Historický vývoj hladin podzemní vody ve vybraných oblastech

Abstract

Fluctuations in groundwater levels in the Czech Republic are characterized by a different proportion of seasonal fluctuations, a long-term trend in fluctuations in groundwater levels and the speed of reaction to significant recharge episodes. Within one hydrogeological region with the same hydrogeological conditions, there are thus wells with very different fluctuations in groundwater levels. It is therefore very difficult to describe one hydrogeological region with one type of characteristic fluctuation of groundwater levels, which describes the dynamics of fluctuations of groundwater levels in the hydrogeological region. On the other hand, hydrogeological regions at different distances from each other in different geological environments have very similar fluctuations in groundwater levels. For these reasons, all wells of the ČHMÚ observation network were divided into 4 main groups: a group with predominant seasonal fluctuations in the groundwater level, with a long-term trend of fluctuations in the groundwater level, a group of long-term affected wells in the hydrogeological regions of the deep layer, and a group of wells that were excluded from the evaluation groundwater levels. The above-mentioned classification made it possible to compare the development of groundwater levels in different areas with an emphasis on the behaviour of groundwater levels in recent years.