ABSTRACT: Solution of hydrogeological research tasks demands very of ten building of special final monitoring objects. They are constructed in places, where regular monitoring network points are lacking. Resulting data acquired from final monitoring objects built in Studený potok brook catchment are presented. They documented importance of such type of data by identification of human influencing of hydrological time series courses, or by quick identification of sudden changes in chemical composition of water due to chemical reactions in the system water - rock or as a consequence of pollution threatening the quality of water of the whole environment.