Aquatic invasive species of Vilas County
List of the aquatic invasive species for Vilas County documented by Wisconsin DNR, updated in September 2025. See the DNR aquatic invasives website for further details.
| Waterbody | Species | County | Date First Found | Details |
|---|---|---|---|---|
| Adams Lake | Banded Mystery Snail | Vilas | 12/31/2005 | Details |
| Alder Lake | Banded Mystery Snail | Vilas | 08/13/2013 | Details |
| Alder Lake | Chinese Mystery Snail | Vilas | 08/18/2007 | Details |
| Alder Lake | Curly-Leaf Pondweed | Vilas | 06/17/2025 | Details |
| Alder Lake | Rusty Crayfish | Vilas | 12/31/1975 | Details |
| Aldridge Lake | Chinese Mystery Snail | Oneida, Vilas | 08/08/2013 | Details |
| Allequash Creek | Rusty Crayfish | Vilas | 12/31/2006 | Details |
| Allequash Lake | Banded Mystery Snail | Vilas | 08/05/2015 | Details |
| Allequash Lake | Purple Loosestrife | Vilas | 08/12/2014 | Details |
| Allequash Lake | Chinese Mystery Snail | Vilas | 12/31/2004 | Details |
| Alma Lake | Chinese Mystery Snail | Vilas | 08/19/2014 | Details |
| Amik Lake | Chinese Mystery Snail | Vilas | 06/27/2019 | Details |
| Amik Lake | Rusty Crayfish | Vilas | 06/27/2019 | Details |
| Anabelle Lake | Purple Loosestrife | Vilas | 06/10/2019 | Details |
| Anderson Lake | Rainbow Smelt | Vilas | 12/31/2000 | Details |
| Anderson Lake | Rusty Crayfish | Vilas | 08/17/2010 | Details |
| Anne Lake | Rusty Crayfish | Vilas | 12/31/1975 | Details |
| Anvil Lake | Curly-Leaf Pondweed | Vilas | 07/03/2013 | Details |
| Anvil Lake | Eurasian Water-Milfoil | Vilas | 07/10/2012 | Details |
| Anvil Lake | Banded Mystery Snail | Vilas | 07/10/2006 | Details |
| Anvil Lake | Chinese Mystery Snail | Vilas | 07/10/2006 | Details |
| Anvil Lake | Rusty Crayfish | Vilas | 12/31/1982 | Details |
| Armour Lake | Yellow Iris | Vilas | 05/27/2020 | Details |
| Arrowhead Lake | Hybrid Eurasian / Northern Water-Milfoil | Vilas | 01/01/2010 | Details |
| Arrowhead Lake | Chinese Mystery Snail | Vilas | 06/22/2006 | Details |
| Arrowhead Lake | Rusty Crayfish | Vilas | 12/31/1998 | Details |
| Arrowhead Lake | Eurasian Water-Milfoil | Vilas | 07/01/2005 | Details |
| Averill Lake (Mud) | Rusty Crayfish | Vilas | 01/01/0001 | Details |
| Baker Lake | Chinese Mystery Snail | Vilas | 06/01/2010 | Details |
| Ballard Lake | Banded Mystery Snail | Vilas | 06/17/2010 | Details |
| Benson Lake | Rusty Crayfish | Vilas | 08/22/2018 | Details |
| Big Arbor Vitae | Curly-Leaf Pondweed | Vilas | 07/08/2008 | Details |
| Big Arbor Vitae | Banded Mystery Snail | Vilas | 12/31/2005 | Details |
| Big Arbor Vitae | Rusty Crayfish | Vilas | 12/31/1982 | Details |
| Big Arbor Vitae Lake | Chinese Mystery Snail | Vilas | 12/31/2005 | Details |
| Big Arbor Vitae Lake | Purple Loosestrife | Vilas | 06/26/2020 | Details |
| Big Bass Lake | Chinese Mystery Snail | Vilas | 09/05/2006 | Details |
| Big Crooked Lake | Rusty Crayfish | Vilas | 12/31/1999 | Details |
| Big Lake | Banded Mystery Snail | Vilas | 09/01/2011 | Details |
| Big Lake | Rusty Crayfish | Vilas | 12/31/1972 | Details |
| Big Lake | Banded Mystery Snail | Vilas | 05/01/2010 | Details |
| Big Lake | Purple Loosestrife | Vilas | 08/06/2014 | Details |
| Big Lake | Chinese Mystery Snail | Vilas | 12/31/2005 | Details |
| Big Lake | Chinese Mystery Snail | Vilas | 12/31/2005 | Details |
| Big Lake | Eurasian Water-Milfoil | Vilas | 10/03/2007 | Details |
| Big Lake | Rusty Crayfish | Vilas | 12/31/1961 | Details |
| Big Lake | Yellow Iris | Vilas | 06/23/2017 | Details |
| Big Muskellunge Lake | Purple Loosestrife | Vilas | 12/03/2012 | Details |
| Big Muskellunge Lake | Banded Mystery Snail | Vilas | 07/07/2025 | Details |
| Big Muskellunge Lake | Rusty Crayfish | Vilas | 12/31/2001 | Details |
| Big Muskellunge Lake Road - Access | Phragmites (non-native) | Vilas | 09/07/2021 | Details |
| Big Portage Lake | Rusty Crayfish | Vilas | 12/31/2001 | Details |
| Big Portage Lake | Chinese Mystery Snail | Vilas | 09/28/2023 | Details |
| Big Sand Lake | Chinese Mystery Snail | Vilas | 12/31/2006 | Details |
| Big Sand Lake | Eurasian Water-Milfoil | Vilas | 06/07/1990 | Details |
| Big Sand Lake | Purple Loosestrife | Vilas | 08/15/2012 | Details |
