wahnbachtalsperre with the narrow part at the cliff, seen from the dam

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 overflow channel wave breaker narrow cliff bonn reserve seligenthal birds connected influencing level königswinter neuenahr-ahrweiler rhine