 The longest rivers in Croatia are the Sava, Drava, Kupa and a section of the Danube.The longest rivers emptying into the Adriatic Sea are the Cetina and an only section of the Neretva.The largest lakes in Croatia are Lake Vrana located in the northern Dalmatia, Lake Dubrava near Varaždin, Peruća Lake (reservoir) on the Cetina River, Lake Prokljan near Skradin and Lake Varaždin reservoir through which the Drava River flows near Varaždin.