Trailgal, I wouldn't recommend parking at the dam. Several of my friends who have parked there have had their cars vandalized, including pretty recently. One friend had all four tires slashed, and another had all windows broken and stuff stolen. So don't take a chance. The hike to the springs is also much longer. Consider the Bradford Ridge Trail if you are looking for an alternative.
http://www.deepcreekvolunteers.com/directions.htm#Alternate_Route