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Historical changes in water use in Czech third-order catchments and indications of potential trends based on new regional climate models by the CHMI

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The article presents the results of the Czech Hydrometeorological Institute (CHMI) obtained when addressing the sub-objectives “Scenarios of future water needs for different climate scenarios and individual sectors of water use” (DC 1.1) and “Identification of areas with deficient water resources” (DC 1.2), which are part of TA CR project No. SS02030027 “Water systems and water management in the Czech Republic in conditions of climate change (Water Centre)” and constitute specific tasks within the work package WP1 focusing on the future of water. The aim of the CHMI was to calculate and analyse how river flows upstream of gauging stations in Czechia are influenced by water use and to determine how this influence may change in relation to climate change.

Assessment of the hydromorphological status of river water bodies in the Czech Republic using HYMOS methodology

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Assessment of the hydromorphological status and its elements (hydrological regime, continuity, morphological conditions) is part of the monitoring of the ecological status of water bodies. Hydromorphology, as a supporting component of biological assessment, has a significant impact on living organisms in aquatic ecosystems. Based on the Ministry’s request, a new methodology for assessing the hydromorphological status of water bodies category rivers (HYMOS) was developed within the TA CR project. This methodology takes into account new requirements and current knowledge in the field of hydromorphology, while also minimizing the drawbacks of previous methodologies, particularly regarding time and cost efficiency in the assessment process.