Okay Goosehunter I contacted three CO officers about this topic hear is the same answer they all gave.
As far as the DNR is concerned, you can hunt on any lake in the State as long as you are partially concealed in Natural Vegetation. Waterfowl hunting does not have any restrictions as far as how many feet you would need to be from a house. If there were restrictions, no one could hunt waterfowl on any body of water in Minnesota because there are always houses too close to the water!
If the lake is within a City Limit, you may need to check with that City to see if they have ordinances against hunting waterfowl. You can usually find their ordinances on their website(s).
So be safe out there!