Infinite leaky aquifer
aquifer system consists of
isotropic aquifers interbedded with aquitards;
aquifer: the aquifer
that contains pumping well and where the water drawdown is
aquifer (may be two
aquifers) water level drawdown is constant during the test
water levels in aquifers may
be different or coincide;
aquifer has infinite areal extent;
well is fully
penetrating, located in the main aquifer, its storage capacity is
estimated in the main aquifer at any distance from the pumping
through the aquitard is
of the aquitards is
storage capacity may be taken into account (see complementary
Cross-section of the leaky aquifer system with water level in
adjacent aquifers constant during the test period.
a – 3-layered confined aquifer system with a leaky roof; b – the
same with a leaky bed; c – 3-layered confined aquifer system with
different initial levels in aquifers; d – 3-layered unconfined
leaky aquifer system; e, f – 5-layered confined (e) and unconfined
(f) aquifer systems with leaky roof and bed. Arrows show flow
direction within layers.
fundamental equation the following complementary solutions are
solution for water level drawdown in the fully penetrating
observation well in the leaky aquifer with allowance for the
pumping well storage capacity
solution for water level drawdown in the pumping well in leaky
aquifer with allowance for the pumping well storage
Hantush’s solution for the aquifer anisotropic on the lateral
To be analyzed
One well pumped at a constant
One or several wells pumped at a
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from pumping tests in anisotropic aquifers // Journal of
Geophysical Research. 1966. Vol. 71, N 2.
Jacob C.E. Non-steady
radial flow in an infinite leaky aquifer // Transactions, American
Geophysical Union. 1955. Vol. 36, N 1.
Thomas R.G. A method for
analyzing a drawdown test in anisotropic aquifers // Water
Resources Research. 1966. Vol. 2, N 2.
Jacob C.E. Radial flow in a
leaky artesian aquifer // Transactions, American Geophysical Union.
1946. Vol. 27, N 2. P. 198–205.
Chen-Wu Su. Nonsteady flow
to a large well in a leaky aquifer // Journal of Hydrology. 1974.
Vol. 22, N 3/4. P. 333–345.