[HiTech RedNeck]

Is screening the canal not feasible? So as to catch every single carp that tries to swim up that way?

[SargeK]

It might come down to closing off the water and building a marine railway like the Big Chute.

Big Chute

I doubt though that the fish haven't already colonized Lake Michigan. Usually by the time the gubmint realizes there is a problem, let alone devises a solution and implements it past all of the bureaucratic rules, it is already a mile downstream of us. We are ruled by Vogons.

[RadiationRomeo]

Illinois wants the canal open to barge traffic so I don’t think a screen is possible.