The Váh (Hungarian: Vág; German: Waag; Polish: Wag) is the longest river entirely in Slovakia. A left tributary of the Danube river, the Váh is 403 km long. Its two sources, the Biely Váh (White Váh) an the Čierny Váh (Black Váh), are located in the High Tatras and Low Tatra mountains, respectively, and it flows over northern and western Slovakia and finally pours into the Danube near Komárno. The left tributaries are Demänovka, Revúca, Ľubochnianka, Turiec, Rajčanka and Nitra rivers and the right tributaries are Belá, Orava, Varínka, Kysuca, Biela voda, Vlára, Dubová, Dudváh and Malý Dunaj rivers.