to increase the functionality, led to various grid dam constructions in many countries. The tendency to make the dam construction cheaper and more effortless and to prolong the effect, i.e. The positions of the check dams in the stream bed are determined by the calculations of the slope of siltation The effects of check dams depends of many factors, but the most important is slope of siltation. It practically represents the specific case of the equilibrium bed slope. The slope of the upper surface of retained bedload is called the slope of siltation. By construction of check dams in the torrent bed, the bedload is retained in their accumulation space, forming the siltation. There are several types of check dams and they can be classified according to different aspects. They are the main elements of the classical torrent control systems in small catchments. Check dams are the basic type of structures in torrent control practice. Longitudinal and transversal structures are constructed to this purpose. Torrent control includes the control of deep and lateral channel erosion and the control of floods.
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