Bill, thanks for the tip on checking the NRCS site. The place we are looking at is actually in Clinton County, and I found a PDF file for the soil survey, which matches the soil map I had found before on the County GIS site. It was helpful because the soil survey describes each of the soil types. It doesn't specifically say if any of them are or are not suited to pond construction, but it does address how well they drain.
I think when we move I'll try to have someone from NRCS look at the map with me and give me some advice. Thanks guys!
