Welcome to the forum future! You are asking the right questions and in the right forum. I can't answer your question, but an expert should be along who can.
You mentioned the soil type needs to be determined. I think I'd make this a priority to see how deep you need to go. That might help you make your To Dam Or Not To Dam question.
I guess I need to ask the most basic question there is.... How do I determine how deep to go? I was thinking 6-8ft, but dont know for sure.
A few questions before that can be definitively answered. Different species of fish require different habitats and depth, so what species were you planning on stocking. LMB/BG? Your estimate, 6-8 feet, down south, is probably ok, but let an expert verify that. See if you can drill a hole into the ground, however deep you can go, and fill with water and see if it holds, or if it holds at a certain depth. Might help see if there's good dirt down there.
