The ATV park at Deepwater is currently closed due to the elevated level of Truman Lake. The park rangers I talked to claimed it was posted on their website, but I didn't find anything stating that the whole area was closed.
Sooooo......as of right now, the only way I can think of would be to call the COE office in Warsaw.
15968 Truman Road
Warsaw Mo 65355
Phone: 660-438-7317
Not that anyone at that office will be able or willing to give you an intelligent answer,:banghead: but it's better than driving down there just to be turned away.
Edit: Did some more looking around on the website, and found the info under Public Affairs.