Simple alternative groundwater models

1 CD ROMEpistemological uncertainty of groundwater models is reflected in the conceptual model uncertainty, especially in the model structure. It is possible to cope with it by using more (even very simple) conceptual models based on different approaches or assumptions. The thesis summarizes the existing classifications of uncertainty (esp. that of conceptual model), and proposes a new classification of model usage. The presented case studies compare simple and complex models, test alternative hypotheses by a set of simple models or represent alternative predictive models. Such a strategy is very effective especially in the absence of adequate input data when it is not possible to validate the model. Tenability of the models is evaluated semi-quantitatively. For such models to be easy to formulate, develop and utilize, an information system using tools, approaches and technologies of business intelligence (Pentaho platform) has been developed