PODZEMNÁ VODA XIII 1/2007 1 HYDROGEOLOGICKÉ MAPY NA ÚZEMÍ SLOVENSKA – HISTÓRIA, SÚČASNOSŤ A BUDÚCNOSŤ HYDROGEOLOGICAL MAPS ON THE SLOVAK TERRITORY – HISTORY, PRESENT AND FUTURE Peter MALÍK*, Peter BAJTOŠ**, František BOTTLIK*, Radovan ČERNÁK*, Erika KOVÁČOVÁ*, Daniel MARCIN*, Juraj MICHALKO*, Stanislav OLEKŠÁK**, Svetozár SCHERER*, Jaromír ŠVASTA* * Štátny geologický ústav Dionýza Štúra, Mlynská dolina 1, 817 04 Bratislava 11 ** Štátny geologický ústav Dionýza Štúra, Regionálne centrum Spišská Nová Ves, Markušovská cesta 1, 052 40 Spišská Nová Ves ABSTRACT Since 1920s, first maps showing hydrogeological features on the territory of Slovakia were drawn by mapping geologists, mostly to point out the most important springs - sources of potable groundwater, thermal or mineral water. Since 1950s, maps were produced to accompany the results of massive regional hydrogeological investigations. The whole area of Slovakia was covered by the uniformly created basic hydrogeological maps in 1:200,000 scale, accompanied by the maps of groundwater chemistry in the same scale at the end of 1970s. The content of basic hydrogeological maps at 1:50,000 covering Slovakia was gradually developed since 1991. The basic characteristics of aquifers - transmisivity and its variability, groundwater outflow, lithology and stratigraphy are expressed by background colour, by intensity of colour, number (index) and hatching. Background colour represents the average value of aquifer transmisivity. Hydrogeological maps are gradually being transferred to geographical information systems, and published electronically in HTML format. KEY WORDS hydrogeological maps, Slovak Republic, groundwater features, rock hydraulic properties, spatial aquifer distribution KĽÚČOVÉ SLOVÁ hydrogeologické mapy, Slovensko, vlastnosti podzemnej vody, hydraulické vlastnosti hornín, priestorové rozšírenie zvodnencov