Fig. 17 in Revision of the stygobiont gastropod genera Plagigeyeria Tomlin, 1930 and Travunijana Grego & Glöer, 2019 (Mollusca; Gastropoda; Moitessieriidae and Hydrobiidae) in Hercegovina and adjacent regions

Fig. 17. Karst aquifers of Hercegovina and their estimated delimitations to drainage basins. As most to the karst aquifers in Hercegovina are represented by subterranean karst conduits, it is difficult to exactly set the watersheds. The subterranean drainage divides in this map were estimated based on our recent knowledge about the geology, hydrogeology and geomorphology. The boundaries are unstable and strongly dependent on a dynamic system of particular water level alternations in each perched water table within the basin as well as on their particular saturation. The interim oversaturation in the particular basin could lead to water divergence to the neighbouring river basin. The supposed inter-basin water divergences at high water saturation are highlighted by blue arrows. Each drainage basin could be further divided to separate subterranean karst conduits, which could also represent a kind of particularly isolated habitat. Freshwater springs are in circles and brackish or submarine spring are as diamonds with locality numbers according to the legend from Figure 1.