Subscription or Fee Access
Effect of Head Build-Up and Seepage on the Water Table Fluctuation in a Semi-Confined Aquifer
In semi-confined leaky aquifers, occurrence of vertical seepage from the confining layer is common. Due to which water table rises in the overlying unconfined aquifer and creates water logging problem. The problem aggravates when recharge from rainfall, irrigation return flow and recharge from uplands also occurs. Thus, in the present study, an analytical solution has been presented to study the water table fluctuation in a semi-confined aquifer subjected to upward seepage and constant recharge from the land surface. The analytical solution will be helpful in controlling the rise of water table due to flow convergence and to avoid the water logging. The validity of the proposed analytical solution has been established by comparing with already existing mathematical solution. The results of the proposed solution have been presented to show the effect of piezometric head, resistance of the confining layer, drainable porosity and head build up above the drains due to convergence of flow on the water table rise. A rise of 0.30 m head above the drains causes 0.21 m corresponding rise in the water table and a minimum water level of 0.30 m is maintained above the centre of drains.
Analytical solution, Drainage, Recharge, Semi-confined, Water table fluctuation.
Disclaimer/Regarding indexing issue:
We have provided the online access of all issues and papers to the indexing agencies (as given on journal web site). It’s depend on indexing agencies when, how and what manner they can index or not. Hence, we like to inform that on the basis of earlier indexing, we can’t predict the today or future indexing policy of third party (i.e. indexing agencies) as they have right to discontinue any journal at any time without prior information to the journal. So, please neither sends any question nor expects any answer from us on the behalf of third party i.e. indexing agencies.Hence, we will not issue any certificate or letter for indexing issue. Our role is just to provide the online access to them. So we do properly this and one can visit indexing agencies website to get the authentic information.