Dave,
Thanks for heading me in the right direction. I'll give them a call.
I will be placing many rock piles and brushpiles in the pond. Those big oaks are pushed into a pile on the backside of the dam. Right now, I'm trying to stay out of the builders way and let them get everything up to grade. The next big project is the siphon pipe.

I started with nothing, and still have most of it.