Find Leak in Waterfall

Joe Spinelli doesn't like surprises even though he lives in Surprise, AZ. He's also pithy.

"Who do I call to find a leak in my waterfall in my yard?"

Here's Joe's pond and waterfall. Photo credit: Joe Spinelli

Here's my answer:

Joe, I don't know that I'd call anyone just yet. Why not try to find it yourself?

I would turn off the pump and allow the water to just sit in the pool basin. Allow it to drop to it's lowest level where you're no longer loosing water.

Move the rocks away from the rubber liner and look closely for a slit, hole, etc.

The problem is right along the water line.