This study presents interim results of an evaluation of a potential climate change impact on the preservation of drinking water demand provided by water reservoirs in the timeframe of the year 2050. Hydrological and water sources and demands balance procedures have been applied, including modelling of the storage ability of water resources and water supply systems.
Course of the weather in the last years shows that variability of the weather increases and this also leads to a higher frequency of floods, as well as drought. Drought, regardless of its type, means that there is a lack of water in landscape.
The article deals with the assessment of the hydrological balance in a monthly time step in the territory of the Czech Republic, which was divided into 133 sub-basins for the period 1981–2015.
Exist tools for water balance, time series of water abstractions and their season variability, difference between permitted and real abstractions and impact of drought in 2015 were analysed and assessed in subtask Impact of Drought on Water Use Assessment.
The effect of nature-related measures on the water balance was modeled in the Trkmanka basin. The basin is located in the Moravia, south-east region of the Czech Republic.