[out:xml][timeout:99999][maxsize:2073741824];
(
  way["natural"="water"](35.5,13,50.8,48.7);
  relation["natural"="water"](35.5,13,50.8,48.7);
  way["waterway"="riverbank"](35.5,13,50.8,48.7);
  relation["waterway"="riverbank"](35.5,13,50.8,48.7);
);
(._;>;);
out body;