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The article analyzes the need of a suitable velocity field creation in the cross section profile of the fish pass, which would generate velocity variability for the occurring ichthyofauna with different swimming abilities. In this way, is not only the condition for the maximum vertical velocity fulfilled, but also parts of the profile with slow-flowing water in the bank zone are formed. There are also others recommendations as top width of the water level, doped discharge or recommended longitudinal slope of the f...

The article analyzes the influence of operation on all structures downstream the stream on the water content and dryness in the stream. As area of interest was chosen the catchment of a small stream in the foothill region with a gauging station and several water structures built on this stream in the last century. Seven structures with the most significant impact were examined. Multiple reconnaissance of the terrain and structures were performed, in different time periods; the existing operational manuals of water...