# 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 flow rate #### Inputs:

 coefficient of permeability (K) meter/secondcentimeter/hourcentimeter/secondfoot/dayfoot/hourfoot/minutefoot/secondinch/dayinch/hourinch/minuteinch/secondkilometer/daykilometer/hourkilometer/minutekilometer/secondknotmach sea level 15 Cmeter/daymeter/hourmeter/minutemile/daymile/hourmile/minutemile/secondmillimeter/secondspeed of light in vacuumyard/second

#### Conversions:

 coefficient of permeability (K)= 0 = 0meter/day
 pressure head at point 1 (h1)= 0 = 0meter
 pressure head at point 2 (h2)= 0 = 0meter
 radius point 1 (r1)= 0 = 0meter
 radius point 2 (r2)= 0 = 0meter

#### Solution:

 flow rate (Q)= NOT CALCULATED

#### Other Units:

Change Equation
Select to solve for a different unknown extraction flow rate permeability coefficient pressure head at point 1 pressure head at point 2 radius at point 1 radius 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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By Jimmy Raymond Contact: aj@ajdesigner.com