Don't forget North Carolina. But I don't know if I would call any of these great dive quarries, they are places to get wet and practice skills when a trip to the coast is not practical. The visibility is not the greatest but some of these are decent with depths ranging from around 65 feet to a little over 100 ft.
North Carolina
Blue Stone Dive Resort (Thomasville, NC) weekends only April -November except by appointment during the week and off-season for groups of 8 or more.
Fantasy Lake (Rolesville, NC. near Raleigh)
Mystery Lake (Wendall, NC near Raleigh)
Lake Hickory (Hickory, NC)
We also have the NC PDRA (Piedmont Dive & Rescue Association) which owns 3 quarries in the state. There is an annual fee for membership which they send each member a key that fits the lock at all 3 quarries with 25/7/365 access. Overnight camping is allowed but the only facilities are port-a-potties, changing rooms, and staging areas. Each members is allowed to take up to 10 different guests twice each per year.
Also good for a freshwater rinse on the drive back to Indiana from Morehead City for some wreck diving!
Is Blue Stone the one with the tram that takes you around the quarry from the office/parking area with your gear?