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## Conceptual models > Slug test >## Bouwer-Rice’s solution |

Bouwer-Rice’s solution for slug test in unconfined aquifer

Assumptions:

✓aquifer is unconfined, isotropic, of infinite lateral extent;

✓pumping well is partially penetrating;

✓drawdown is estimated in the pumping well.

Slug test in unconfined isotropic aquifer in partially penetrating well.

Unsteady-state flow equation

where radius of investigation (R) is calculated for partially penetrating well

and for fully penetrating well it reads

A1, A2, A3 – dimensionless parameters depending from the well screen length and diameter of the pumping well.

Plot for dimensionless parameters A1, A2, A3 estimation.

Methods of analysis and parameters being estimated

Plot |
Method |
Parameters |
Comments |

straight line 1) |

1) the straight line starts from the origin of coordinates.