
1) Austro-Hungarian river 2) European river 3) European waterway 4) European watercourse 5) International river of Europe 6) River to the raba 7) River in Romania 8) River in Europe 9) Romanian river 10) Romanian waterway 11) Romanian watercourse 12) Tributary of the Danube 13) Watercourse in Europe 
Found on 
https://www.crosswordclues.com/clue/leitha

 The Leitha (Leitha; Hungarian: Lajta, Lajtha, formerly Sár(-víz); Czech and Slovak: Litava) is a river in Austria and Hungary, a right tributary of the Danube. ==Etymology== The Lithaha River in the Carolingian Avar March was first mentioned in an 833 deed issued by Louis the German, son of the Carolingian emperor Louis the Pious and ruler over ...
Found on 
http://en.wikipedia.org/wiki/Leitha
  No exact match found.