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Grass Carp present in Lake Erie threaten all the Great Lakes at a potential cost of $1.8 Billion annually- Ohio and Michigan states refusing to eradicate.

The very large and highly invasive Grass Carp are now present in Lake Erie and reproducing in two Ohio rivers. In addition, they have made their way into the Detroit and St. Clair rivers and have been caught in Lake Huron. Georgian Bay and the North Channel are next. These fish will rip apart our high-quality wetlands and destroy the spawning and nursery habitat vital to our native fishes.

A 2017 binational, peer-reviewed Risk Assessment completed by Fisheries and Oceans Canada and the U.S. Geological Survey determined that the spread of Grass Carp into Lake Huron would likely occur within 10 years but stated: "If the rate of arrival increases, the onset and magnitude of risk will increase." 

Only one year later, they are in Lake Huron in unknown numbers!

That same Risk Assessment found that, of all four species of Asian carps now found in US waters adjacent to the Great Lakes, Grass Carp will do the most harm to the Great Lakes ecology.

The window of opportunity to eradicate invasive Grass Carp in Lake Erie is diminishing as they continue to spawn and their numbers increase.”

A joint US/Canada assessment carried out in 2017 found in the five Great Lakes up to 1.2 million acres of wetlands containing submerged aquatic plants. Each acre of wetland provides $1,500.00 in ecological services on an annual basis. If all the Great Lakes are invaded by Grass Carp, the cost of the loss of these ecological services could mount to $1.8 Billion per year. Can we afford to let this happen?

We need your help. Please sign our petition and ask your friends and family to sign and share our petition by email and on social media.

We, the undersigned, petition the US EPA and the states of Ohio and Michigan to respect the Mutual Aid Agreement signed by all Great Lakes jurisdictions, to declare the Grass Carp issue to be a crisis, and to request assistance from the Great Lakes Mutual Aid Agreement signatories to undertake a full-scale eradication program immediately.


For those of you who want more information on Grass Carp and this serious problem, visit our recent Grass Carp Press Release.

For information on our work visit Georgian Bay Great Lakes Foundation website.

Click here to make  a secure online Donation to Georgian Bay Great Lakes Foundation

To donate to our projects by mail, please make out your cheque to Huronia Community Foundation and mark in the notation line “for Georgian BayGraet Lakes Foundation (GBGLF)”.
P.O. Box 324, Midland, ,Ontario, L4R 4L1.

GBGLF is an Ontario registered not-for profit affiliated* with the federally registered charity, Huronia Community Foundation,