Water Framework Directive

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.

Significant adverse effects of measures for the use of heavily influenced water bodies: experiences and examples from abroad

In April 2018, an international workshop was held in Brussels to assess the significance of adverse impacts of planned measures for use or wider environment of heavily modified and artificial water bodies. This issue is related to the implementation of the Water Framework Directive 2000/60/EC and the harmonization of the level of good ecological potential among EU Member States.

Surface water body typology category river in the 1st and 2nd cycle of River Basin Management Plans and its consequence to ecological status assessment

Surface water body delineation and setting a typology are one of the initial steps during Water Framework Directive implementation (WFD) [1]. The first delineation and typology was prepared in 2004–2005 for the first plans, but all the results were significantly changed in the second cycle 2009–2010.