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All in one solution

StormTac is unique since it in one single model includes the interactions within the whole watershed system; runoff and base flow – pollutant transport – receiving water impacts and criteria – design of transport, pollutant treatment and flow detention facilities. StormTac web application: http://app.stormtac.com/

Easy to use

The tool is user-friendly and self explanatory. It consists of an overview flowchart with clickable input data boxes, the results are presented in the flowchart. Notes and a quick manual describes the simple steps from start to end of calculations. You can begin directly without any required education.

Updated continuously

The model always employs the latest updated standard values, such as standard concentrations for different land uses. The methods are scientifically reviewed and updated to and complemented with new data and are in accordance with the latest scientific findings, e.g. regarding climate factors, rain intensity data end empirical functions of reduction efficiencies of storm water treatment facilities.

Little input data

The only required input data consist of areas per land use, however all default data (such as yearly precipitation, rain intensities, runoff coefficients and concentrations) can easily be changed and the model can be used for quick calculations of e.g. required space for treatment to a detailed design of treatment and flow detention facilities, including for example outlet details, water depths, slopes and cost estimations.

Latest news

Updated database 2017-01-22

Irreducible concentrations, reduction efficiencies and surface water data
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Updated database 2016-08-29

Reduction efficiencies of dissolved metal fractions and data of atmospheric deposition
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Updated database with uncertainties for both standard concentrations and reduction efficiencies

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New paper compiling design criteria for download

Biofilters, swales, grass ditches and infiltration trenches
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Updated files for download; standard concentrations and database, v. 2016-07-30

Calculation of uncertainties of standard concentrations from different land uses
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