Determination of Aquifer Parameters from Step Tests and Intermittent Pumping Data

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Abstract
The expression image is a handy tool for predicting aquifer parameters using all the drawdown and recovery data obtained during step‐drawdown tests or periods of cyclic or intermittent pumping.For inefficient wells the expression image fits pumping wells better. The data from conventional step‐drawdown tests of pumping wells can be used to obtain T, C, and y. If the data fail to fit the ideal, they may be used to interpret local hydrologic conditions.

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