Fish and Aquatic Life
Pearl Lake, in the Pine and Willow Rivers Watershed, is a 101.18 acre lake that falls in Waushara County. This lake is managed for fishing and swimming and is currently not considered impaired.
Author Aquatic Biologist
Source: 1970, Surface Water Resources of Waushara County Pearl Lake T-19-N, R-12-E, Section 30
A moderate sized, hard water seepage lake located three miles north of Redgranite. Littoral bottom materials consist of sand, gravel and muck, with small amounts of marl. The lake is characterized by an elongated, irregular basin, with deep holes located at each end. A ridge surrounds all but the south end of the lake. A thermocline develops at 24 feet. Fish species present include northern pike, largemouth bass, bluegill, black crappie and rainbow trout. Limited numbers of migrating puddle ducks visit the lake each spring and fall. Other uses are swimming, fishing and boating. Property owners complain about night fishing for rainbow trout because of the noise and excessive littering. There are 170 cottages or dwellings present, one resort and one boat livery. Access consists of one town road without nearby parking.
Surface Acres = 92; S.D.F. = 1.64; Maximum Depth = 50 feet
Author Surface Water Inventory Of Wisconsin
Pearl Lake (195400) 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 was also assessed for chlorides and sample data were clearly below 2016 WisCALM chronic and acute listing criteria for the 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|
|195400||Pearl Lake||10019334||Pearl Lake -- Access||6/17/1975||9/5/2022||Map||Data|
|195400||Pearl Lake||703014||Pearl Lake - West Basin||3/2/1976||8/29/2022||Map||Data|
|195400||Pearl Lake||10007438||Pearl Lake||8/25/1977||8/1/2022||Map||Data|
|195400||Pearl Lake||703035||Pearl Lake - East Lobe Deep Spot||6/19/1986||1/1/2015||Map||Data|
Pearl Lake is located in the Pine and Willow Rivers watershed which is 302.08 mi². Land use in the watershed is primarily forest (34.40%), agricultural (27.80%) and a mix of wetland (19.20%) and other uses (18.70%). This watershed has 377.48 stream miles, 11,273.01 lake acres and 33,136.61 wetland acres.
Nonpoint Source Characteristics
This watershed is ranked High for runoff impacts on streams, Not Ranked for runoff impacts on lakes and High for runoff impacts on groundwater and therefore has an overall rank of High. 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.