Geografie 1971, 76, 81-95
Ground Water Regionalization on Czechoslovakia Teritory
Within the frame of the task of the physico-geographical regionalization of the Czech Socialist Republic even the regionalization of shallow ground waters was carried out on the said territory. In contradistinction to previous predominantly hydrogeological divisions of this territory the hydrological method was applied in this case based on the result of long-lasting observations of ground water tables and yields of springs on the basis of which regions with equal or very similar characteristic features of the ground water regime were defined. On the basis of the conditions, source and time of supply of ground waters two basic types of ground waters are distinguished on the territory mentioned i. e. that with supply of the groundwater storage ail the year long and that with seasonal supply of groundwater storage. With the first type of ground waters 5 zones can be distinguished according to the everage chronological occurrence of highest and lowest mean monthly states of water tables and/or yields of springs, and with the second types 8 zones with different ground water regime can be distinguished. Within the frame of the zones smaller territorial units are delimited on the basis of mean specific subsurface runoff. The specific subsurface runoff was replaced in this case by the specific runoff of the socalled 355-days water which is the superficial runoff excelded in average for 355 days in the year. The round water regions on the territory of the Czech Socialist Republic are represented in the general map (encl. No 1). In the map the basic ground water types are bordered with a thick full line whereas zones with a different ground water regime are marked by thin full lines and the regions according to specific subsurface runoffs are defined by broken lines. The diverse regions are moreover marked by numerical indices denoting (1) the appurtenance of the region to the basic ground water type (Roman numerals), (2) the placing to the zone according to the regime (capital letters) and (3) the quantity of the specific subsurface runoff the basis of the seven - terms scale (Arabic numerals).
