Theis solution for pumping test interpretation in confined aquifers in Aquifer App - Tutorial 

Theis (1935) developed a method to estimate values of T and S from pumping test data. Time and drawdown data are measured in an observation well and then matched to the Theis curve. Aquifer App, a web framework for applications in hydrogeology now has a tool for the interpretation of the Hydraulic Transmissivity based on the Theis solution. This is a perfect tool to parametrize homogeneous and confined aquifers on transient state flow conditions.
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Theis solution for pumping test interpretation in confined aquifers in Aquifer App - Tutorial