VTEI / Bohemian Cretaceous basin

Bohemian Cretaceous basin

Development and current practice of groundwater balance in Czech Republic: from reserve classification to comprehensive assessment of natural resources

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This article presents a comprehensive overview of the evolution of methodological approaches to groundwater balance assessment in Czechoslovakia and the Czech Republic from the 1960s to the present. It outlines the transition from a static evaluation of “exploitable re-serves” toward a dynamic, process-based concept, emphasizing regular comparisons between actual water abstraction and natural groundwa-ter resources. This shift includes the adoption of monthly assessment intervals and quantile characteristics of base flow, aligning with the requirements of both national legislation (especially Act no. 254/2001 Coll., the Water Act) and European directives on water protection.

Old groundwater in hydrogeological regions 4410 and 4522

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The article presents a project from the Technology Agency of the Czech Republic dealing with the hydrogeology of old waters in hydrogeological regions 4410 and 4522. The aim of the paper is to present a brief hydrogeological characterization of the area of interest, to present the results after the first year of the project, and to describe the uncertainties of existing information. Old groundwaters that have negligible concentrations of tritium can be considered a strategic resource because they are less susceptible to current contamination.