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## Notation >## Methods of analysis |

Methods of aquifer test analysis

Method |
Description |

matching |
Visual comparison of measured and calculated drawdowns plots. Drawdowns are calculated either by direct methods (i.e. analytical solutions) or inverse methods, implemented in UCODE and least square method |

straight-line |
Straight-line method – visual comparison of observation data with a straight line calculated for specific conditions, when analytical solutions can be simplified into linear equations. For steady-state solutions, the horizontal line is used |

type-line |
Type-line method – plots of theoretical drawdown in various types of coordinates are manually displaced to match the observation data in the same coordinates |

bisecting line |
Method of bisecting line – the ratio between observed drawdowns in the first and second observation wells is compared their theoretical ratio, that is based on the calculated drawdowns |

In the column "Method", methods are referred to by short names. The same methods are explained in the relevant sections of the help system.