Contact information

For information on Lakes in Wisconsin, contact:

DNR SWIMS
Division of Water
Bureau of Water Quality

Aquatic Invasive Species Contacts

• All - New 2020
• All - New 2021
• All - New 2022
• All - New 2023

• Asiatic Clam (Corbicula)
• Banded Mystery Snail
• Bloody Shrimp
• Bohemian knotweed (Polygonum bohemicum)
• Brazilian Waterweed
• Brittle Waternymph
• Butterfly dock
• Chinese Mystery Snail
• Curly-Leaf Pondweed
• Daphnia lumholtzii
• Eurasian Water-Milfoil
• European Frogbit
• Faucet Snail
• Fishhook Waterflea
• Flowering Rush
• Giant hogweed (Heracleum mantegazzianum)
• Giant knotweed (Polygonum sachalinense)
• Golden Creeper
• Graceful Cattail
• Hairy Willow Herb
• Hybrid Eurasian / Northern Water-Milfoil
• Hydrilla
• Japanese Hops
• Japanese Mystery Snail
• Japanese knotweed (Fallopia japonica)
• Japanese stiltgrass (Microstegium vimineum)
• Java Waterdrop / Vietnamese Water Celery
• Lesser celandine (Ranunculus ficaria)
• New Zealand Mudsnail
• Ornamental water lilies (non-native Nymphaea sp.)
• Parrot Feather
• Pennywort
• Phragmites (non-native)
• Poison Hemlock
• Policeman’s helmet (Impatiens glandulifera)
• Purple Loosestrife
• Quagga Mussel
• Queen of the meadow (Filipendula ulmaria)
• Rainbow Smelt
• Red Swamp Crayfish
• Reed Manna Grass
• Round Goby
• Rusty Crayfish
• Sacred Lotus
• Seaside Goldenrod
• Southern Cattail
• Spiny Naiad
• Spiny Waterflea
• Starry Stonewort
• Water Hyacinth
• Water Lettuce
• Western Mosquitofish
• Yellow Floating Heart
• Yellow Iris
• Zebra Mussel

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• Water Resources

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