[out:xml][timeout:99999][maxsize:2073741824];
(
  way["natural"="water"](35.6,48.6,50.6,115.8);
  relation["natural"="water"](35.6,48.6,50.6,115.8);
  way["waterway"="riverbank"](35.6,48.6,50.6,115.8);
  relation["waterway"="riverbank"](35.6,48.6,50.6,115.8);
);
(._;>;);
out body;