ABSTRACT
Every project for a hydraulic scheme, thought-out and rationally constructed, brings benefits, above all economic benefits, as well as social benefits. There can also be expected certain benefits from the refinement and enhancement of the environment. There are some structures and works within the framework of the hydraulic scheme, especially the dam and the reservoir, which also cause, to a smaller or greater extent, negative effects on the environment. That is why in the designing, even at the stage of determining the technical-economic feasibility of the hydraulic scheme, we should examine several alternative solutions for the dam and the reservoir in order to utilize all possibilities for keeping to the least possible measure of negative effects (Golzé, 1977; Razvan, 1992).
