[out:xml][timeout:99999][maxsize:2073741824];
(
  way["natural"="water"](-59.4,-90.3,-23.9,-29.9);
  relation["natural"="water"](-59.4,-90.3,-23.9,-29.9);
  way["waterway"="riverbank"](-59.4,-90.3,-23.9,-29.9);
  relation["waterway"="riverbank"](-59.4,-90.3,-23.9,-29.9);
);
(._;>;);
out body;