Water-table variation in a sloping aquifer due to random recharge
1996
Srivastava, K. | Rai, S.N. | Singh, R.N.
Variation in the level of the water table is closely linked with recharge. Therefore, any uncertainty associated with the recharge rate is bound to effect the nature of the water-table fluctuation. In this note, a ditch-drainage problem of a sloping aquifer is considered to investigate the effect of uncertainty in the recharge rate on water-table fluctuation. The rule of recharge is taken as an exponentially decaying function with its decay constant as a Gaussian random variable. Expressions for the first two moments of the water-table height, i.e. mean and standard deviation, are presented. By using these expressions, the effect of uncertainty in the recharge rule on the water-table fluctuation has been analyzed with the help of a numerical example.
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