| Big Sand Lake | Curly-Leaf Pondweed | Vilas | 08/03/2006 | Details |
| Big St. Germain | Banded Mystery Snail | Vilas | 12/31/2005 | Details |
| Big St. Germain | Chinese Mystery Snail | Vilas | 12/31/2005 | Details |
| Big St. Germain Lake | Rusty Crayfish | Vilas | 12/31/2002 | Details |
| Birch Lake | Rusty Crayfish | Vilas | 12/31/1975 | Details |
| Birch Lake (Vilas Co) | Chinese Mystery Snail | Vilas | 07/09/2013 | Details |
| Black Oak Lake | Rusty Crayfish | Vilas | 12/31/1990 | Details |
| Black Oak Lake | Chinese Mystery Snail | Vilas | 07/19/2022 | Details |
| Bolton Lake | Chinese Mystery Snail | Vilas | 09/01/2011 | Details |
| Boot Lake | Chinese Mystery Snail | Vilas | 12/14/2011 | Details |
| Boot Lake | Eurasian Water-Milfoil | Vilas | 10/01/2000 | Details |
| Boulder Lake | Rusty Crayfish | Vilas | 12/31/1975 | Details |
| Boulder Lake | Purple Loosestrife | Vilas | 05/01/1998 | Details |
| Boulder Lake | Chinese Mystery Snail | Vilas | 08/10/2006 | Details |
| Brandy Lake | Chinese Mystery Snail | Vilas | 06/21/2006 | Details |
| Brandy Lake | Banded Mystery Snail | Vilas | 07/29/2016 | Details |
| Brandy Lake | Eurasian Water-Milfoil | Vilas | 09/14/2014 | Details |
| Broken Bow Lake | Chinese Mystery Snail | Vilas | 08/12/2010 | Details |
| Brule Creek | Rusty Crayfish | Forest, Vilas | 12/31/2002 | Details |
| Buckskin Lake | Chinese Mystery Snail | Oneida, Vilas | 07/23/2007 | Details |
| Carpenter Lake | Chinese Mystery Snail | Vilas | 01/01/0001 | Details |
| Carrol Lake | Rusty Crayfish | Oneida, Vilas | 06/01/1982 | Details |
| Carrol Lake | Purple Loosestrife | Oneida, Vilas | 08/03/2015 | Details |
| Carrol Lake | Banded Mystery Snail | Oneida, Vilas | 12/31/2005 | Details |
| Carrol Lake | Chinese Mystery Snail | Oneida, Vilas | 12/31/2005 | Details |
| Carrol Lake | Eurasian Water-Milfoil | Oneida, Vilas | 05/30/2024 | Details |
| Catfish Lake | Chinese Mystery Snail | Vilas | 01/01/0001 | Details |
| Catfish Lake | Rusty Crayfish | Vilas | 12/31/2002 | Details |
| Catfish Lake (Eagle Chain) | Eurasian Water-Milfoil | Vilas | 01/01/1995 | Details |
| Circle Lily Lake | Rusty Crayfish | Iron, Vilas | 12/31/2006 | Details |
| Clear Lake | Banded Mystery Snail | Vilas | 12/31/2005 | Details |
| Clear Lake | Chinese Mystery Snail | Vilas | 08/04/2013 | Details |
| Clear Lake | Rusty Crayfish | Vilas | 12/31/1975 | Details |
| Clear Lake | Curly-Leaf Pondweed | Vilas | 07/14/2023 | Details |
| Clearwater Lake | Chinese Mystery Snail | Oneida, Vilas | 05/29/2019 | Details |
| Clearwater Lake | Eurasian Water-Milfoil | Oneida, Vilas | 06/22/2015 | Details |
| Content Lake | Banded Mystery Snail | Vilas | 12/31/2005 | Details |
| Content Lake | Chinese Mystery Snail | Vilas | 12/31/2005 | Details |
| Crab Lake | Rusty Crayfish | Vilas | 05/01/2009 | Details |
| Crab Lake (WBIC 2953500) | Yellow Iris | Vilas | 06/23/2019 | Details |
| Cranberry Lake | Rusty Crayfish | Oneida, Vilas | 12/31/1960 | Details |
| Cranberry Lake | Chinese Mystery Snail | Oneida, Vilas | 01/01/0001 | Details |
| Cranberry Lake (Eagle Chain) | Eurasian Water-Milfoil | Oneida, Vilas | 07/01/2001 | Details |
| Crawling Stone Lake | Rusty Crayfish | Vilas | 12/31/1986 | Details |
| Crawling Stone Lake (LDF Chain) | Rainbow Smelt | Vilas | 12/31/1975 | Details |
| Crystal Lake | Rainbow Smelt | Vilas | 12/31/1985 | Details |
| Dead Pike Lake | Rainbow Smelt | Vilas | 12/31/1996 | Details |
| Deerskin Lake | Eurasian Water-Milfoil | Vilas | 09/01/2021 | Details |
| Deerskin River NE of Ridgeline Road | Purple Loosestrife | Vilas | 07/26/2017 | Details |
| Diamond Lake | Rusty Crayfish | Vilas | 12/31/1998 | Details |
| Duck Lake | Banded Mystery Snail | Vilas | 07/24/2006 | Details |
| Duck Lake | Rusty Crayfish | Vilas | 12/31/2002 | Details |
| Duck Lake | Chinese Mystery Snail | Vilas | 07/24/2006 | Details |
| Duck Lake (Eagle Chain) | Eurasian Water-Milfoil | Vilas | 01/01/1992 | Details |
| Eagle Lake | Rusty Crayfish | Vilas | 01/01/0001 | Details |
| Eagle Lake | Banded Mystery Snail | Vilas | 12/31/2012 | Details |
| Eagle Lake (T40N R10E S22) | Chinese Mystery Snail | Vilas | 12/31/2009 | Details |
