Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 3441-3460 of 3826
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Editorial
(American Society of Civil Engineers, 1990) -
Management Model for Control of On‐Farm Irrigation
(American Society of Civil Engineers, 1989)A physically based model for the management and forecasting of irrigation water requirements at an on‐farm level is developed. The model includes mechanisms for simulating root and soil‐water movement, root growth, and ... -
Shooting Method for Saint Venant Equations of Furrow Irrigation
(American Society of Civil Engineers, 1990)Flow in surface irrigation is subcritical and downstream conditions can propagate upstream. The shooting or initial‐value method started from the downstream end and proceeded upstream against the flow. Saint Venant ... -
Finite Difference Solution of Boussinesq Unsteady‐State Equation for Highly Sloping Lands
(American Society of Civil Engineers, 1990)Various analytical and numerical solutions are available for the steady‐state form of Boussinesq's equation describing the phreatic surface on sloping lands. Except for the experimental results of Luthin and Guitjens (1967), ... -
Discussion of “<i>Adjusted F Factor for Multiple‐Outlet Pipes</i>” by Edmar José Scaloppi (February, 1988, Col. 114, NO. 1)
(American Society of Civil Engineers, 1990) -
Analytical Model for Border Irrigation
(American Society of Civil Engineers, 1989)This study develops a simple analytical model, using the volume balance approach, to simulate all phases of border irrigation. The surface and subsurface flow profiles in the advance phase are assumed to be of parabolic ... -
Irrigation Scheduling Model with Groundwater and Limited Rooting
(American Society of Civil Engineers, 1989)An irrigation‐scheduling model was developed based on soil‐water budgeting, which incorporates the contribution of shallow‐groundwater tables (GWT) to crop‐water use and the effects of soil restrictions on crop rooting. ... -
DYN2 Method for Optimal Control of Water Flow in Open Channels
(American Society of Civil Engineers, 1989)A new method for the optimal real‐time control of water transport in open channels, called -
Guidelines for Rehabilitation of Drainlines Crossed by Pipelines
(American Society of Civil Engineers, 1990)The paper presents guidelines that are designed to aid in the correct and successful crossing of drainline systems that are intersected by pipeline construction. The paper covers procedures, considerations, general criteria, ... -
Several Sources of Nonuniformity in Irrigation Delivery Flows
(American Society of Civil Engineers, 1989)A lateral canal in a southwestern U.S. irrigation district was instrumented for continuous monitoring. Deliveries were flexibly scheduled; farmers arranged timing, rate, and duration with the district. The distribution of ... -
Evapotranspiration in Sudan Gezira Irrigation Scheme
(American Society of Civil Engineers, 1989)Rapid irrigation development in the Sudan has stretched to the limit its share in the Nile waters. Significant savings on irrigation water can be made by improved water management. Accurate estimation of crops evapotranspiration, -
Discussion of “<i>Hydraulic Friction Factors for Pipe Flow</i>” by Fadi Z. Kamand (May, 1988, Vol. 114, No. 2)
(American Society of Civil Engineers, 1989) -
Editor's Page
(American Society of Civil Engineers, 1989) -
River Quality Modeling: Frequency Domain Approach
(American Society of Civil Engineers, 1989)Complete and equally spaced river quality variables specific conductance ( -
Accuracy of Estimated Reference Crop Evapotranspiration
(American Society of Civil Engineers, 1989)Evapotranspiration from cool‐season grasses is used as the reference for -
Irrigation in Nepal: Opportunities and Constraints
(American Society of Civil Engineers, 1989)Agriculture accounts for nearly two‐thirds of the gross domestic product of Nepal, one of the least developed countries of the world. Thus, irrigation is important to sustaining the country's economy. While irrigation has ... -
Inverted V‐Notch: Practical Proportional Weir
(American Society of Civil Engineers, 1989)This paper presents a practical linear proportional weir of simple geometric shape in the form of an inverted V‐notch or inward trapezium. The flow through this weir, of half‐width -
Discussion of “<i>Alternative Metric Units for Acre‐Foot and Acre‐Inch</i>” by M.‐L. Quinn (August, 1987, Vol. 113, No. 3)
(American Society of Civil Engineers, 1989) -
Discussion of “<i>Venturi Flume of Minimum Space Requirements</i>” by Willi H. Hager (May, 1988, Vol. 114, No. 2)
(American Society of Civil Engineers, 1989) -
Discussion of “<i>Alternative Metric Units for Acre‐Foot and Acre‐Inch</i>” by M.‐L. Quinn (August, 1987, Vol. 113, No. 3)
(American Society of Civil Engineers, 1989)