Xref: kermit rec.ponds:114126

"Gareee?" wrote:

There are actually 4 watersources.. one runoff overflow, one spring, and
then below the pond, two more springs.

From what we've seen in the last 7 months, the springs never dry up.. and
never did many years ago, because if used to be part of a farm the used the
springs as water sources for the animals...

What is the water temp? If it is low enough, grow trout!

Koi like deep water, as long as you can make your pool deep enough for
them, you should be ok.