Minnesota,
Please don't get me wrong. My statement (what little I know about the wetland laws) does not mean I agree with them. From my experience the state and feds don't look at a wetland from the wildlife view point. They view it from the "filtering" of ground water. And by definition a wetland does not include game fish. On the positive side, if its not classed a wetland you should have no problem getting the required permits which I would suggest you do especially hearing about your neigbor. My place is located outside of Monicello.

PS - I have no experience with ponds that are not created from a dugout below the ground water table.