"So now I have a new bump in the road. I did an overlay with google earth and the plat map and it appears the pond is shared with two properties behind me. Ugh..."

That is a real and unpredictable issue. May never be a problem, but you have no way to know.

Excerpt from Robert Crais' "The Monkey's Raincoat:"
"She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."