Abstract
The slope-matching method is used for numerical determination of the confined aquifer parameters. In this study, a new slope-matching method is proposed by using a weighted mean of the slope which is implied drawdown with respect to time. The method considers that the slope produces the transmissivity through a simple relationship valid for u⩽0.01 . Later the well function, the dimensionless time variable, and the storage coefficient values are calculated from the transmissivity values. As a result, the time-varying aquifer parameter values are obtained for the whole duration of pumping. Average aquifer parameters can be obtained for u⩽0.01 similar to the Cooper–Jacob approximation. The method is applied to field data, which are available in the open literature. It is observed that the proposed methodology yielded a sequence of transmissivity and storativity values with the mean error, mean absolute error, and standard error of estimate all less than similar readily available techniques in the literature.
Published Version
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