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Lake Koshkonong Photo

Lake Koshkonong Photo
Photo by Wisconsin DNR

Contact information
For information on Lakes in Wisconsin, contact:
Wisconsin DNR Lakes
Division of Water
Bureau of Water Quality
DNR Contacts for Lake Koshkonong

Rock River-Koshkonong Association [exit DNR]

Rock-Koshkonong Lake District [exit DNR]

Find A Lake > Dane County > Lake Koshkonong

Lake Koshkonong
Dane, Rock, Jefferson County, 10595 Acres

Invasive Species

SpeciesStatusYear FoundDetails
Curly-Leaf PondweedVerifiedDetails
Flowering RushVerified2016Details
Flowering RushVerified and Vouchered2016Details
Flowering RushVerified and Vouchered2016Details
Flowering RushVerified and Vouchered2016Details
Zebra MusselVerified2009Details

* About Invasive Species: Disclaimer: 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: https://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.].