That sounds like a fun project, esshup!
Is there that much actual streamflow through the property? Or are they going to run a re-circulation system to bring the water back "uphill" to the 3/4 acre pond?
If there is that much streamflow, then is the pond owner just going to manage around the species episodically introduced by the native stream?
The stream flow will be strictly via electric water pumps. The 2 ponds will be on the same level so pumping water into one will cause it to eventually flow to the larger pond.
