I called NRCS, but played it pretty nice and just asked what they could do to help me. So far it was just a couple phone conversations and providing a list of the registered excavators in the county. I just emailed them again specifically asking for help on watershed calculations so hopefully they agree to that.

I had the pipe in to mark water level drop for 1 day before it rained, first time in a couple months LoL. So it dropped about 3/8" during the 24 hours before it rained. We got 3.25" of rain last night and the water level in the pond went up 6.5". So that seems promising from a watershed/runoff perspective especially since the ground was so dry I'm sure a lot was soaked up that would normally be run off.