Groundwater analysis tools

We've developed several analysis tools to help people assess the effects of groundwater use on the environment.

Well Interference Assessment tool

Our groundwater Well Interference Assessment tool is a web application that allows you to create a PRN file directly from our well and resource consent databases.

Drawdown tool

Our Excel-based drawdown tool calculates pumping-induced drawdown versus time and drawdown versus distance for radial flow to a well under confined or leaky conditions.

It uses the Theis or Hantush-Jacob functions supplied by Dr Bruce Hunt of the University of Canterbury.

Dr Bruce Hunt's tools

Groundwater analysis tools developed by Dr Bruce Hunt (external link) have been published by the University of Canterbury in the hope that others might find them interesting and useful.

The tools may be used and disseminated to other users without charge provided their source is acknowledged and they are not sold for profit.

Stream depletion tools

Version 3

Excel-based analysis of stream depletion effects due to pumping. This workbook incorporates the Theis/Jenkins, Hunt (1999), and Hunt (2003) solutions as well as irrigation efficiency.

Version 2

Excel-based analysis of stream depletion effects of intermittent pumping (updated to be compatible with Excel 2007).

Two aquifer system tool

Excel-based analysis of pumping-induced drawdown and volume distribution in a two aquifer system using the Hunt & Scott (2007) solution.


Environment Canterbury offers no warranty, expressed or implied, as to the accuracy or completeness of the material provided or referred to in this software.

It is not obligated to provide the user with any support, consulting, training or assistance with regard to its use, operation and performance — nor to provide any updates, revisions, new versions or 'bug fixes'.

The user assumes all risk for any damages whatsoever resulting from loss of use, data or profits arising in connection with the access, use, quality or performance of this software.