GGU-PUMPTEST: Preface

The GGU-PUMPTEST program allows the evaluation of pumping tests using the following methods:

• time-drawdown method;

• distance-drawdown method;

• distance-time-drawdown method;

• Theis recovery method;

• Theis type curve method.

Besides the evaluation of pumping tests, the program allows pumping test planning ("Test planning" menu). Here, you can simulate a pumping test using estimated values for permeability, etc. It is then possible, based on the simulation results, to estimate the measurement precision required and the time required for the pumping test.

In addition, in the "Info/Simple analyses" menu item, the program offers two equations for confined and unconfined groundwater, which allow you to perform a quick, approximate determination of the permeability.

The program includes convenient data input. The system is permanently displayed on the screen. Every change to the data is displayed on the screen, so that optimum control of the input data is guaranteed.

There are "?" and "Info"’ buttons in the dialog boxes for many technical and program-specific questions. Click on the "?" buttons or "Info" buttons to obtain the necessary information.

The graphic output supports the true type fonts provided by WINDOWS, so that an excellent layout is guaranteed. Colour output and numerous graphic formats (BMP, TIF, JPG etc.) are supported. PDF and DXF files can also be imported via the integrated Mini-CAD system (see "Mini-CAD" manual).

The program has been extensively tested. No errors have been found. Nevertheless, liability for completeness and correctness of the program and the manual, and for any damage resulting from incompleteness or incorrectness, cannot be accepted.