A mathematical solution by Hantush (1960) is useful for determining the hydraulic
properties (transmissivity and storativity of aquifer, vertical hydraulic conductivity and
storage coefficient of aquitard) of leaky aquifers. Analysis involves matching the
Hantush solution to water-level displacement data collected during a pumping test. The
solution assumes storage in the aquitard and also accounts for partially penetrating
wells.
AQTESOLV provides visual and automatic methods for
matching the Hantush solution to pumping test data. This easy-to-use and intuitive
software promotes rapid and accurate determination of aquifer properties.
Assumptions
The following assumptions apply to the use of the Hantush solution:
aquifer has infinite areal extent
aquifer is homogeneous, isotropic and of uniform thickness
pumping well is fully or partially penetrating
flow to pumping well is horizontal when pumping well is fully penetrating
aquifer is leaky
flow is unsteady
water is released instantaneously from storage with decline of hydraulic head
diameter of pumping well is very small so that storage in the well can be neglected
confining bed(s) has infinite areal extent, uniform vertical hydraulic conductivity and
uniform thickness
confining bed(s) is overlain or underlain by an infinite constant-head plane source
flow in the aquitard(s) is vertical
Solution Options
AQTESOLV provides the following options for the Hantush
solution:
variable pumping rates
multiple pumping wells
multiple observation wells
partially penetrating pumping and observation wells
Benchmark
References
Hantush, M.S., 1960. Modification of the theory of leaky aquifers, Jour. of Geophys.
Res., vol. 65, no. 11, pp. 3713-3725.