| Eagle Lake (T40N, R10E, S22) | Eurasian Water-Milfoil | Vilas | 06/01/1992 | Details |
| East Flowage Road | Phragmites (non-native) | Vilas | 10/11/2021 | Details |
| Emily Lake | Purple Loosestrife | Vilas | 08/19/2019 | Details |
| Fawn Lake | Banded Mystery Snail | Vilas | 12/31/2005 | Details |
| Fawn Lake | Curly-Leaf Pondweed | Vilas | 06/20/2017 | Details |
| Fawn Lake | Purple Loosestrife | Vilas | 08/20/2019 | Details |
| Fawn Lake (Manitowish Chain) | Eurasian Water-Milfoil | Vilas | 08/29/2024 | Details |
| Fawn Lake (Mud) | Rusty Crayfish | Vilas | 12/31/1981 | Details |
| Fence Lake | Banded Mystery Snail | Vilas | 07/06/2010 | Details |
| Fence Lake (LDF Chain) | Rainbow Smelt | Vilas | 12/31/1968 | Details |
| Fence Lake Channel (Vilas) | Purple Loosestrife | Vilas | 07/21/2010 | Details |
| Finger Lake | Chinese Mystery Snail | Vilas | 11/08/2013 | Details |
| Finley Lake | Chinese Mystery Snail | Vilas | 09/01/2011 | Details |
| Fishtrap Lake | Banded Mystery Snail | Vilas | 07/25/2006 | Details |
| Fishtrap Lake | Chinese Mystery Snail | Vilas | 08/06/2013 | Details |
| Fishtrap Lake | Rusty Crayfish | Vilas | 12/31/2006 | Details |
| Flambeau Lake | Purple Loosestrife | Vilas | 07/22/2006 | Details |
| Flambeau Lake (LDF Chain) | Rainbow Smelt | Vilas | 12/31/1968 | Details |
| Forest Lake | Banded Mystery Snail | Vilas | 12/31/2005 | Details |
| Forest Lake (Goose) | Eurasian Water-Milfoil | Vilas | 06/01/2001 | Details |
| Found Lake | Eurasian Water-Milfoil | Vilas | 06/21/2018 | Details |
| Found Lake | Purple Loosestrife | Vilas | 05/23/2010 | Details |
| Found Lake | Banded Mystery Snail | Vilas | 12/31/2005 | Details |
| George Lake | Chinese Mystery Snail | Vilas | 09/01/2011 | Details |
| Gresham Creek (downstream from Lower Gresham Lake) | Rusty Crayfish | Vilas | 01/01/0001 | Details |
| Gunlock Lake | Chinese Mystery Snail | Vilas | 09/27/2007 | Details |
| Gunlock Lake | Purple Loosestrife | Vilas | 08/03/2008 | Details |
| Gunlock Lake | Purple Loosestrife | Vilas | 08/09/2019 | Details |
| Gunlock Lake - Purple Loosestrife Site 1 | Purple Loosestrife | Vilas | 08/09/2019 | Details |
| Gunlock Lake - Purple Loosestrife Site 2 | Purple Loosestrife | Vilas | 08/09/2019 | Details |
| Gunlock lake - Purple Loosestrife Site 3 | Purple Loosestrife | Vilas | 08/09/2019 | Details |
| Gunlock lake - Purple Loosestrife Site 4 | Purple Loosestrife | Vilas | 08/09/2019 | Details |
| Gunlock/Shishebogama channel | Purple Loosestrife | Vilas | 07/01/2015 | Details |
| Harris Lake | Curly-Leaf Pondweed | Vilas | 07/24/2008 | Details |
| Haskell Creek (Vilas Co) - Bridge on STH 70 | Purple Loosestrife | Vilas | 08/12/2019 | Details |
| High Lake | Rusty Crayfish | Vilas | 12/31/2002 | Details |
| High Lake | Chinese Mystery Snail | Vilas | 07/25/2006 | Details |
| High Lake | Banded Mystery Snail | Vilas | 12/31/2005 | Details |
| High Lake | Yellow Iris | Vilas | 06/27/2016 | Details |
| High Lake | Purple Loosestrife | Vilas | 07/06/2020 | Details |
| Hunter Lake | Chinese Mystery Snail | Vilas | 07/21/2008 | Details |
| Hwy 45--.3 mi north of McKinley Blvd | Purple Loosestrife | Vilas | 07/10/2013 | Details |
| Ike Walton Lake | Spiny Waterflea | Vilas | 06/08/2015 | Details |
| Island Lake | Curly-Leaf Pondweed | Vilas | 06/06/2010 | Details |
| Island Lake | Rusty Crayfish | Vilas | 12/31/1975 | Details |
| Island Lake | Banded Mystery Snail | Vilas | 12/31/2006 | Details |
| Island Lake | Purple Loosestrife | Vilas | 08/05/2014 | Details |
| Island Lake | Yellow Iris | Vilas | 07/05/2011 | Details |
| Island Lake | Chinese Mystery Snail | Vilas | 08/28/2013 | Details |
| Johnson Lake | Chinese Mystery Snail | Oneida, Vilas | 06/22/2006 | Details |
| Johnson Lake | Eurasian Water-Milfoil | Oneida, Vilas | 06/20/2019 | Details |
| Johnson Lake | Banded Mystery Snail | Vilas | 06/22/2006 | Details |
| Johnson Lake | Banded Mystery Snail | Oneida, Vilas | 06/22/2006 | Details |
| Johnson Lake T40N R06E S3 | Curly-Leaf Pondweed | Oneida, Vilas | 12/31/1999 | Details |
| Kentuck Lake | Curly-Leaf Pondweed | Forest, Vilas | 12/31/1999 | Details |
| Kentuck Lake | Banded Mystery Snail | Forest, Vilas | 09/15/2006 | Details |
