Forecast of water resource security in the Czech republic by 2050
This article presents the methods and results of an assessment of the security of water abstraction and minimum flow rates through 2050, taking into account the potential impacts of climate change on water resources and projected water demand based on socioeconomic development forecasts. The study was conducted on a national scale. Water bodies defined for water planning purposes were selected as the minimum spatial scale.
Changes in the status of surface water bodies based on chemical and physicochemical indicators
This article presents a proposed approach for assessment of monitoring changes in the status of surface waters—that is, how progress toward achieving good status is being made thanks to the measures implemented.
Assessment of trends in concentrations of chemical and physico-chemical indicators of the status of surface water bodies
This article presents the results of trend assessment of selected chemical and physicochemical indicators of surface water status. The assessment approach is based on a similar procedure for assessing significant upward trends of pollutants and trend reversals in groundwater bodies. The procedure is based on measured concentrations from 2010 to 2018 and estimates concentrations at the end of 2021, 2024, and 2027. For the trend assessment, data from Czech river basin state enterprises were used to assess the ecological status/potential and the chemical status of surface water bodies. However, only part of the profiles with measured concentrations met the time series requirements. The assessment of trends towards the end of 2024 and 2027 shows that some indicators (polyaromatic hydrocarbons, adsorbable organically bound halogens – AOX, and nitrate nitrogen) are projected to improve compared to the status as of 2018. On the other hand, a slight deterioration is predicted for biochemical oxygen demand, dissolved nickel, and ammonia nitrogen.