Sorry to hear of your flooding. Is that the only damage you've sustained?

I'm no expert on pond management, but I'd wager a guess some of your catfish and minnows you stocked in the pond are still there.
How many of either would be a wild guess. However, any and all species of fish found in the Brazos and in other flooded ponds could now be in yours!

So, if you only want cats and minnows, you'll have to observe, fish, electroshock to determine that's all you have. In the event you find other species incompatible with your goals, you'd have to consider how to eliminate them. Renovating the pond with rotenone or lime, draining it, or catching the offenders will be some options.

Keep us posted. We'll be interested in following along on your journey.