Discharge Formulas for Subsurface Drainage of Retention Pond

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 a...

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Bibliographic Details
Published in:Journal of irrigation and drainage engineering 2010-03, Vol.136 (3), p.210-213
Main Authors: Nédélec, Yves, Ouvry, Jean-François, Henine, Hocine, Tournebize, Julien
Format: Article
Language:English
Subjects:
Agricultural and forest climatology and meteorology. Irrigation. Drainage
agricultural runoff
Agronomy. Soil science and plant productions
Biological and medical sciences
Environmental Sciences
equations
Fundamental and applied biological sciences. Psychology
General agronomy. Plant production
grasslands
hydrologic models
Irrigation. Drainage
pollution control
ponds
soil erosion
subsurface drainage
TECHNICAL NOTES
water flow
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Summary: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.
ISSN:0733-9437
1943-4774
DOI:10.1061/(ASCE)IR.1943-4774.0000151