Fish and Aquatic Life
Long Lake is located in eastern Manitowoc County approximately three miles southeast of the City of Brillion. The lake has a surface area of 120 acres and a maximum depth of 38 feet. It is a long, narrow lake with a shoreline of about 2.2 miles. The lake is moderately developed with residences and has public access on the northeast corner. A dam on the south end of the lake controls the water level. Studies have shown the lake to be highly eutrophic with a relatively small watershed.
Author Aquatic Biologist
Source: 1968, Surface Water Resources of Manitowoc County Long Lake (Big), T19N, R21E, Sections 6, 7 Surface acres - 117, S.D.F. = 2.18, Maximum depth = 37 feet.
A small, landlocked seepage lake on outwash deposits. This is a hard water lake surrounded entirely by agricultural land. The bottom is muck with some gravelly areas. Northern pike, walleye, panfish and bullheads are common. Major use problems include algae, carp, and stunted panfish. There are 24 dwellings on the shoreline. Public access with parking is provided by a county road. A good boat landing is present and the lake has one boat livery which aids fishing access. Mallards and blue-wing teal have been noted to nest here. Hunting is permitted and a moderate number of both diving and puddle ducks visit the area in the spring and fall.
Author Surface Water Inventory Of Wisconsin
Long Lake (Big Long) (WBIC 77500) was placed on the impaired waters list for total phosphorus in 2010. The 2018 assessments showed continued impairment by phosphorus; new total phosphorus and chlorophyll-a sample data exceeded the 2018 WisCALM listing thresholds for the Recreation use and Fish and Aquatic Life use. Based on the most updated information, no change in existing impaired waters listing was needed.
Author Ashley Beranek
Long Lake (Big Long) (77500) was placed on the impaired waters list for total phosphorus in 2010. The 2016 assessments showed continued impairment by phosphorus; total phosphorus sample data overwhelmingly exceed 2016 WisCALM listing thresholds for the Recreation use, exceeded Fish and Aquatic Life use, and chlorophyll data exceeded REC and FAL thresholds. Based on the most updated information, no change in existing impaired waters listing is needed.
Author Aaron Larson
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.
Nutrient Budget Development
Calumet County proposes to quantify and compartmentalize nutrient budgets for the four lakes situated along the Calumet/Manitowoc County boarder which includes Round, Becker, Boot, and Long Lakes through in-lake, tributary, groundwater and watershed monitoring and modeling.
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|
|77500||Long Lake||363310||Long Lake - Deep Hole||11/6/1980||8/23/2021||Map||Data|
|77500||Long Lake||10019452||Long Lake -- Access Nr Long Lake Rd ||5/1/2004||7/4/2021||Map||Data|
|77500||Long Lake||10003557||Long Lake (Manitowoc County)||7/27/1999||7/20/2020||Map||Data|
|77500||Long Lake||10044776||Long Lake - Groundwater Site 26||6/17/2015||6/17/2015||Map||Data|
|77500||Long Lake||363017||Long Lake - Deep Hole||7/24/2007||10/17/2007||Map||Data|
|77500||Long Lake||363230||Long Lake - Deepest Point||Map||Data|
|77500||Long Lake||10044772||Long Lake - Groundwater Site 14||6/17/2015||6/17/2015||Map||Data|
Long Lake is located in the North Branch Manitowoc River watershed which is 76.97 mi². Land use in the watershed is primarily agricultural (61.80%), grassland (16%) and a mix of wetland (14.60%) and other uses (7.50%). This watershed has 129.77 stream miles, 292.80 lake acres and 7,389.45 wetland acres.
Nonpoint Source Characteristics
This watershed is ranked Not Ranked for runoff impacts on streams, High 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.