Coventina is a Celtic god that stands guard over these, and Kakaku does the
Coventina is a Celtic god that stands guard over these, and Kakaku does the same in Shinto myth. Bing Yi is a divine ruler of all of them in Chinese myth as is Oshun under Yoruba custom. Yam or Yammu is a powerful primeval god of these in Canaanite myth, while Hapi is a very important part of Egyptian myth. Scamander and Achelous are pretty much just personifications of these. Similar to fertility gods, for ten points, all of these gods and the Hindu god Ganga look over what natural landform, of which there are five in the Greek underworld.
Coventina is a Celtic god that stands guard over these, and Kakaku does the same in Shinto myth.
{river}s or {river god}s (accept {sea}s or {sea god}s or {ocean}s or {ocean god}s until Hapi)