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Unconfined Aquifer Well Design Calculator

Fluid Mechanics Hydraulics Hydrology

The following equation uses Darcy's equation with pumping occurring at the center of a cylinder. This equation can be utilized to determine the cone of depression and well drawdown in an unconfined aquifer.

Solving for radius at point 1.

radius at point 1

Inputs:

radius point 2 (r2)
coefficient of permeability (K)
pressure head at point 1 (h1)
pressure head at point 2 (h2)
flow rate (Q)
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Conversions:

radius point 2 (r2)
= 0
= 0
meter
coefficient of permeability (K)
= 0
= 0
meter/day
pressure head at point 1 (h1)
= 0
= 0
meter
pressure head at point 2 (h2)
= 0
= 0
meter
flow rate (Q)
= 0
= 0
meter^3/day

Solution:

radius point 1 (r1)
= NOT CALCULATED

Other Units:


Change Equation
Select to solve for a different unknown
extraction flow rateextraction flow rate
permeability coefficientpermeability coefficient
pressure head at point 1pressure head at point 1
pressure head at point 2pressure head at point 2
radius at point 1radius at point 1
radius at point 2radius at point 2
References - Books:
1) P. Aarne Vesilind, J. Jeffrey Peirce and Ruth F. Weiner. 1994. Environmental Engineering. Butterworth Heinemann. 3rd ed.
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