ABSTRACT
Hydrogeological and geological field surveys are the indispensable basis for purposeful monitoring campaigns and catchment characterisation. In order to acquire, within a given timeframe, comprehensive information about complex hydrogeological settings or under-studied catchments it is not only advisable, but essential to follow a step-by-step protocol that is based on goal-oriented field work. Information from such an approach applied to the delineation of catchment characteristics enables the conduct of process-oriented monitoring at strategic locations and a more meaningful interpretation of resulting data. The approach described in this chapter becomes particularly important regarding the complexity of karstified aquifers and overlying catchments. Implementation of the methodology was applied to investigations in a karst area within the Outer Dinarides (Gorski Kotar, Western Croatia). In this study, information about the complex local hydrogeology was obtained through geological mapping, hydrogeological field surveys, and hydrological monitoring using stable isotopes.
