Minnesota officials say tests have detected signs of Asian carp north of the Coon Rapids dam on the Mississippi River, the last major physical barrier to their spread northward.
Governor Mark Dayton says it's urgent for Minnesota to stop invasive Asian carp from spreading widely into its waters. Dayton convened what was billed as a "carp summit" Monday, where a Department of Natural Resources specialist outlined an action plan that would include permanently closing the Upper St. Anthony Falls lock and dam to prevent the fish from getting upstream.
The search for invasive Asian carp in the St. Croix and Mississippi rivers enters a new phase in the coming week. The Minnesota Department of Natural Resources and other agencies will conduct a new round of environmental DNA testing, and this time it will include the Minnesota River.
Two more water samples from near the Great Lakes have been found to contain genetic material from invasive Asian carp. Federal say the samples were taken from Chicago's Lake Calumet, where the Army Corps of Engineers reported seven other positive DNA hits earlier this week.
You might be aware of the giant fish starting to become more common in North American waterways. They're called Asian carp - they can weigh as much as 100 lbs, eat native plant and animal species, and leap great heights out of the water, creating the potential for harm to boaters and jet-skiers.