 The waters from some border municipalities (Livigno in Lombardy, Innichen and Sexten in Trentino-Alto Adige/Südtirol) drain into the Black Sea through the basin of the Drava, a tributary of the Danube, and the waters from the Lago di Lei in Lombardy drain into the North Sea through the basin of the Rhine.In the north of the country are a number of subalpine moraine-dammed lakes, the largest of which is Garda ().Other well-known subalpine lakes are Lake Maggiore (), whose most northerly section is part of Switzerland, Como (), one of the deepest lakes in Europe, Orta, Lugano, Iseo, and Idro.