http://www.junesuckerrecovery.org/

This will help you understand the reason for the project a little better.

Again, it's much bigger than the June Sucker. Most people don't understand what a gem Utah lake was before Europeans showed up. It was a beautiful clear lake. Bonneville Cutthroat up to 40 pounds were caught in crystal clear water. These incredible fish ran all the way up the Provo and other Utah Lake tributaries, and all the way down the Jordan through the SL valley to the Great Salt Lake. The species was so numerous that a commercial fishery existed at one point. Cutts were being hauled in by the boatload. It didn't take long for the population to crash. Once that occurred, other non-native and invasive species were introduced to provide an alternative commercial and recreational fishery. The asain carp is the species that thrived more than any other. The carp is a bottom feeding vegetarian. Utah Lake is such prime habitat (shallow, warm) for the carp that populations exploded, and the carp ate every bit of vegetation off the lake bottom. When it gets windy on UL, the now silty bottom gets stirred up, leading to the current murky and disgusting water conditions.

Federal money from the ESA is currently paying for an operation on UL that is netting carp by the boatload. The goal is to remove enough carp that vegetation on the bottom can recover, which will improve water quality. It is believed that the removal of enough carp, and the right balance of predatory species that will pray on the carp (Walleye, White Bass, Channel Catfish, even Pike or Tiger Musky) will be able to keep the carp populations in check and lead to better water quality and increased recreational use. The theory is that if you remove enough carp and introduce enough predators, water quality will improve and Utah Lake will become a destination again.

This plan has worked on other smaller waters. Utah lake will never improve enough to to be able to hold Trout again. That is clear. But if this works, in 10 or 15 years the lake should be a much more enjoyable, useful place than it is now.