Aquatic Invasive Species
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For information on Lakes in Wisconsin, contact:
DNR Lake
Division of Water
Bureau of Water Quality
Clean Boats, Clean Waters Contacts

Upper Oconomowoc Lake -- Access

Location:

Upper Oconomowoc Lake has the following aquatic invasive species:
Curly-Leaf Pondweed, Eurasian Water-Milfoil, Purple Loosestrife, Zebra Mussel To Excel
DatePrior WaterbodyCountyWBICKnown Aquatic Invasive Species
06/19/2020Silver Lake Waukesha County0Information Not Available
07/21/2018Pewaukee LakeWaukesha County772000Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Purple Loosestrife, Starry Stonewort, Zebra Mussel
09/02/2013Eagle Spring LakeWalworth County768600Asiatic Clam (Corbicula), Curly-Leaf Pondweed, Eurasian Water-Milfoil, Zebra Mussel
09/02/2013Okauchee LakeWaukesha County850300Banded Mystery Snail, Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Hybrid Eurasian / Northern Water-Milfoil, Purple Loosestrife, Starry Stonewort, Zebra Mussel
08/12/2012Lac La BelleWaukesha County848800Asiatic Clam (Corbicula)
08/12/2012Pewaukee LakeWaukesha County772000Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Purple Loosestrife, Starry Stonewort, Zebra Mussel
07/31/2012Okauchee LakeWaukesha County850300Banded Mystery Snail, Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Hybrid Eurasian / Northern Water-Milfoil, Purple Loosestrife, Starry Stonewort, Zebra Mussel