Hydromorphological valorization according to Water Framework Directive is an element of support biological evaluation of surface water's ecological state. Ecological state of rivers is connected with number and diversity of species that live in them. Biodiversity of aqueous environment is depended on changes occurring in the river environment characteristics what is mostly connected with riverbeds conversions. In this article present the results of hydromorphological valorization of section of The Bystrzyca River below Mietkowskie Lake together with its old bed. Artificially built drop channel that carries away water from the reservoir (1,4 km), old riverbed (2,2 km) which had conducted water before the dam was built and the section of river that was created by the connection of new section with The Bystrzyca old riverbed were analysed (1,4 km). The analyzed a total of 25 sections of river, 200 meters each. The naturalness degree of individual sections was evaluated on the basis of Ilnicki and Lewandowski methodology. Ecological evaluation criteria have taken into consideration riverbed morphology, river hydrology, water quality, tree cover, aquatic and banks vegetation, riparian zone and the valley land management. From conducted research follows that with increasing the distance from the reservoir the naturalness category of The Bystrzyca ...
The paper presents the results of ecomorphological valorization of the left-bank tributary of the Oder River - the Oława River situated on Wrocław area in the sections from 01+400 to 04+800, between the Rakowiecki Bridge and the water-bearing areas of the city. The areas along the Oława River belong to the eco-logically valuable thanks to it biodiversity. However, their extraordinary landscape make them the subject of cultivation plans in the valley. The studied river segment was divided into 17 sections 200 m each, where hydromorphological valorization was carried out by the use of Ilnicki and Lewandowski method. The aim of the paper was the assessment of the ecological potential of river valley on the urbanized area and possibilities of maintaining natural environment in possible best condition despite of environmental hazard.
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