# 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/second centimeter/hour centimeter/second foot/day foot/second inch/hour inch/second kilometer/hour kilometer/second knot mach sea level 15 C meter/day mile/hour mile/second millimeter/second speed of light in vacuum yard/second pressure head at point 1 (h1) meter attometer centimeter chain dekameter decimeter exameter femtometer foot gigameter hectometer inch kilometer light year link megameter micrometer micron mile millimeter nanometer petameter picometer rod terameter yard pressure head at point 2 (h2) meter attometer centimeter chain dekameter decimeter exameter femtometer foot gigameter hectometer inch kilometer light year link megameter micrometer micron mile millimeter nanometer petameter picometer rod terameter yard radius point 1 (r1) meter attometer centimeter chain dekameter decimeter exameter femtometer foot gigameter hectometer inch kilometer light year link megameter micrometer micron mile millimeter nanometer petameter picometer rod terameter yard radius point 2 (r2) meter attometer centimeter chain dekameter decimeter exameter femtometer foot gigameter hectometer inch kilometer light year link megameter micrometer micron mile millimeter nanometer petameter picometer rod terameter yard

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#### Conversions:

 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 radius point 1 (r1) = 0 = 0 meter radius point 2 (r2) = 0 = 0 meter

#### Solution:

 flow rate (Q) = HAS NOT BEEN CALCULATED

#### Other Units:

Change Equation
Select an equation 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.

by Jimmy Raymond

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