We have an active artesian well on our property. It drains off into the
local lake in a 2" pipe 24X7X365, winter, summer, etc.

I would like to build a pond and water fall system and use the artesian
water to supply the system.

Questions:
Water is about 55 degrees, is this too cold to support plant and fish life?
With this steady flow, I should not need a pump or filters (right?)
I would like to drain the pond into the lake.

What I am worried about is if the pond floods, the ornamental fish and
vegetation may get spread into the lake.

Any suggestions? I know I have a 900 acre pond in the back yard why do I
want a pond? What else can I do with all that wasted water?

Thanks
John Lange