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Above - water accumulative forms within the shore zone of the reservoir showing significant seasonal water level fluctuations based on the Pakoski reservoir'

Grobelska H.

Landform Analysis

2008

Vol. 6

28--40

The Pakoski reservoir .was created in 1975 as a result of damming the lakes located within the Western Valley of the Noteć River. This reservoir operates in rearly cycles with water level fluctuations of up to 3.6 m. The researches carried off by the author in the years 1998-2003 indicate that the thirty-year exploitation period has not ended the intense reshaping phase of the shore zone of the reservoir. Both intensive shore abrasion and various accumulative forms support the above statement. These forms include the small ones of distinctively initial character, such as accumulative spurs or berms, as well as the complex ones whose shaping process has almost finished and the area of which exceeds a few hundred square metres. Due to constant lowering of the water level, accumulative forms occur within the entire width of the shore-platform which is being dried. In most cases these are whole groups of smaller forms related to one another. A beach can constitute a good example, as it predominantly combines a few, most often 5 to 6, adjoining beach ridges separated with small lagoons.