Usefulness of Hydrographic System for Tourism and Recreation The importance of stagnant and flowing waters in the process of restoring to health is understimated by people. Hydrographic network is understood as one of recreational values, thus extorting certain kinds of exercises: motor (swimming, angling, aquatic sports), relaxing and soothing ones (murmur of water). Microclimate on the border-line of both the land and water environments constitutes a strong stimulus causing immunological reactions of the organism. All these functions can be usefully performed by water for our health, if it is an element of aesthetic landscape, attractive scennery and if it is not polluted. The river systems is, unfortunately, a receiver of all kinds of industrial wastes and municipal sewage. In such cases it composes a measure of threat to human health. All kinds of healing and wholesome abilities disappear and it becomes a barrier to the development of any kind of active rest at the riverside.