I am planning a similar project. I hope to run the line below frost and then come up and dump it into a much larger pipe that is buried into soil so it will have some freeze protection. The large pipe would run through stones placed to hide the end of the pipe, and the water would run over some smaller stones for a short distance to simulate a stream. I also do not know how to calculate a trout pond size from the GPM flow from a well in my area (especially to account for 100+ temps).
