Papadopulos-Cooper Solution for Confined Aquifers

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Papadopulos-Cooper Solution for Confined Aquifers

Description

A mathematical solution by Papadopulos-Cooper (1967) is useful for determining the hydraulic properties (transmissivity and storativity) of confined aquifers. Analysis involves matching the solution to water-level displacement data collected during a pumping test. The Papadopulos-Cooper solution accounts for wellbore storage effects in a large-diameter (finite-diameter) pumping well.

AQTESOLV for Windows provides visual and automatic methods for matching the Papadopulos-Cooper 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 Papadopulos-Cooper solution:

	aquifer has infinite areal extent
	aquifer is homogeneous, isotropic and of uniform thickness
	pumping well is fully
	flow to pumping well is horizontal
	aquifer is confined
	flow is unsteady
	water is released instantaneously from storage with decline of hydraulic head

Solution Options

AQTESOLV for Windows provides the following options for the Papadopulos-Cooper solution:

	large-diameter pumping wells
	variable pumping rates
	multiple pumping wells
	multiple observation wells

References

Papadopulos, I.S. and H.H. Cooper, 1967. Drawdown in a well of large diameter, Water Resources Research, vol. 3, no. 1, pp. 241-244.