Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 3021-3040 of 3826
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Pretreatment of Secondary Effluent for Drip Irrigation
(American Society of Civil Engineers, 1994)A pilot‐scale treatment system, for developing drip‐irrigation pretreatment criteria, was designed, installed, and operated intermittently over 5,300 h using activated sludge secondary effluent. Principal unit processes ... -
Erratum:
(American Society of Civil Engineers, 1994) -
Side‐Weir Analysis Using Elementary Discharge Coefficient
(American Society of Civil Engineers, 1994)A side weir is a flow diversion device, which is widely used in irrigation as a head regulator of distributaries and escapes. This paper presents a concept for an elementary discharge coefficient that is related to the ... -
Unsteady Drainage with Variable Drainage Porosity
(American Society of Civil Engineers, 1994)Presently available solutions of the one‐dimensional unsteady‐state ground‐water flow equation (Boussinesq equation) have been obtained by treating the drainable porosity -
Non‐steady‐Flow Type Curves for Strip Aquifers with Constant Drawdown
(American Society of Civil Engineers, 1994)A type‐curve method to determine aquifer parameters from a constant‐drawdown test at a drain in a finite strip aquifer is described. An available solution in the form of complementary error functions to one‐dimensional, ... -
Effects of Air Compression and Counterflow on Infiltration into Soils
(American Society of Civil Engineers, 1994)Infiltration into soils is affected by several factors, including the soil‐air pressure. Soil air may become compressed between a confining layer (water table) and a nearly saturated surface soil. Compressed and counterflowing ... -
Closure to “Measuring Water in Trapezoidal Canals” by Zohrab Samani and Henry Magallanez (January/February, 1993, Vol. 119, No. 1)
(American Society of Civil Engineers, 1994) -
Closure to “Momentum Model for Flow Past Weir” by Amruthur S. Ramamurthy, Ngoc‐Diep Vo, and German Vera (November/December, 1992, Vol. 118, No. 6)
(American Society of Civil Engineers, 1994) -
Discussion of “Horton Infiltration Equation Revisited” by A. Osman Akan (September/October, 1992, Vol. 118, No. 5)
(American Society of Civil Engineers, 1994) -
Discussion of “Horton Infiltration Equation Revisited” by A. Osman Akan (September/October, 1992, Vol. 118, No. 5)
(American Society of Civil Engineers, 1994) -
Correction for Settlement in Submerged Parshall Flumes
(American Society of Civil Engineers, 1994)A commercially available 30.5‐cm (1‐ft) Parshall flume was installed in the recirculating flume in the hydraulic laboratory of Colorado State University and tested for lateral‐slope or cross‐slope settlement. A series of ... -
Discussion of “Momentum Model for Flow Past Weir” by Amruthur S. Ramamurthy, Ngoc‐Diep Vo, and German Vera (November/December, 1992, Vol. 118, No. 6)
(American Society of Civil Engineers, 1994) -
Closure to “Step‐Function Response of Muskingum Reach” by J. C. I. Dooge, M. Perumal, and Q. J. Wang (March/April, 1993, Vol. 119, No. 2)
(American Society of Civil Engineers, 1994) -
Discussion of “Measuring Water in Trapezoidal Canals” by Zohrab Samani and Henry Magallanez (January/February, 1993, Vol. 119, No. 1)
(American Society of Civil Engineers, 1994) -
Closure to “Horton Infiltration Equation Revisited” by A. Osman Akan (September/October, 1992, Vol. 118, No. 5)
(American Society of Civil Engineers, 1994) -
Discussion of “Step‐Function Response of Muskingum Reach” by J. C. I. Dooge, M. Perumal, and Q. J. Wang (March/April, 1993, Vol. 119, No. 2)
(American Society of Civil Engineers, 1994) -
Herbicide Leaching in Coastal Plain Soil
(American Society of Civil Engineers, 1994)The movement of atrazine, simazine, cyanazine, and metolachlor was studied for two years under conventional tillage and no‐tillage corn. Ground water and soil samples were analyzed for the herbicides. Atrazine and simazine ... -
Nonlinear Regression Applied to Hydrologic Data
(American Society of Civil Engineers, 1994)An overview of nonlinear regression is presented based on the concept of model linearization and use of successive approximations in order to minimize the sum of squared residuals. The Marquardt method is proposed as a ... -
Sediment and Debris Removal Inlet Structure for Canal Pipelines
(American Society of Civil Engineers, 1994)New underground pipelines, which replaced open‐channel canals in the Duchesne River area of northeastern Utah, provided the necessary water pressure for local farmers in this arid region to switch to sprinkler irrigation ... -
Practical Constant‐Accuracy Linear Weir
(American Society of Civil Engineers, 1994)This paper is concerned with the modifications of the Extended Bell‐mouth Weir (EBM weir) earlier designed by Keshava Murthy. It is shown that by providing inclined sides (equivalent to providing an inward‐trapezoidal ...