The invention relates to the field of hydraulic engineering and is designed to provide electricity to consumers on the basis of a low-head dam consisting of prefabricated reinforced concrete construction using composite materials mounted on rivers of small channels or with a depth of 2.5 m and creating a pressure up to 10 m and is directed the creation and layout of a collapsible structure retaining structures while ensuring the necessary loads and with low material consumption and low cost, with a simple installation and operation, as well as for the implementation of possible types of design, acquisition and retaining structures on small streams. Said technical result is achieved in that in the collecting retaining structure comer profile for small streams comprising reinforced concrete slab and geomembrane protected geotekstitelem, it is made of reinforced concrete slabs serving retaining walls and presenting a vertical concrete structure 1 mounted on the foundation plate 2, from precast concrete, with the tooth 3 which is to ensure stability of the system is reinforced with buttresses 4 based on steel triangular support members, mount OF DATA thereon and transmit the load on the foundation plate 2, by the flow of a vertical reinforced concrete structure 1 and the drooping 7 for waterproofing protected and reinforced protective layers, at least two layers geotekstitelya 8, for example made of high modulus polyester, the lower layer is laid on drooping 7 and between two layers of geotextile 8 as impervious member arranged geomembrane 9, the base plate 2 is protected by the shift teeth 3 and hard prism 5, acting as an absorber.
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