reservoir lake wahnbachtalsperre, nothing allowed on the lake, just birds

water reservoir lake shore river sea reflection bay tree coast pond waterway cove landscape terrain nature vacation fjord wahnbachtalsperre bonn built 1950s flood prevention fresh reserve located bad honnef siegburg dam seligenthal main source large covering valley habitat fish birds though small rivers direct sieg rhin level rhine kapara nigswinter remagen side neuenahrahrweiler germany 2020 late summer view tower harbor floatign floating perfect swimming allowed