ABSTRACT: Nízke Tatry Mts. form a dominant geomorphologic structure in the centre of Slovak Republic, ranging 80 km from west towards east in a width of 17 to 30 km from south to north. Its average altitude of 1090 m a.s.l., with the highest peak Ďumbier (2048 m a.s.l.) gives also a possibility of high effective rainfall, reaching maximum 1000 mm and average of 606 mm. An important role there plays also fact, that both on northern and southern rim of this mountain range huge Triassic carbonate rocks are outcropping, thus forming important regional aquifers. From these, groundwater outflows in huge amounts concentrated in important karstic springs, quantitatively monitored by Slovak Hydrometeorological Institute since 1970s. Also other spring type, bound to crystalline core of the mountains, was observed in some cases. Typical recession curves derived from these observations are discussed in the paper.