Much appreciated Noel. My estimate of inflow is from 35 - 50 gallons per minute and it is very consistent all year. A 2" pipe can flow a lot of water with just a little head pressure. The pond doesn't hold water very well if the inflow pipe gets blocked but its possible to regulate the flow rate down if there were some benefit though, I suspect doing that would create an issue with with the pipe being more prone to clogging given how much leaf and sediment debris comes down the creek.

I'll be interested to hear what the experts recommend for the best self sustaining variety of fish I should be able to maintain. I have called one of the local stocking companies and one problem I may have is the minimum quantity order for my small pond. Their min quantity of 3" - 4" coppernose bluegill is 500. Don't think an 1/8 acre can take that many.

Bruce.