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

Lake Michigan -- Port Washington

Location:

Lake Michigan has the following aquatic invasive species:
Eurasian Water-Milfoil, Round Goby, Zebra Mussel To Excel
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DatePrior WaterbodyCountyWBICKnown Aquatic Invasive Species
07/21/2023Green BayBrown County0Information Not Available
06/04/2022WinnebagoWinnebago County0Information Not Available
06/04/2022WinnebagoWinnebago County0Information Not Available
06/04/2022WinnebagoWinnebago County0Information Not Available
06/04/2022Wolf RiverWinnebago County0Information Not Available
06/04/2022WinnebagoWinnebago County0Information Not Available
06/04/2022WinnebagoWinnebago County0Information Not Available
06/04/2022Wolf RiverWinnebago County0Information Not Available
06/04/2022WinnebagoWinnebago County0Information Not Available
06/04/2021Random LakeSheboygan County0Information Not Available
09/03/2018Random LakeSheboygan County30300Curly-Leaf Pondweed, Eurasian Water-Milfoil, Spiny Naiad, Zebra Mussel
09/03/2018Lake WinnebagoWinnebago County131100Asiatic Clam (Corbicula), Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Faucet Snail, Flowering Rush, Hybrid Eurasian / Northern Water-Milfoil, Phragmites (non-native), Purple Loosestrife, Rusty Crayfish, Spiny Waterflea, Zebra Mussel
09/03/2018Lake WinnebagoWinnebago County131100Asiatic Clam (Corbicula), Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Faucet Snail, Flowering Rush, Hybrid Eurasian / Northern Water-Milfoil, Phragmites (non-native), Purple Loosestrife, Rusty Crayfish, Spiny Waterflea, Zebra Mussel
09/03/2018Green LakeGreen Lake County146100Rusty Crayfish
09/03/2018Lake WinnebagoWinnebago County131100Asiatic Clam (Corbicula), Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Faucet Snail, Flowering Rush, Hybrid Eurasian / Northern Water-Milfoil, Phragmites (non-native), Purple Loosestrife, Rusty Crayfish, Spiny Waterflea, Zebra Mussel
09/03/2018Golden LakeWaukesha County775900Curly-Leaf Pondweed, Eurasian Water-Milfoil, Hybrid Eurasian / Northern Water-Milfoil, Purple Loosestrife, Zebra Mussel
08/14/2016Eagle RiverVilas County0Information Not Available
08/14/2016Lake Winnebago 131100Asiatic Clam (Corbicula), Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Faucet Snail, Flowering Rush, Hybrid Eurasian / Northern Water-Milfoil, Phragmites (non-native), Purple Loosestrife, Rusty Crayfish, Spiny Waterflea, Zebra Mussel
08/14/2016Little Saint Germain LakeVilas County1596300Banded Mystery Snail, Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil
07/31/2016Pine LakeOneida County1012200 
07/31/2016Lake KeesusWaukesha County852400Banded Mystery Snail, Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Hybrid Eurasian / Northern Water-Milfoil, Zebra Mussel
07/31/2016Okauchee LakeWaukesha County850300Banded Mystery Snail, Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Hybrid Eurasian / Northern Water-Milfoil, Purple Loosestrife, Starry Stonewort, Zebra Mussel
07/24/2016Lake Winnebago 131100Asiatic Clam (Corbicula), Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Faucet Snail, Flowering Rush, Hybrid Eurasian / Northern Water-Milfoil, Phragmites (non-native), Purple Loosestrife, Rusty Crayfish, Spiny Waterflea, Zebra Mussel
07/24/2016White Mound LakeSauk County1258100Curly-Leaf Pondweed, Eurasian Water-Milfoil
07/24/2016Delavan LakeWalworth County793600Banded Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Hybrid Eurasian / Northern Water-Milfoil, Ornamental water lilies (non-native Nymphaea sp.), Pennywort, Phragmites (non-native), Purple Loosestrife, Zebra Mussel
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