Analytical equations and methods for aquifer test analysis
Unsteady-state flow equations Constant water level in adjacent aquifer Drawdown in the main aquifer
where
Drawdown in aquitard
Drawdown in aquitard (slightly leakage)
or approximation (late time)
where zp – distance from observation point to top (or bottom) main aquifer, m.
Alternating water level in adjacent aquifer Drawdown in the main aquifer (1)
Drawdown in adjacent aquifer (2)
Drawdown in aquitard
where
Drawdown in semi-infinite aquitard
where
Drawdown in semi-infinite aquitard (slightly leakage)
or approximation (late time)
Methods of analysis and parameters being estimated
Aquifer parameters estimation can be made both from drawdowns in the main and adjacent aquifers. For constant water level in adjacent aquifer
For drawdown in semi-infinite aquitard
Drawdown in semi-infinite aquitard (slightly leakage)
For approximation
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