water flows over the walls of a stone dam in milos on a clear day

aquatic arch architecture blue bridge calm cascades civil clear construction creek dam day design elements energy engineering environment floodgate flow flowing flows generation generator geology historical hydro hydroelectric industry lake landscape large maintenance management marvel milos nature outdoor outdoors overflow power reflecting reflection reservoir ripples river rocks scenery scenic showcases sky stone structure summer sunlight surface surrounding technology tranquil tranquility view wall walls water waterway