University of Notre Dame researchers have helped find the solution needed to keep Asian carp from reaching Lake Michigan.
Researchers think placing dam-like structures in Chicago's waterways is the best method.
They say physically separating the lake from the Mississippi River watershed would prevent 95 to 100 percent of Asian carp incursions. While an electric barrier system would have a success rate of 85 to 95 percent.
Other methods such as using noisemakers or strobe lights to scare away the carp would also help.
The study was released Wednesday.
It was conducted by the University of Notre Dame along with the U.S. Forest Service and Resources for the Future, an independent research institution.
Their conclusions were based on a survey of experts in fisheries management, aquatic nuisance species and related fields.
Asian carp in the great lakes would have a disastrous effect on the ecosystem.