ABSTRACT: Estimation of vertical distribution of hydraulic parameters in rocks with dominating fissure type of permeability is usually based on interval hydraulic tests, as hard rock properties usually do not enable positioning of piezometers mainly from economic point of view. Results of 44 level hydraulic tests (both pumping and recovery) on 11 boreholes of 100,0 - 303,8 m of depth are discussed in the paper. Position of more permeable intervals is compared with core logs and drill loggings. Quite contradictory results of this comparison are probably due to applied dril1ing technology, sealing the well surface during the borehole development.