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DNR Contacts for Big Butternut Lake

Big Butternut Lake Management District [exit DNR]

Find A Lake > Polk County > Big Butternut Lake

Big Butternut Lake

Invasive Species

SpeciesStatusYear FoundDetails
Banded Mystery SnailVerified2013Details
Chinese Mystery SnailVerified2013Details
Curly-Leaf PondweedVerified and Vouchered1983Details
Purple LoosestrifeVerified2017Details

* 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.wisconsin.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.].