Well, Saturday morning, we looked at the site and felt another week of good drying weather would have us building the pond. Then we got almost another 3" of the wet stuff, by Sunday night.
Oh well, at least, by now, I know where all my drainage issues are and how water flows over every square foot of the property. It makes the plan better. I am no longer worried about not having enough watershed for the .5 to .75 acre pond. We can do some contouring to pick up another 5 acres of watershed, too.