I heard a biologist talking on the radio yesterday on my way home from work - he was talking about the possibility of poisoning a five mile stretch of the river below one of the electric fences (even though a few of the Asian carp had been found above the fence). I didn't catch the whole interview, but it sounded like this idea is under serious consideration if not already in the works.

As I understand it the "poison" is essentially non-toxic for us. Poisoning moving water generally doesn't work very well. At best it may only provide a momentary buffer zone.

I doubt there will ever be a cure for this problem. Very, very sad. The only thing we can learn from this is that game farming and aquaculture must be extremely heavily monitored. The carp problem can be traced to a fish farm operation in Louisiana that went belly up. The owner apparently opened the gates. I'm sorry, but private property rights mean nothing when the health of entire ecoysystems is at stake. I'm to the point of advocating a total ban on exotic species. The wild pig situation is tragic blight of epidemic proportions in many areas of the States now. Those things are not only dangerous and harmful to native species, they absolutely devastate the environment. One of them can make a meadow look like it was hit with saturation bombing. What fool ever thought he could introduce those things to his game farm operation and keep them on the place? Guess those guys had never been to a real farm with pigs. Fences don't mean anything to those critters. Look closely at the farm-raised salmon you're buying in the store. If it's Atlantic salmon (which are actually a trout) don't buy it! These operations on the West Coast are causing havoc with local fish populations. You can see stuff about this all over the net. Even in situations where Atlantic salmon were native (i.e. England and Scotland) the farming operations have decimated the wild stocks. NEVER, NEVER, NEVER move any fish to another area, whether or not they are exotic to North America or especially the area. Countless trout sport fisheries have been ruined all across North America because backyard bucket biologists introduced pike and smallmouth bass to waters where they were not native.

They should just weld the locks shut and fill it in. Should have never been opened up in the first place.