Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 3801-3820 of 3826
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Discussion of “<i>The V‐Shaped Broad‐Crested Weir</i>” by Wubbo Boiten and Remmet H. Pitlo (June, 1982)
(American Society of Civil Engineers, 1983) -
Closure to “<i>Volume‐Accuracy Relationship in Soil Moisture Sampling</i>” by Mark. E. Hawley, Richard H. McCuen, and Thomas J. Jackson (March, 1982)
(American Society of Civil Engineers, 1983) -
Drought Analysis and Soil Moisture Prediction
(American Society of Civil Engineers, 1983)Soil moisture levels are predicted by a simple, conceptual accounting model run with daily rainfall and evaporation inputs. Model output is used to illustrate practical statistical procedures for drought frequency, duration ... -
Discussion of “<i>Application of Penman Equation Wind Function</i>” by Richard H. Cuenca and Martin T. Nicholson (March, 1982)
(American Society of Civil Engineers, 1983) -
Optimum Moisture Content for Compacting Soils: One‐Point Method
(American Society of Civil Engineers, 1983)A one‐point method for finding out Proctor Standard compacted maximum dry density and optimum moisture content of cohesive soils has been developed. It omits the usual laborious procedure of compaction test and requires ... -
Estimation of FAO Evapotranspiration Coefficients
(American Society of Civil Engineers, 1983)The estimation, by computers, of correction coefficients for the United Nations Food and Agriculture Organization (FAO) evapotranspiration computation method had required a ``table lookup'' process involving arrays of up ... -
Traveling Velocity of Movable Frontal Lateral
(American Society of Civil Engineers, 1983)Irrigation machines are becoming popular as a means of solving the problem of water and labor shortage in irrigation. Irrigation efficiency is also improved by the implementation of irrigation machines. A universal nomogram ... -
Saline Water Use Prospects: Colorado River
(American Society of Civil Engineers, 1983)New opportunities for salinity control are under intensive study by the U.S. Bureau of Reclamation. Plans to use saline water for powerplant cooling and coal transport appear promising. Preliminary cost‐effectiveness ... -
Head Loss at Soil‐Drain Envelope Interfaces
(American Society of Civil Engineers, 1983)Hydraulic gradients at exits from porous media are greater than those predicted by laminar flow theory. Exit gradient effects project into the soil away from the exit interface in the manner of a backwater curve. Head ... -
Ground‐Water Mounding Due to On‐Site Sewage Disposal
(American Society of Civil Engineers, 1983)Localized ground‐water mounding beneath larger on‐site sewage disposal fields (leach fields) may be a major problem which previously had not been adequately addressed. Existing methods to predict mounding, mainly developed ... -
Upper Limit Lognormal Distribution for Drop Size Data
(American Society of Civil Engineers, 1983)The upper limit lognormal (ULLN) distribution is a three‐parameter family of curves that offers two significant features to models of size frequency data: they have finite maxima and their shape ranges from symmetric to ... -
Computer Control for Irrigation‐canal System
(American Society of Civil Engineers, 1983)The objective of the development work was to develop an algorithm for the computerized control of an open‐channel water distribution system that would allow the system to be operated on a demand basis rather than on a ... -
Evaporation Reduction: Summary of Long‐term Tank Studies
(American Society of Civil Engineers, 1983)A review of evaporation reduction studies indicated that shades suspended above a water surface and floating covers on a water surface gave best results. Of the two, floating covers were most practical. Field tests using ... -
Land Consolidation in Irrigation Projects
(American Society of Civil Engineers, 1983)A model for land consolidation and the layout of irrigation systems was developed in Morocco about 20 yr ago and has been used widely there ever since. Known as the “rational layout” scheme, this approach facilitates modern ... -
Measurement Device Effect on Channel Water Loss
(American Society of Civil Engineers, 1983)Flow measurement devices can cause significant errors in inflowoutflow channel water loss measurements. The device effects, caused by the increased water surface elevation upstream of a device, must be subtracted from ... -
Desing of Energy-Efficient Pipe-Size Expansion
(American Society of Civil Engineers, 1983)Fluid flow is analyzed through a two‐stage conical diffuser used to reduce the velocity of pipe flow. An analytical approach is described for determining the optimum diameter at the interface between the first stage, a ... -
Discussion of “<i>Simplified Method for Rainfall Intensities</i>” by George H. Hargreaves (September, 1981)
(American Society of Civil Engineers, 1983) -
Erratum: “Application of Penman Equation Wind Function” by Richard H. Cuenca and Martin T. Nicholson (March, 1982)
(American Society of Civil Engineers, 1983) -
Closure to “<i>Development of Solutions for Level‐Basin Design</i>” by Albert J. Clemmens, Theodor Strelkoff, and Allen R. Dedrick (September, 1981)
(American Society of Civil Engineers, 1983) -
Guidelines for Cloud Seeding to Augment Precipitation
(American Society of Civil Engineers, 1983)Preparation of guidelines for cloud seeding was initiated by the ASCE Weather Modification Committee and is authored by a group of six experts in the field of weather modification. It is designed to give guidance to water ...