The subject of this paper is presenting actual of works involving the determination of reference conditions for defined categories and types surface waters according to II Annex of Water Framework Directive 2000/60/WE of the European Parliament and the Council of the European Union. The Framework Water Directive [WFD, 2000] makes the framework for the EU activities in terms of water policy, and the introduces in the member states the duty to plan and control water management within river basins. The main objective of the Water Framework Directive is to achieve good ecological status (till 2015) in all the defined water categories (rivers, lakes, transition water, coastal water and underground water). In the following years a good state of waters should be achieved in the areas where present natural, technical and economic conditions make it impossible to achieve in the first stage. In a planistic work over a sustainable development of river valleys and catchments one of the biggest tasks is ecological valuation. In solving this task a very efficient and practical tool includes REFERENCE CONDITIONS made according to Framework Water Directive. Reference conditions make a reference point according to which “the health” of an ecosystem of a given type of ...
Poland as a member of European Union was obligated to implement the Water Framework Directive. One of main purposes which are contained in the Directive is to achieve a good water status until 2015. In order to identifying ecological and chemical water status results of monitoring measures will be used. The assessment of ecological status understanding as a degree of deviation from representative value of parameters is performed by using reference conditions. Initial reference conditions for each among 25 types in Poland, which were established as part of river typology were performed by using data from monitoring points, historic data and experts opinions. Heavily modified river water bodies and artificial water bodies were destignated and it were determined-taking into account impacts and pressures-water bodies at risk in achievement the good status in 2015 9according to WFD). In harmony with regulations of WFD, as part of river typology, initial abiotic characteristic (hydromorphological and physicochemical quality elements) was established and a trial of biological verification of reference conditions, with detailed biological quality elements, was performed. Designated values of reference conditions are the base to assess ecological status of particular river, which allows among others to establish degree of river natural state and ...
