Influence of Regulators in Controlling Upstream Water Depth
Publication: Journal of Irrigation and Drainage Engineering
Volume 137, Issue 9
Abstract
Control of irrigation canals usually consists of control of water levels upstream from regulators or check structures. Regulators provide the necessary head to offtakes. Generally, influence factor is used to express the extension of the backwater curve effect within the controlled reach. This factor shows how a change in water depth exercised by a regulator can influence the water surface profile along an irrigation canal. No direct equation is available in the technical literature up until now for calculating this factor on the basis of the steady gradually varied flow theorem. In current research, using the steady gradually varied flow equation for a prismatic canal, an elegant algebraic equation for this factor is derived. Control of water levels upstream from regulators is an important application of this equation in irrigation networks.
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Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 137 • Issue 9 • September 2011
Pages: 620 - 623
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Sep 29, 2009
Accepted: Jan 21, 2011
Published online: Jan 24, 2011
Published in print: Sep 1, 2011
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