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

Aquatic Invasive Species - Jefferson County

Location:

Aquatic invasive species (AIS) records are assigned statuses of "verified", "observed", or "no longer observed" based on AIS Status Guidance. In general, "verified" populations are established and have been verified by a taxonomic expert. Populations with the "observed" status have not been verified by a taxonomic expert or do not have established populations. Populations with the "no longer observed" status include populations where a reproducing population did not establish. Our inventories are not necessarily exhaustive so it is important to report occurrences. To report new discoveries visit: http://dnr.wi.gov/topic/Invasives/report.html. See the Aquatic Invasive Species Guidance for information on how statuses are assigned. Personally identifiable information on data collection forms may be provided to requesters to the extent required by Wisconsin's Open Records Law [ss. 19.31-19.39, Wis. Stats.].

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Waterbody NameWaterbody ID Code (WBIC)Invasive Species
Ashippun River853800Rusty Crayfish
Bark River813500Curly-Leaf Pondweed, Phragmites (non-native), Purple Loosestrife, Rusty Crayfish
Blue Spring Lake819800Banded Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Hybrid Eurasian / Northern Water-Milfoil
Golden Lake775900Curly-Leaf Pondweed, Eurasian Water-Milfoil, Hybrid Eurasian / Northern Water-Milfoil, Purple Loosestrife, Zebra Mussel
Johnson Creek846700Curly-Leaf Pondweed, Rusty Crayfish
Koshkonong Creek808800Rusty Crayfish
Lake Koshkonong808700Curly-Leaf Pondweed, Flowering Rush, Zebra Mussel
Lake Ripley809600Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Hybrid Eurasian / Northern Water-Milfoil, Phragmites (non-native), Zebra Mussel
Mud Lake830800Curly-Leaf Pondweed
Oconomowoc River848200Curly-Leaf Pondweed, Reed Manna Grass, Rusty Crayfish, Zebra Mussel
Red Cedar Lake813100Purple Loosestrife
Rock Creek830100Banded Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Rusty Crayfish, Yellow Iris
Rock Lake830700Banded Mystery Snail, Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Hybrid Eurasian / Northern Water-Milfoil, Yellow Iris, Zebra Mussel
Rock River788800Flowering Rush, Purple Loosestrife, Yellow Iris
Rome Mill Pond824400Curly-Leaf Pondweed, Eurasian Water-Milfoil, Purple Loosestrife
Spring Lake820800Curly-Leaf Pondweed, Eurasian Water-Milfoil, Purple Loosestrife
Stony Brook837600Curly-Leaf Pondweed, Purple Loosestrife, Rusty Crayfish
Unnamed809500Chinese Mystery Snail, Curly-Leaf Pondweed, Zebra Mussel
Unnamed824500Purple Loosestrife
Unnamed830600Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Yellow Iris
Unnamed837700Reed Manna Grass
Unnamed853700Reed Manna Grass
Unnamed4000015Banded Mystery Snail, Yellow Iris
Unnamed5033535Curly-Leaf Pondweed
Unnamed5034408Reed Manna Grass
Unnamed5035204Reed Manna Grass
Unnamed5035899Phragmites (non-native)
Unnamed5037657Phragmites (non-native)
Unnamed5037693Phragmites (non-native)
Unnamed5037738Phragmites (non-native)
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Species currently tracked on these lists are: Asiatic Clam (Corbicula), Banded Mystery Snail, Bighead Carp, Brittle Waternymph, Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Faucet Snail, Fishhook Waterflea, Flowering Rush, Freshwater Jellyfish, Giant hogweed (Heracleum mantegazzianum), Graceful Cattail, Grass Carp, Hybrid Eurasian / Northern Water-Milfoil, Japanese Hops, Japanese Knotweed, Japanese Mystery Snail, Java Waterdrop / Vietnamese Water Celery, New Zealand Mudsnail, Ornamental water lilies (non-native Nymphaea sp.) , Phragmites (non-native), Purple Loosestrife, Quagga Mussel, Queen of the meadow (Filipendula ulmaria), Rainbow Smelt, Red Swamp Crayfish, Reed Manna Grass, Round Goby, Rusty Crayfish, Seaside Goldenrod, Silver Carp, Southern Cattail, Spiny Naiad, Spiny Waterflea, Starry Stonewort, Water Hyacinth, Water Lettuce, Western Mosquitofish, Yellow Floating Heart, Yellow Iris, and Zebra Mussel.

* Observed – This is a record that has been observed in the field, but a specimen has not been verified by a taxonomic expert or an established population has not been found within the waterbody. Only dead AIS or few individuals of one age class have been observed, not an established breeding population. This will include dead individuals observed outside their growing season that will need to be revisited during target times to verify. This also includes historic monitoring data that has not been verified by a taxonomic expert.

** Purple Loosestrife - DNR has only a partial list of locations. For more extensive data, visit the Great Lakes Indian Fish and Wildlife Commission (GLIFWC) website [exit DNR].

** Fish species - This web page only has a partial list of locations. For more extensive data, visit the Wisconsin Department of Natural Resources Map of Distribution of WI Fish Species [exit DNR].