| Kentuck Lake | Eurasian Water-Milfoil | Forest, Vilas | 07/01/2011 | Details |
| Kentuck Lake | Purple Loosestrife | Forest, Vilas | 08/09/2012 | Details |
| Kentuck Lake | Rusty Crayfish | Forest, Vilas | 12/31/1982 | Details |
| Kentuck Lake | Chinese Mystery Snail | Forest, Vilas | 12/31/2004 | Details |
| Lac du Lune | Chinese Mystery Snail | Vilas | 04/20/2006 | Details |
| Lac Vieux Desert | Rusty Crayfish | Vilas | 12/31/1986 | Details |
| Lac Vieux Desert | Chinese Mystery Snail | Vilas | 12/31/2004 | Details |
| Lac Vieux Desert | Eurasian Water-Milfoil | Vilas | 07/21/2008 | Details |
| Lac Vieux Desert | Curly-Leaf Pondweed | Vilas | 06/07/2012 | Details |
| Lac Vieux Desert | Banded Mystery Snail | Vilas | 07/26/2004 | Details |
| Lake Laura | Banded Mystery Snail | Vilas | 06/30/2006 | Details |
| Lake of the Hills | Chinese Mystery Snail | Vilas | 09/05/2012 | Details |
| Laura Lake | Phragmites (non-native) | Vilas | 10/01/2018 | Details |
| Link Creek | Rusty Crayfish | Vilas | 01/01/0001 | Details |
| Little Arbor Vitae Lake | Rusty Crayfish | Vilas | 12/31/1986 | Details |
| Little Arbor Vitae Lake | Banded Mystery Snail | Vilas | 12/31/2005 | Details |
| Little Arbor Vitae Lake | Curly-Leaf Pondweed | Vilas | 06/19/2024 | Details |
| Little Arbor Vitae Lake | Chinese Mystery Snail | Vilas | 12/31/2005 | Details |
| Little Bass Lake | Chinese Mystery Snail | Vilas | 06/14/2011 | Details |
| Little Bass Lake | Banded Mystery Snail | Vilas | 08/22/2022 | Details |
| Little Crawling Stone Lake | Chinese Mystery Snail | Vilas | 08/24/2011 | Details |
| Little Crawling Stone Lake | Banded Mystery Snail | Vilas | 07/07/2010 | Details |
| Little Crawling Stone Lake | Rusty Crayfish | Vilas | 12/31/2002 | Details |
| Little Crawling Stone Lake (LDF Chain) | Rainbow Smelt | Vilas | 12/31/1982 | Details |
| Little Crooked Lake | Rusty Crayfish | Vilas | 12/31/2002 | Details |
| Little Gibson Lake | Chinese Mystery Snail | Vilas | 12/31/2005 | Details |
| Little John Lake | Rusty Crayfish | Vilas | 12/31/2002 | Details |
| Little John Lake | Banded Mystery Snail | Vilas | 12/31/2005 | Details |
| Little John Lake | Chinese Mystery Snail | Vilas | 01/01/0001 | Details |
| Little Papoose Lake | Rusty Crayfish | Vilas | 06/30/2010 | Details |
| Little Presque Isle | Purple Loosestrife | Vilas | 09/21/2021 | Details |
| Little Rice Lake | Chinese Mystery Snail | Vilas | 04/20/2006 | Details |
| Little Rice Lake | Purple Loosestrife | Vilas | 08/21/2021 | Details |
| Little Saint Germain Lake | Banded Mystery Snail | Vilas | 12/31/2005 | Details |
| Little Spider Lake | Rusty Crayfish | Vilas | 12/31/2002 | Details |
| Little Spider Lake | Yellow Iris | Vilas | 06/16/2016 | Details |
| Little Spider Lake | Chinese Mystery Snail | Vilas | 08/18/2006 | Details |
| Little Spider Lake | Eurasian Water-Milfoil | Vilas | 07/05/2017 | Details |
| Little Spider Lake | Purple Loosestrife | Vilas | 07/23/2021 | Details |
| Little St Germain | Curly-Leaf Pondweed | Vilas | 07/01/2000 | Details |
| Little St Germain Lake | Eurasian Water-Milfoil | Vilas | 05/01/2003 | Details |
| Little St. Germain Lake | Chinese Mystery Snail | Vilas | 12/31/2005 | Details |
| Little Star Lake | Banded Mystery Snail | Vilas | 08/19/2019 | Details |
| Little Star Lake | Purple Loosestrife | Vilas | 08/23/2010 | Details |
| Little Star Lake | Rusty Crayfish | Vilas | 08/08/2009 | Details |
| Little Star Lake | Rusty Crayfish | Vilas | 12/31/1981 | Details |
| Little Star Lake (1593200) | Eurasian Water-Milfoil | Vilas | 06/29/2017 | Details |
| Little Star Lake (Manitowish Chain) | Eurasian Water-Milfoil | Vilas | 06/27/2024 | Details |
| Little Tamarack Lake | Phragmites (non-native) | Vilas | 10/11/2021 | Details |
| Little Trout Lake | Rainbow Smelt | Vilas | 12/31/1990 | Details |
| Long Interlaken Lake | Banded Mystery Snail | Vilas | 08/21/2013 | Details |
| Long Interlaken Lake | Chinese Mystery Snail | Vilas | 08/21/2013 | Details |
| Long Interlaken Lake (Long) (LDF Chain) | Rainbow Smelt | Vilas | 12/31/1983 | Details |
| Long Lake | Rainbow Smelt | Vilas | 12/31/1999 | Details |
| Long Lake | Eurasian Water-Milfoil | Vilas | 09/01/2000 | Details |
