infiltration process. This technical note presents a modified Horton ... -
Hydraulic Roughness Coefficients for Native Rangelands
(American Society of Civil Engineers, 1992)A subfactor‐based regression technique for estimating hydraulic roughness coefficients for shallow overland flow was developed from simulated rainfall/runoff plots originally collected for erosion studies. The data were ... -
Vadose Zone Composite Hydraulic Conductivity
(American Society of Civil Engineers, 1992)Grid networks, consisting of nodes and line elements, are often used in porous media flow simulation. An important step in the simulation process is the quantification of the line element conductivity when the pressure or ... -
Effects of Drainage and Water‐Management Practices on Hydrology
(American Society of Civil Engineers, 1992)The hydrology of two North Carolina muck soils was simulated using four water‐management methods; conventional drainage, improved subsurface drainage, and two types of controlled drainage. One soil was much more responsive ... -
Cost Models for Preliminary Economic Evaluation of Sprinkler Irrigation Systems
(American Society of Civil Engineers, 1992)Cost models that provide a preliminary evaluation of the economic feasibility of portable pipe, traveling gun, and center‐pivot irrigation systems on a site‐specific basis are presented. The models require limited input ...