Fish and Aquatic Life
Island Lake, in the Manitowish River Watershed, is a 865.23 acre lake that falls in Vilas County. This lake is managed for fishing and swimming and is currently not considered impaired.
Author Aquatic Biologist
Source: 1963, Surface Water Resources of Vilas County
Island Lake, T-42-N, R-6-E, Section 18,
Area = 757 Surface Acres, Maximum Depth = 33 feet
Island Lake is a moderately fertile drainage lake. It has
slightly alkaline, clear water of moderate transparency. The
bottom materials consist mostly of sand, with rock and some gravel
and muck. Both the inlet and outlet streams are considered to be
navigable. The principal fish species present are the muskellunge,
northern pike, walleye, large and smallmouth bass and pan fish.
Presently, there is access either of a difficult or unimproved
nature or by navigable water. There are six resorts with one boat
rental facility and 43 cottages located on or about the shore line.
However, because of the lake's large size and fertility, it
undoubtedly sees some use by both diving ducks and puddle ducks on
the spring and fall migration. There are four state-owned islands
located on this lake and these provide picnic and canoe camp sites.
Author Surface Water Inventory Of Wisconsin
Wisconsin has over 84,000 miles of streams, 15,000 lakes and milllions of acres of wetlands. Assessing the condition of this vast amount of water is challenging. The state's water monitoring program uses a media-based, cross-program approach to analyze water condition. An updated monitoring strategy (2015-2020) is now available. Compliance with Clean Water Act fishable, swimmable standards are located in the Executive Summary of Water Condition in 2018. See also the 'monitoring and projects' tab.
This project will complete a Smart Growth compliant plan for the Township of Manitowish Waters. Specifically, this grant will cover portions of the agricultural/natural resources/cultural, internal governmental, land use, and implementation strategy elements.
Wisconsin's Water Quality Standards provide qualitative and quantitative goals for waters that are protective of Fishable, Swimmable conditions [Learn more]. Waters that do not meet water quality standards are considered impaired and restoration actions are planned and carried out until the water is once again fishable and swimmable
Management goals can include creation or implementation of a Total Maximum Daily Load analysis, a Nine Key Element Plan, or other restoration work, education and outreach and more. If specific recommendations exist for this water, they will be displayed below online.
Monitoring the condition of a river, stream, or lake includes gathering physical, chemical, biological, and habitat data. Comprehensive studies often gather all these parameters in great detail, while lighter assessment events will involve sampling physical, chemical and biological data such as macroinvertebrates. Aquatic macroinvertebrates and fish communities integrate watershed or catchment condition, providing great insight into overall ecosystem health. Chemical and habitat parameters tell researchers more about human induced problems including contaminated runoff, point source dischargers, or habitat issues that foster or limit the potential of aquatic communities to thrive in a given area. Wisconsin's Water Monitoring Strategy was recenty updated.
Grants and Management Projects
|WBIC||Official Waterbody Name||Station ID||Station Name||Earliest Fieldwork Date||Latest Fieldwork Date||View Station||View Data|
|2324400||Manitowish River||10020753||Manitowish River||Map||Data|
|2334500||Rice Creek||10035915||Rice Creek - Area of Open Water||Map||Data|
|2334400||Island Lake||643200||Island Lake - Deep Hole||6/7/1993||9/13/2021||Map||Data|
|5505819||Unnamed||10035915||Rice Creek - Area of Open Water||Map||Data|
|2334400||Island Lake||10006425||Island Lake||8/29/2000||9/5/2021||Map||Data|
Island Lake is located in the Manitowish River watershed which is 268.60 mi². Land use in the watershed is primarily forest (66.90%), wetland (19.10%) and a mix of open (13.30%) and other uses (0.70%). This watershed has 212.08 stream miles, 22,943.16 lake acres and 33,727.48 wetland acres.
Nonpoint Source Characteristics
This watershed is ranked Low for runoff impacts on streams, Low for runoff impacts on lakes and Low for runoff impacts on groundwater and therefore has an overall rank of Low. This value can be used in ranking the watershed or individual waterbodies for grant funding under state and county programs.However, all waters are affected by diffuse pollutant sources regardless of initial water quality. Applications for specific runoff projects under state or county grant programs may be pursued. For more information, go to surface water program grants.