Types of Lakes

[jooleyen]

I'm trying to understand the main types of lakes around here, which include drainage lakes, seepage lakes, and natural springs.
I do understand how important current is and how it positions fish on/near structure, but I'm trying to figure out how the type of lake has an affect on current. I see that drainage lakes have inflows via stream and outflows, and impoundments have dams.

Which lakes actually have dams? Does the type of lake dictate this?

Also, how can I find out who operates the dam at my lake, and how to contact them? I called the WI DNR, but they couldn't give me a good answer. They transferred me to some lady who didn't even answer.

Thanks