| Long Lake | Hybrid Eurasian / Northern Water-Milfoil | Vilas | 09/16/2016 | Details |
| Long Lake (T41 R12E S07) | Chinese Mystery Snail | Vilas | 08/22/2007 | Details |
| Loon Lake | Chinese Mystery Snail | Vilas | 12/31/1995 | Details |
| Lost Lake | Eurasian Water-Milfoil | Vilas | 06/01/2013 | Details |
| Lost Lake | Chinese Mystery Snail | Vilas | 12/31/2005 | Details |
| Lost Lake | Banded Mystery Snail | Vilas | 12/31/2005 | Details |
| Lost Lake | Rusty Crayfish | Vilas | 12/31/1986 | Details |
| Lost Lake | Curly-Leaf Pondweed | Vilas | 06/17/2014 | Details |
| Lower Buckatabon Lake | Eurasian Water-Milfoil | Vilas | 08/21/2015 | Details |
| Lower Sugarbush Lake | Purple Loosestrife | Vilas | 08/16/2022 | Details |
| Lower Sugarbush Lake | Purple Loosestrife | Vilas | 08/16/2022 | Details |
| Lynx Lake | Banded Mystery Snail | Vilas | 10/01/2007 | Details |
| Lynx Lake | Chinese Mystery Snail | Vilas | 10/01/2007 | Details |
| Lynx Lake (Eagle Chain) | Eurasian Water-Milfoil | Vilas | 07/01/2001 | Details |
| Madeline Lake | Purple Loosestrife | Oneida, Vilas | 08/09/2010 | Details |
| Madeline Lake | Chinese Mystery Snail | Oneida, Vilas | 12/31/2005 | Details |
| Madeline Lake | Banded Mystery Snail | Oneida, Vilas | 12/31/2005 | Details |
| Madeline Lake | Eurasian Water-Milfoil | Oneida, Vilas | 08/10/2023 | Details |
| Madeline Lake (Mud) | Rusty Crayfish | Oneida, Vilas | 12/31/1983 | Details |
| Mamie Lake | Chinese Mystery Snail | Vilas | 07/15/2012 | Details |
| Mamie Lake | Curly-Leaf Pondweed | Vilas | 08/27/2009 | Details |
| Mamie Lake | Rusty Crayfish | Vilas | 12/31/1988 | Details |
| Mamie Lake | Banded Mystery Snail | Vilas | 07/15/2012 | Details |
| Manitowish Lake | Purple Loosestrife | Vilas | 08/24/2010 | Details |
| Manitowish Lake | Banded Mystery Snail | Vilas | 08/04/2015 | Details |
| Manitowish Lake | Chinese Mystery Snail | Vilas | 08/05/2014 | Details |
| Manitowish Lake | Curly-Leaf Pondweed | Vilas | 06/26/2013 | Details |
| Manitowish Lake | Rusty Crayfish | Vilas | 12/31/1977 | Details |
| Manitowish Lake (Manitowish Chain) | Eurasian Water-Milfoil | Vilas | 08/09/2023 | Details |
| Manitowish River | Banded Mystery Snail | Iron, Vilas | 08/01/2015 | Details |
| Manitowish River | Rusty Crayfish | Iron, Vilas | 12/31/1975 | Details |
| Manitowish River | Chinese Mystery Snail | Iron, Vilas | 12/31/2005 | Details |
| Manitowish River - CTH K to Island Lake | Purple Loosestrife | Vilas | 07/07/2018 | Details |
| Manitowish River (Manitowish Chain) | Eurasian Water-Milfoil | Vilas | 09/12/2024 | Details |
| Manitowish River between Rest and Stone Lakes | Chinese Mystery Snail | Vilas | 08/27/2006 | Details |
| Manitowish River E Bank - CTH H .1 mi S of Street Lake Lane | Purple Loosestrife | Vilas | 07/07/2018 | Details |
| Mann Creek | Rusty Crayfish | Vilas | 12/31/2006 | Details |
| Mann Lake | Banded Mystery Snail | Vilas | 07/01/2015 | Details |
| McCullough Lake | Rusty Crayfish | Vilas | 07/14/2003 | Details |
| Meta Lake | Chinese Mystery Snail | Oneida, Vilas | 07/22/2010 | Details |
| Middle Gresham Lake | Eurasian Water-Milfoil | Vilas | 06/19/2007 | Details |
| Minocqua Thoroughfare | Rusty Crayfish | Oneida, Vilas | 01/01/0001 | Details |
| Mishonagon Creek | Rusty Crayfish | Vilas | 12/31/2006 | Details |
| Moon Lake | Chinese Mystery Snail | Vilas | 12/31/2005 | Details |
| Moss Lake | Purple Loosestrife | Vilas | 07/05/2008 | Details |
| Moss Lake (Little Mud) (LDF Chain) | Rainbow Smelt | Vilas | 12/31/1989 | Details |
| Muskellunge Lake | Chinese Mystery Snail | Vilas | 09/29/2008 | Details |
| Muskellunge Lake | Eurasian Water-Milfoil | Vilas | 08/15/2016 | Details |
| North Turtle Lake | Yellow Iris | Vilas | 06/01/2017 | Details |
| North Twin Lake | Eurasian Water-Milfoil | Vilas | 07/01/2001 | Details |
| Northeast side of Round Lake | Phragmites (non-native) | Vilas | 10/11/2021 | Details |
| Otter Lake | Rusty Crayfish | Vilas | 12/31/2002 | Details |
| Otter Lake | Banded Mystery Snail | Vilas | 07/10/2006 | Details |
| Otter Lake | Chinese Mystery Snail | Vilas | 07/10/2006 | Details |
| Otter Lake (Eagle Chain) | Eurasian Water-Milfoil | Vilas | 01/01/1992 | Details |
