I'd need more info to make a judgment call. Can you get info from the land owner?
1. When was it stocked? They may be young fish that have recently been stocked. Ask the land owner. I'm assuming that fishing went with the hunting lease.
2. How big is the pond? Remember that the playing surface of a football field is a little less than an acre. And, it will most likely be a lot smaller by opening day of dove season.
3. Any other fish in it? Bluegills, bass, etc? Are they channels or bullheads?
Generally, a pond/tank/water hole will support about 100 channel cats per surface acre with bluegills around for forage. And, they are generally a put and take fish. They seldom pull off a successful spawn. They also wise up pretty quickly to fishing pressure.