Fish and Aquatic Life
Twin Lake, South, in the Lower Namekagon River Watershed, is a 106.11 acre lake that falls in Washburn County. This lake is managed for fishing and swimming and is currently not considered impaired.
Author Aquatic Biologist
Source: 1978, Surface Water Resources of Washburn County South Twin Lake, T41N, R13W, Section 2, Surface Acres-115.0, Maximum Depth-29 feet, M.P.A.-28 ppm, Secchi Disk-19 feet A soft water, seepage lake connected to nearby Middle and North Twin Lakes by a channel that is usually navigable at normal water levels. These lakes are landlocked. The fishery here is composed of walleyes, northern pike, largemouth bass, a few smallmouth bass, bluegills, black crappies, pumpkinseeds, bullheads, white suckers, common and golden shiners. The panfish have tended to be slow growing here. The shoreline around this clear water lake is mostly sand, with gravel and boulders along 20 percent of it. The lakeshore cover is scrub oak and jack pine on the uplands and spruce bog off the southeast side where two percent of the shore is wetlands. A small cattail marsh is found off the bay on the southwest shore. Much of the east and west lakeshore slopes steeply to the lake. Aquatic vegetation growth is sparse. A few muskrats are found here and nesting mallards also use the lake. Ten acres of wetlands do not offer a great deal of space for waterfowl and wildlife. There is a resort between Middle and South Twin Lakes and a resort, campground and boat rental place on the south shore of South Twin Lake. A Town of Chicog public access is located on the southwest bay and is the extent of public frontage on the lake.
Author Surface Water Inventory Of Wisconsin
South Twin Lake (2494500) was assessed during the 2016 listing cycle; total phosphorus and chlorophyll sample data were clearly below 2016 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use. This water is meeting these designated uses and is not considered impaired.
Author Ashley Beranek
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.
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|
|2494500||South Twin Lake,Twin Lakes ||10018263||South Twin Lake -- Access||5/30/2007||6/17/2013||Map||Data|
|2494500||South Twin Lake,Twin Lakes ||10006959||South Twin Lake||9/5/2000||9/12/2017||Map||Data|
|2494500||South Twin Lake,Twin Lakes ||663104||South Twin Lake - Deep Hole||7/27/1994||8/29/2021||Map||Data|
South Twin Lake,Twin Lakes is located in the Lower Namekagon River watershed which is 239.34 mi². Land use in the watershed is primarily forest (73.10%), wetland (15.20%) and a mix of open (7.40%) and other uses (4.40%). This watershed has 172.53 stream miles, 12,590.30 lake acres and 21,781.64 wetland acres.
Nonpoint Source Characteristics
This watershed is ranked Not Ranked for runoff impacts on streams, Not Ranked 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.