Use of Bioindication for Design Parameters of River Training in Urbanized Areas

The rivers dominate the urbanized area, as is confirmed by almost all the European cities, where the concept of a city is historically determined by watercourses. In many cases, the dominant character of streams was suppressed by flood protection measures. This effect was significantly visible in urban area of municipalities. River restoration measures should fulfil the needs to create conditions similar to a natural stream. It is necessary to point out that the stream depth variability cannot be directly implemented into regulated channel. The main reason is that even after riverbed restoration a flood protection must be ensured. The need of a river restoration was documented in the urbanized areas of the municipality of Diviacka Nová Ves.