NDLI: Numerical Solution of 2D Free Surface to Ditch Drains in Presence of Transient Recharge and Depth-Dependent ET in Sloping Aquifer

Content Provider	Springer Nature Link
Author	Singh, Surjeet Jaiswal, C. S.
Copyright Year	2006
Abstract	Water table variations between drains have been investigated by various researchers in response to transient recharge. Recent studies have shown the importance of incorporating the effect of evapotranspiration (ET) in the design of subsurface drainage systems. In arid and semi-arid regions, ET plays a crucial role in lowering the water table resulting in increased drain spacing. In this paper, a numerical solution of two-dimensional free surface flow to ditch drains is presented in presence of transient recharge and depth-dependent ET from land surface for an aquifer with sloping impermeable base. The midpoint water table variations obtained from the proposed solution compare well with experimental results as well as already existing mathematical solution. When ET from the land surface is taken into account in combination with recharge, the model results can provide accurate and reliable estimates of water table fluctuation under complex situations, which are highly related to the hydrology of waterlogged and saline soils.
Starting Page	779
Ending Page	793
Page Count	15
File Format	PDF
ISSN	09204741
Journal	Water Resources Management
Volume Number	20
Issue Number	5
e-ISSN	15731650
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-06-29
Publisher Institution	European Water Resources Association (EWRA)
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	drainage recharge ET finite-difference Environment Civil Engineering Geotechnical Engineering Meteorology/Climatology Hydrogeology
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Civil and Structural Engineering

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