| Oxbow Lake | Banded Mystery Snail | Vilas | 12/31/2005 | Details |
| Palmer Lake | Eurasian Water-Milfoil | Vilas | 09/23/2019 | Details |
| Palmer Lake | Chinese Mystery Snail | Vilas | 08/23/2011 | Details |
| Papoose Lake | Yellow Iris | Vilas | 08/12/2015 | Details |
| Papoose Lake | Rusty Crayfish | Vilas | 12/31/1975 | Details |
| Pardee Lake | Banded Mystery Snail | Iron, Vilas | 08/18/2015 | Details |
| Partridge Lake | Banded Mystery Snail | Vilas | 07/17/2006 | Details |
| Partridge Lake | Chinese Mystery Snail | Vilas | 07/17/2006 | Details |
| Pickerel Lake | Chinese Mystery Snail | Vilas | 07/29/2010 | Details |
| Pine Creek | Chinese Mystery Snail | Vilas | 08/06/2008 | Details |
| Pine Creek | Chinese Mystery Snail | Vilas | 09/29/2008 | Details |
| Pioneer Creek | Banded Mystery Snail | Vilas | 07/08/2019 | Details |
| Pioneer Creek | Chinese Mystery Snail | Vilas | 09/22/2020 | Details |
| Pioneer Lake | Chinese Mystery Snail | Vilas | 08/30/2006 | Details |
| Pioneer Lake | Rusty Crayfish | Vilas | 07/08/2019 | Details |
| PL Near Crab Lake | Purple Loosestrife | Vilas | 11/03/2020 | Details |
| Placid Twin Lake, North (LDF Chain) | Rainbow Smelt | Vilas | 12/31/1996 | Details |
| Plum lake | Spiny Waterflea | Vilas | 07/23/2019 | Details |
| Plum Lake | Rusty Crayfish | Vilas | 05/15/2010 | Details |
| Plum Lake | Rusty Crayfish | Vilas | 12/31/1986 | Details |
| Plum Lake | Chinese Mystery Snail | Vilas | 12/31/2005 | Details |
| Plum Lake | Banded Mystery Snail | Vilas | 07/11/2007 | Details |
| Pokegama Lake | Rusty Crayfish | Vilas | 12/31/1986 | Details |
| Pokegama Lake | Chinese Mystery Snail | Vilas | 06/06/2011 | Details |
| Pokegama Lake (LDF Chain) | Rainbow Smelt | Vilas | 12/31/1996 | Details |
| Presque Isle Lake | Rusty Crayfish | Vilas | 12/31/1975 | Details |
| Private shoreline Deerskin River | Purple Loosestrife | Vilas | 03/04/2020 | Details |
| Razorback Lake | Banded Mystery Snail | Vilas | 12/31/2005 | Details |
| Razorback Lake | Chinese Mystery Snail | Vilas | 12/31/2005 | Details |
| Razorback Lake Campground | Phragmites (non-native) | Vilas | 10/11/2021 | Details |
| Rest Lake | Banded Mystery Snail | Vilas | 09/11/2012 | Details |
| Rest Lake | Rusty Crayfish | Vilas | 12/31/1980 | Details |
| Rest Lake | Chinese Mystery Snail | Vilas | 08/18/2007 | Details |
| Rest Lake | Yellow Iris | Vilas | 08/06/2015 | Details |
| Rest Lake | Curly-Leaf Pondweed | Vilas | 08/06/2015 | Details |
| Rest Lake | Purple Loosestrife | Vilas | 08/25/2008 | Details |
| Rest Lake Rd near McCabe Lake -Private | Purple Loosestrife | Vilas | 05/01/2010 | Details |
| Rice Creek | Rusty Crayfish | Vilas | 01/01/0001 | Details |
| Rice Creek | Curly-Leaf Pondweed | Vilas | 07/27/2012 | Details |
| Rice Creek - County Rd K to Island Lake | Purple Loosestrife | Vilas | 07/10/2012 | Details |
| Rice Creek-near Island Lake-large island | Purple Loosestrife | Vilas | 07/01/2011 | Details |
| Rock Lake | Rusty Crayfish | Vilas | 07/11/2017 | Details |
| Rock Lake - Vilas Co | Yellow Iris | Vilas | 07/30/2017 | Details |
| Round Lake | Chinese Mystery Snail | Vilas | 12/31/2005 | Details |
| Round Lake | Rusty Crayfish | Vilas | 12/31/1998 | Details |
| Scattering Rice Lake | Chinese Mystery Snail | Vilas | 06/13/2011 | Details |
| Scattering Rice Lake | Rusty Crayfish | Vilas | 12/31/2002 | Details |
| Scattering Rice Lake | Banded Mystery Snail | Vilas | 06/13/2011 | Details |
| Scattering Rice Lake (Eagle Chain) | Eurasian Water-Milfoil | Vilas | 01/01/1992 | Details |
| Shishebogama Lake | Chinese Mystery Snail | Oneida, Vilas | 08/11/2010 | Details |
| Shishebogama Lake | Curly-Leaf Pondweed | Oneida, Vilas | 06/21/2024 | Details |
| Shishebogama Lake S of Huber Dr. - | Purple Loosestrife | Vilas | 08/05/2024 | Details |
| Silver Lake | Chinese Mystery Snail | Vilas | 06/21/2008 | Details |
| Silver Lake | Eurasian Water-Milfoil | Vilas | 07/01/2005 | Details |
| Silver Lake | Banded Mystery Snail | Vilas | 09/05/2012 | Details |
| Silver Lake (Vilas Co) | Purple Loosestrife | Vilas | 05/01/2009 | Details |
| Smoky Lake | Chinese Mystery Snail | Vilas | 08/20/2014 | Details |
| Smoky Lake | Rusty Crayfish | Vilas | 12/31/2006 | Details |
