[out:xml][timeout:99999][maxsize:2073741824];
(
  way["natural"="water"](50.5,148.4,72.5,179.9);
  relation["natural"="water"](50.5,148.4,72.5,179.9);
  way["waterway"="riverbank"](50.5,148.4,72.5,179.9);
  relation["waterway"="riverbank"](50.5,148.4,72.5,179.9);
);
(._;>;);
out body;