Usually a heavy action rod in a seven foot or greater length will work well enough. Bait casting rods usually work very well, and they are very strong.  Spool your reel with anything from a thirty to a eighty pound braided line.  Use a 6/0 to a 10/0 heavy wired, circle hook.

Remember, your line is going to take a beating, so tie your knots extremely well, and check both your knots and the condition of your line often.  A Palomar knot will work very well in most cases, because it creates a strong union that holds well and normally does not weaken your line.  

Just remember that, while dam fishing can yield huge catches of monster sized catfish, the current that makes it so productive to fish also makes it dangerous for anglers.  Even if you are fishing the banks, it is a smart move to wear a life vest.  Use caution when boating, and watch your drift.  It is always better to be safe than sorry.

To get the full "Dam Fishing For Catfish" article you'll need to download it here.