[mtbopfuyn]

But they escaped in floodwaters in 1993, 1995 and 2002.

So they didn't add safety measures after the '93 flood. Or the '95 flood. Or, most likely, the '02 flood. Heck by now, are there any silver carp still in captivity?

[carptracker]

There are silver carp still in captivity in at least one aquaculture facility that I know of in Arkansas. There are bighead carp in aquaculture facilities all over the place. It might be too late to worry about those - (closing the gate after the horses got out, and there are people making part of their livlihood from them), but it would be wise at a minimum to keep them out of drainages where they have not established a population.