Procesy brzegowe w obrębie jezior antropogenicznych w regionie górnośląskim (południowa Polska)

Abstract

Upper Silesia region there are some thousand anthropogenic lakes. There are mainly reservoirs in: subsidence depressions, post-exploitation, dam, dike and many others. Every reservoir is the advantageous place to accumulate debris material in the zone of river and lake waters contact. The Kłodnica delta, originated in the mouth zone of this stream into Dzierżno Duże water re-servoir, reaches the most spectacular sizes. The signs of intensive morphological changes are abrasion landforms (e.g. cliffs, terraces) – not numerously occurring at shores of dam reservoirs but their abundance within post-exploitation reservoirs is ob-served. The accumulative landforms (sandy tips, beaches, mineral and organic shore bars, shallows, accumulation zones fixed by vegetation) occur within the majority of water reservoirs, especially within these of mature shore relief. The decided majo-rity of natural processes modelling their shape is significant for young stage of development of landforms of bottom and littoral zone.