Hello everyone, I remember seeing a show when I was younger that involved a boy being on a river and there was some sort of river creature trying to get on the other side of a dam or flood gate. I only remember certain things like there was an old man who told the boy of various people seeing the creature over the years and at the end of the show the creature was allowed to cross to the other side with another of its kind. Does anyone know what this show was or am I only imagining it?