Design of Irrigation Canals: Integrated Approach
Publication: Journal of Irrigation and Drainage Engineering
Volume 117, Issue 6
Abstract
A design methodology is developed to obtain the least‐cost design of irrigation canals. The proposed methodology incorporates elements of the water section and the above‐water section, and is applicable to both lined and unlined canals. Every reach of the canal is described by four basic design variables; bed slope, bed width, upstream bed level, and upstream berm level. A systematic procedure is used to generate design alternatives covering the solution domain. Only those alternatives satisfying a group of preset functional, hydraulic, operational, maintenance, and construction constraints are considered feasible, and are screened to find the least cost. The total cost included the cost of earthwork, lining and trimming (if any), control structures, land acquisition, operation, and maintenance. A detailed cost model is used to estimate the earthwork cost taking into account excavation, deposition, haulage, and soil import or export. The usefulness of the proposed methodology is demonstrated through its application to a reach of El‐Nasr Canal, a recently constructed main lined carrier in Egypt.
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Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 117 • Issue 6 • November 1991
Pages: 852 - 869
Copyright
Copyright © 1991 ASCE.
History
Published online: Nov 1, 1991
Published in print: Nov 1991
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