Asian Carp
Thank YOU for taking time to be part of the solution! Read here how your involvement is making a difference.
As you read this, thousands of Asian carp are swimming toward our Great Lakes. The Illinois River is already infested, and this invasive species has been found in other rivers flowing into Lake Michigan and Lake Erie.
If they become established, our $7 billion fishing industry would be at risk along with many of the ways we enjoy our favorite lakes and rivers.
As of today, Asian carp have NOT made a home in our Great Lakes, which means we still have time to stop them. But we cannot wait any longer to act—there is too much at stake. We must permanently separate the Great Lakes and Mississippi River waterways to prevent entry of these huge carp and other invasive species.
If we fail to act now, the Great Lakes may never recover from this invasion.
See our FACT SHEET about how studies show current protection efforts by the Army Corps of Engineers will not stop the Asain carp. This threat requires immediate solutions, while the Corps’ timeline and actions do not. One of the best ways to influence the Corps is through Congress, which authorizes and mandates its activities and funding. The Great Lakes are our responsibility.
Your Voice and Actions are Helping to Keep the Carp Out

What are Asian carp?
There are two species of Asian carp making their way to Lake Michigan-bighead carp and silver carp. The Asian carp were imported by catfish farmers in the 1970s to remove algae and other nutrients out of their ponds. During large floods in the early 1990s, many of the catfish farm ponds overflowed their banks, and the Asian carp were released into local waterways connected to the Mississippi River.
What's the big deal?
Both species are well suited for our climate. They consume vast amounts of food and reproduce quickly and are wiping out native fish where they thrive. In Illinois, the Asian carp population has doubled every year since it has been in the Illinois River. The silver carp can jump 10 feet high which has resulted in numerous injuries to boaters. If the Asian carp does make it to the Lake Michigan it will:
- Push out native fish populations-lake perch, whitefish and walleye and become the dominant species
- Impact habitat for waterfowl
- Harm our economy by reducing spending on fishing, hunting, and boating - which is over a 7 billon dollar industry annually many depend on
- Make boating and swimming unsafe
The only solution that will best protect our Great Lakes for the long term is to permanently separate the Great Lakes and Mississippi River ecosystems to prevent entry of the carp and other invasive species.
News and Headlines
Great Lakes–Mississippi River Separation is Possible, Practical and Preventive
Before taking all the public's comments, Corps announce no need to speed up efforts on carp
River Renaissance: New Report Details Separation to Keep Carp Out of Great Lakes
Groups Want Action on Asian Carp Problem
Great Lakes NGOs Support Appointment of Federal Asian Carp Director
Hurting Recreational Fishing Economy
View a video of Shedd Aquarium expert on Asian carp
Lawmakers seek to speed efforts to stop Asian carp
Indiana plans barrier to stop Asian carp invasion
Great Lakes mayors and governors are helping work toward a solution
Five states sue over Asian carp
Carp Captured: Invasive Bighead Carp Caught Near Lake Michigan
CHICAGO (June 23, 2010) – The nightmare scenario of Asian carp entering the Great Lakes through Chicago waterways is closer to reality as the Asian Carp Regional Coordinating Committee announced today that they had captured an invasive bighead carp in Lake Calumet, 6 miles away from Lake Michigan. The fish’s capture bolsters repeated environmental DNA tests which have shown that the carp have evaded an electrical barrier intended to prevent their movement out of canals artificially connecting the Great Lakes and Mississippi River system. Scientists and government regulators agree that the invasive fish pose a dire threat to the Lakes because of their size and voracious appetites.
Environmental groups throughout the Great Lakes have been advocating for quick action to impede the carp’s headlong swim towards Lake Michigan, even as federal officials and business interests have questioned the validity of cutting edge science that pointed to the invasive species’ presence. Today’s news brings a renewed call for more agile efforts to prevent the carp’s movement. Many organizations have called for hydrologic separation of the two systems to ensure the movement of the carp and other invasive species is stopped. The U.S. Army Corps of Engineers recently said that a study of this solution will take five to seven years.
"This is a great example of how as we talk about possible solutions the fish keep on swimming," said Jill Ryan, Executive Director of Freshwater Future. "Now is the time to move to hydrologically separate the Great Lakes watershed from the Mississippi watershed. To make this happen we need everyone to demand action."
Keep Asian Carp Out of the Great Lakes




