An initial survey of 20 Dakota County lakes and ponds identified two different invasive species in more than a dozen lakes.
Curly leaf pondweed was found in eight lakes at Lebanon Hills, Whitetail Woods and Thompson parks, and Eurasian water milfoil was found in six lakes at Lebanon Hills. Additional surveying later this summer may find more.
Both plants are not native to the United States. The Minnesota Department of Natural Resources suggests herbicides and harvesting as control methods, and offers grants to support local efforts.
The consultant conducting the Dakota County lake and pond surveys will release a final report with possible treatment and management options.
Emma Nelson
Prior Lake
City, tribe to team on water treatment plant
The Prior Lake City Council voted to work together with the Shakopee Mdewakanton Sioux Community on building a joint water treatment plant.
The new plant would cost about $19.4 million to build and is expected to start operating by 2019. Under the agreement, the tribe would pay $10.8 million and the city would pay $8.6 million. By operating a joint facility, the city would save $6 million while the tribe would save $3.5 million, according to the city's Public Works and Natural Resources Department.
The council's approval Monday allows city staff to incorporate Prior Lake's needs into the design for a new plant.
"Due to redundancies that are built into these types of systems, there are significant cost savings," department Director Katy Gehler said.