| Smoky Lake | Eurasian Water-Milfoil | Vilas | 09/23/2013 | Details |
| Smoky Lake | Rainbow Smelt | Vilas | 07/29/2008 | Details |
| Snipe Lake | Chinese Mystery Snail | Vilas | 12/31/2005 | Details |
| South Turtle Lake | Banded Mystery Snail | Vilas | 08/01/2015 | Details |
| South Turtle Lake | Purple Loosestrife | Vilas | 08/11/2015 | Details |
| South Turtle Lake | Yellow Iris | Vilas | 07/09/2015 | Details |
| South Twin Lake | Chinese Mystery Snail | Vilas | 08/26/2014 | Details |
| South Twin Lake | Banded Mystery Snail | Vilas | 08/02/2010 | Details |
| South Twin Lake | Eurasian Water-Milfoil | Vilas | 07/01/2001 | Details |
| South Twin Lake | Rusty Crayfish | Vilas | 12/31/2006 | Details |
| Sparkling Lake | Purple Loosestrife | Vilas | 08/12/2010 | Details |
| Sparkling Lake | Rusty Crayfish | Vilas | 12/31/1973 | Details |
| Sparkling Lake (Silver) | Rainbow Smelt | Vilas | 12/31/1982 | Details |
| Spider Lake | Curly-Leaf Pondweed | Vilas | 05/22/2011 | Details |
| Spider Lake | Rusty Crayfish | Vilas | 12/31/1972 | Details |
| Spider Lake | Chinese Mystery Snail | Vilas | 08/24/2010 | Details |
| Spider Lake | Banded Mystery Snail | Vilas | 07/27/2011 | Details |
| Spider Lake | Purple Loosestrife | Vilas | 08/24/2010 | Details |
| Spider Lake (Manitowish Chain) | Eurasian Water-Milfoil | Vilas | 08/20/2024 | Details |
| Spring Creek | Chinese Mystery Snail | Vilas | 04/20/2006 | Details |
| Squash Lake | Rusty Crayfish | Oneida, Vilas | 12/31/2006 | Details |
| Squaw Lake | Purple Loosestrife | Oneida, Vilas | 12/03/2012 | Details |
| Squaw Lake | Rusty Crayfish | Oneida, Vilas | 12/31/1961 | Details |
| Squaw Lake | Chinese Mystery Snail | Oneida, Vilas | 12/31/2004 | Details |
| Squirrel Lake | Purple Loosestrife | Oneida, Vilas | 07/13/2015 | Details |
| Squirrel Lake | Chinese Mystery Snail | Oneida, Vilas | 12/31/2004 | Details |
| Squirrel Lake | Yellow Iris | Oneida, Vilas | 07/16/2015 | Details |
| Squirrel Lake | Rusty Crayfish | Oneida, Vilas | 12/31/1963 | Details |
| Squirrel Lake | Banded Mystery Snail | Oneida, Vilas | 07/16/2015 | Details |
| Star Lake | Spiny Waterflea | Vilas | 08/14/2013 | Details |
| Star Lake | Rusty Crayfish | Vilas | 12/31/1986 | Details |
| Star Lake | Banded Mystery Snail | Vilas | 12/31/2006 | Details |
| Star Lake | Purple Loosestrife | Vilas | 05/01/2010 | Details |
| Star Lake | Chinese Mystery Snail | Vilas | 12/31/2005 | Details |
| Stateline Lake | Rusty Crayfish | Vilas | 07/07/2011 | Details |
| Stepping Stone Lake Number 1 | Purple Loosestrife | Vilas | 05/01/2010 | Details |
| Stone Lake | Rusty Crayfish | Vilas | 12/31/1981 | Details |
| Stone Lake | Curly-Leaf Pondweed | Vilas | 06/26/2013 | Details |
| Stone Lake | Chinese Mystery Snail | Vilas | 08/06/2015 | Details |
| Stone Lake (Manitowish Chain) | Eurasian Water-Milfoil | Vilas | 08/29/2024 | Details |
| Stormy Lake | Spiny Waterflea | Vilas | 06/26/2007 | Details |
| Stormy Lake | Chinese Mystery Snail | Vilas | 12/31/2012 | Details |
| Stormy Lake | Rusty Crayfish | Vilas | 12/31/2001 | Details |
| Sugarbush Lake, Lower | Rusty Crayfish | Vilas | 01/01/0001 | Details |
| Sugarbush Lake, Middle | Rusty Crayfish | Vilas | 01/01/0001 | Details |
| Tenderfoot Lake | Purple Loosestrife | Vilas | 01/01/2011 | Details |
| Tomahawk River | Curly-Leaf Pondweed | Lincoln, Oneida, Vilas | 12/31/2004 | Details |
| Tomahawk River | Rusty Crayfish | Lincoln, Oneida, Vilas | 06/30/2004 | Details |
| Tomahawk River | Banded Mystery Snail | Lincoln, Oneida, Vilas | 12/31/2006 | Details |
| Towanda Lake | Banded Mystery Snail | Vilas | 06/18/2013 | Details |
| Towanda Lake | Chinese Mystery Snail | Vilas | 08/18/2006 | Details |
| Trout Lake | Spiny Waterflea | Vilas | 09/30/2014 | Details |
| Trout Lake | Rusty Crayfish | Vilas | 12/31/1977 | Details |
| Trout Lake | Banded Mystery Snail | Vilas | 08/25/2011 | Details |
| Trout River | Rusty Crayfish | Vilas | 12/31/1977 | Details |
| Trout River (Manitowish Chain) | Eurasian Water-Milfoil | Vilas | 08/09/2023 | Details |
| Trout River Phragmites occurrence 3153 (GLRI Site ID 27) | Phragmites (non-native) | Vilas | 10/02/2013 | Details |
