Comparison between Theim and Theis Equations in Analysis of Pumping Tests

The presented study is tried to analyze the main difference between the application of Theim (1906) and Thies (1935) equations for steady and non- steady conditions to determine the property of layer such as (Transmissivity , Specific yield and storativity). Thies and Theim methods can be applied for pumping test, using a single well testing lead to well losses and aquifer losses, the results of property layer need further adjustment therefore, advisable to have observation well in order to avoid losses (such as well losses and aquifer losses), however, by applying Theim equation, the property of layer was restricted just for Transmissivity since the application is for equilibrium condition. The benefit is performed to evaluate the capacity of an aquifer to meet municipal or industrial water requirement and hydraulic characteristics reflect the potential of an aquifer for water development