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

Tomahawk Lake -- Access at Coffen Ln Off Hwy 47

Location:

Boats Inspected (Boats Inspected:2004=0,2005=316,2006=199,2007=224,2008=812,2009=931,2010=2821,2011=175,2012=1988,2013=1732,2014=1775,2015=1783,2016=1971,2017=1734,2018=1900,2019=1883,2020=2021,2021=2196,2022=1749,2023=1983,2024=1914|)

People Contacted (People Contacted:2004=0,2005=734,2006=527,2007=432,2008=2205,2009=2764,2010=7650,2011=510,2012=5937,2013=5328,2014=6232,2015=5381,2016=6205,2017=5541,2018=6024,2019=5746,2020=6584,2021=7166,2022=5439,2023=6624,2024=5881|)

Hours Spent (Hours Spent:2004=0,2005=43,2006=36,2007=37.75,2008=255.5,2009=248.5,2010=407.75,2011=33.5,2012=322.75,2013=333.5,2014=399,2015=304,2016=322,2017=319,2018=332,2019=340.5,2020=356,2021=344,2022=304,2023=376,2024=361|)

Hours Spent - Paid vs. Volunteer (Paid Hours:2008=72.5,2009=0.5,2010=366.75,2011=5.5,2012=298.75,2013=269.5,2014=349,2015=304,2016=322,2017=319,2018=332,2019=340.5,2020=356,2021=344,2022=304,2023=376,2024=361|Volunteer Hours:2008=183,2009=248,2010=41,2011=28,2012=24,2013=64,2014=50,2015=0,2016=0,2017=0,2018=0,2019=0,2020=0,2021=0,2022=0,2023=0,2024=0|)

Note: for the first few years, the Clean Boats form only asked for total hours. Later, most boat inspectors used the newer form which asked for Paid vs. Volunteer.

Tomahawk Lake has the following aquatic invasive species:
Banded Mystery Snail, Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Purple Loosestrife, Rusty Crayfish, Yellow Iris