▁( Sch ra uben fab rik ▁F alk au ) ▁with ▁a ▁dam ▁in ▁the ▁north ▁and ▁the ▁water ▁surface ▁raised ▁by ▁about ▁ 6 ▁metres . ▁At ▁the ▁same ▁time ▁the ▁lake , ▁which ▁had ▁only ▁h ither to ▁been ▁fed ▁from ▁the ▁east ▁by ▁the ▁K äh ner b äch le , ▁was ▁given ▁another ▁in flow ▁in ▁the ▁form ▁of ▁a ▁small ▁le at ▁( H ang k anal ) ▁from ▁the ▁south west . ▁Since ▁ 1 9 3 2 ▁the ▁Wind g f äll wei her ▁has ▁been ▁incorpor ated ▁into ▁the ▁transfer ▁of ▁water ▁from ▁the ▁Se eb ach ▁to ▁the ▁Schl uch see ▁( cover ed ▁le at ) ▁and ▁dra ined ▁since ▁then ▁in ▁the ▁opposite ▁direction ▁i . e . ▁to ▁the ▁south . ▁The ▁water ▁is ▁led ▁via ▁a ▁d itch ▁over ▁the ▁low ▁waters hed , ▁initially ▁as ▁the ▁Wind gef äll bach ▁and ▁later , ▁the ▁Schwar z ach , ▁into ▁the ▁Schl uch see . ▁ ▁Since ▁ 1 9 5 0 ▁the ▁lake ▁has ▁been ▁protected . ▁In ▁ 2 0 0 2 ▁an ▁ang ling ▁and ▁fish ▁consumption ▁ban ▁was ▁announced , ▁because ▁PC B ▁had ▁been ▁discovered ▁in ▁the ▁sed iment ▁depos itions ▁on ▁the ▁bottom ▁of ▁the ▁lake . ▁ ▁On ▁the ▁wood ed ▁eastern ▁shore ▁of ▁the ▁Wind g f äll wei her , ▁a ▁lake ▁bare ly ▁touched ▁by ▁the ▁streams ▁of ▁visitors ▁to ▁the ▁area , ▁lies ▁a ▁rather ▁less ▁pictures que ▁bath