EROSION OF BANKS OF STORAGE RESERVOIRS IN POLAND

ABSTRACT

The abrasion of banks of certain storage reservoirs can have considerable importance. Cases are known where the shift of the bank line forecast to take place within a period of ten or fifteen years was exceeded during the first year of operation of the reservoir. However, transformation and erosion of banks in other reservoirs or other bank sections, although anticipated, either has not occurred, or, when it did, its intensity was much lower than expected. This is why the problem of transformation of the near-shore zone in reservoirs is attracting more and more attention from many scientific institutes.

The paper presents the subject, methods and results of research on the transformation and erosion of the reservoir banks. The main effort has been concentrated on trying to establish the relationships between geological-morphological and climatic-hydrological conditions. It has been stated that the dynamic potential of the reservoir is of decisive importance. This potential, depending on the morphometry of the reservoir and the meteorological conditions (mainly wind) exerts an influence on the reservoir shore line. Consequently, the erosive-accumulation processes become interrelated, resulting in transformation of the bank zone and its adaptation to new conditions.