| Trout River Phragmites occurrence 3155 (GLRI Site ID 27) | Phragmites (non-native) | Vilas | 10/02/2013 | Details |
| Turner Lake | Rusty Crayfish | Price, Vilas | 12/31/2002 | Details |
| Turner Lake | Chinese Mystery Snail | Price, Vilas | 06/28/2019 | Details |
| Turtle Lake, North | Rusty Crayfish | Vilas | 12/31/1975 | Details |
| Turtle Lake, South | Rusty Crayfish | Vilas | 12/31/1975 | Details |
| Twin Lake, North | Rusty Crayfish | Vilas | 12/31/1983 | Details |
| Twin Lake, North | Chinese Mystery Snail | Vilas | 01/01/0001 | Details |
| Twin River | Eurasian Water-Milfoil | Vilas | 09/03/2019 | Details |
| Upper Buckatabon | Chinese Mystery Snail | Vilas | 09/01/2011 | Details |
| Upper Buckatabon Lake | Eurasian Water-Milfoil | Vilas | 07/28/2015 | Details |
| Upper Buckatabon Lake | Banded Mystery Snail | Vilas | 07/14/2011 | Details |
| Upper Buckatabon Lake | Rusty Crayfish | Vilas | 04/25/2023 | Details |
| Upper Gresham Lake | Chinese Mystery Snail | Vilas | 12/31/2005 | Details |
| Upper Gresham Lake | Rusty Crayfish | Vilas | 04/30/2002 | Details |
| Upper Gresham Lake | Eurasian Water-Milfoil | Vilas | 08/01/2001 | Details |
| Upper Gresham Lake | Phragmites (non-native) | Vilas | 05/22/2012 | Details |
| Upper Ninemile Lake | Banded Mystery Snail | Forest, Vilas | 07/22/2004 | Details |
| Upper Sugarbush Lake | Rusty Crayfish | Vilas | 01/01/1975 | Details |
| Van Vliet Lake | Rusty Crayfish | Vilas | 12/31/1975 | Details |
| Vance Lake | Purple Loosestrife | Vilas | 07/10/2018 | Details |
| Vance Lake | Rusty Crayfish | Vilas | 06/13/2019 | Details |
| Vance Lake | Curly-Leaf Pondweed | Vilas | 10/05/2023 | Details |
| Vandercook Lake | Chinese Mystery Snail | Vilas | 05/26/2024 | Details |
| Verna Lake | Chinese Mystery Snail | Vilas | 06/23/2010 | Details |
| Voyageur Lake (Eagle Chain) | Eurasian Water-Milfoil | Vilas | 01/01/1994 | Details |
| Voyageur Lake (Smile-A-While) | Rusty Crayfish | Vilas | 12/31/2002 | Details |
| Watersmeet Lake | Rusty Crayfish | Vilas | 12/31/2002 | Details |
| Watersmeet Lake (Eagle Chain) | Eurasian Water-Milfoil | Vilas | 01/01/1992 | Details |
| Watersmeet Lake Sandbar | Purple Loosestrife | Vilas | 07/28/2021 | Details |
| West Bay Lake | Eurasian Water-Milfoil | Vilas | 07/25/2017 | Details |
| West Bay Lake | Chinese Mystery Snail | Vilas | 08/01/2007 | Details |
| West Bay Lake | Rusty Crayfish | Vilas | 12/31/2006 | Details |
| West Plum Lake | Chinese Mystery Snail | Vilas | 12/31/2005 | Details |
| White Sand Lake | Purple Loosestrife | Vilas | 06/14/2008 | Details |
| White Sand Lake | Rusty Crayfish | Vilas | 06/01/2010 | Details |
| White Sand Lake | Rusty Crayfish | Vilas | 07/28/2014 | Details |
| White Sand Lake | Banded Mystery Snail | Vilas | 07/28/2014 | Details |
| White Sand Lake | Eurasian Water-Milfoil | Vilas | 08/16/2023 | Details |
| Whitney Lake | Chinese Mystery Snail | Vilas | 06/13/2011 | Details |
| Wild Rice Lake | Chinese Mystery Snail | Vilas | 06/22/2010 | Details |
| Wild Rice Lake | Rusty Crayfish | Vilas | 12/31/1975 | Details |
| Wild Rice Lake | Banded Mystery Snail | Vilas | 06/23/2006 | Details |
| Wild Rice Lake | Purple Loosestrife | Vilas | 05/20/2010 | Details |
| Wildcat Lake | Banded Mystery Snail | Vilas | 12/31/2005 | Details |
| Wildcat Lake | Chinese Mystery Snail | Vilas | 12/31/2005 | Details |
| Wisconsin River | Curly-Leaf Pondweed | Vilas | 05/01/2021 | Details |
| Wisconsin River - along State Highway 70, north of Dam Lake | Chinese Mystery Snail | Oneida, Vilas | 12/31/2005 | Details |
| Wisconsin River - Vilas County | Rusty Crayfish | Vilas | 01/01/0001 | Details |
| Wisconsin River - Vilas County | Eurasian Water-Milfoil | Vilas | 06/01/2022 | Details |
| Wisconsin River (below Watersmeet Lake) | Eurasian Water-Milfoil | Oneida, Vilas | 09/13/2005 | Details |
| Yellow Birch Lake | Purple Loosestrife | Vilas | 08/23/2005 | Details |
| Yellow Birch Lake | Chinese Mystery Snail | Vilas | 08/13/2015 | Details |
| Yellow Birch Lake | Banded Mystery Snail | Vilas | 08/13/2015 | Details |
| Yellow Birch Lake | Rusty Crayfish | Vilas | 12/31/2002 | Details |
| Yellow Birch Lake (Eagle Chain) | Eurasian Water-Milfoil | Vilas | 01/01/1992 | Details |