[out:xml][timeout:99999][maxsize:2073741824];
(
  way["natural"="water"](50.6,41.9,81.9,84.6);
  relation["natural"="water"](50.6,41.9,81.9,84.6);
  way["waterway"="riverbank"](50.6,41.9,81.9,84.6);
  relation["waterway"="riverbank"](50.6,41.9,81.9,84.6);
);
(._;>;);
out body;