Discharge Formulas for Subsurface Drainage of Retention Pond
Publication: Journal of Irrigation and Drainage Engineering
Volume 136, Issue 3
Abstract
Excessive runoff and its undesirable effects (erosion, siltation, and suspended load), as well as water quality degradation in agricultural landscapes, are recurrent concerns in France. Special sediment control or pollution mitigation basins can consist of agricultural fields simultaneously ponded and subsurface drained. After having identified convenient nondimensional parameters for system description, two hydraulic methods for flow modeling and empiric design formulas are presented in this technical note for the evaluation of adequate water filtration flow rates through such remediation devices, under given hydraulic head conditions. The first method is an analytical one with an infinite soil domain and the second is a numerical one limited to the vicinity of the ponded zone. For engineering purposes, discharge capacity is given as a function of the number of drains as well as drain spacing, radius, and depth.
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Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 136 • Issue 3 • March 2010
Pages: 210 - 213
Copyright
© 2010 ASCE.
History
Received: May 21, 2008
Accepted: Aug 3, 2009
Published online: Aug 6, 2009
Published in print: Mar 2010
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