Talk about urban fishing!
One can fish Rock Creek under the Lauzun’s Legion Bridge. There’s a slab where one can drop a line into the water about eight feet below. Pumpkinseed are plentiful, and bluegill also can be found. (Both can be used as bait for catfish.) They hit worms very hard, and can be landed with bread or dough balls too. A bobber can scare them away, so consider just dangling your bait in there and watching them come and strike.
Go here when the weather is above 50 degrees, otherwise you may not find fish here—the water is only a few feet deep. (Come winter fish move to deeper water that is less brisk.)
I have frequently seen small-mouth bass and small catfish (maybe 15 inches) in the water, but they have proven very leary to respond to the various lures and baits I have tossed their way.