Using the overflow for the big pond is what I'm pondering, along with the benefits of the trout pond as a bonus. I have a well that is estimated at 112 gal/min, but only pump 32 gal/min as I am limited to a 1" water line at this time. The pump more than keeps up with evaporation on my 3 acre pond. Any idea if 32 gal/min would be suffient in a similiar size pond as yours? Im just trying to get an idea of how much money I may be looking at to make this happen.

I think it would be neat to have a small rock stream flowing from the small pond into the larger one. Obviously Id have to figure out a way to stop the fish from moving between ponds.