BradyD and I went riding through the south part of Michaux yesterday. It was just muddyy enough for some added fun, without causing any problems.
Here are our bikes (his xt500 and my xl350) at the big overlook on Oak Road:
This pic was taken on Hawbottom Road in Frederick Md. Hawbottom is surrounded by natural springs, so the road is always flooded out... which always makes it fun: