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

coefficient of permeability (K) = 0 = 0 meter/day |

pressure head at point 1 (h _{1})= 0 = 0 meter |

pressure head at point 2 (h _{2})= 0 = 0 meter |

radius point 1 (r _{1})= 0 = 0 meter |

radius point 2 (r _{2})= 0 = 0 meter |

flow rate (Q) = NOT CALCULATED |

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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