Fish and Aquatic Life
Mason Lake, in the Neenah Creek Watershed, is a 881.59 acre lake that falls in Adams and Marquette Counties. This lake is managed for fishing and swimming and is currently considered impaired.
Author Aquatic Biologist
Source: 1966, Surface Water Resources of Adams County Mason Lake, T14n, R7E, Section 25
This hard water drainage lake is located on the south branch of Neenah Creek. The dam has a head of 11 feet and until recently was privately owned and used for power. It has been purchased by the Town of Douglas (Marquette County). Light brown, often turbid water is alkaline and has a low transparency. Walleyes, northern pike, largemouth bass, crappies, yellow perch, bluegills, pumpkinseed, yellow bass, channel catfish, blackbullheads, and carp comprise the fishery. There is an improved boat launching site in Briggsville, but there is no designated parking area for cars and trailers. Commercial facilities are available and, in addition, there are 99 private dwellings. Turbidity and carp are the major use problems. Muskrat are present. Although some dabbler ducks nest at the lake, the majority are present during their migration periods.
Surface Acres = 857, S.D.F.= 1.92, Maximum Depth = 10 feet
Author Surface Water Inventory Of Wisconsin
Mason Lake was originally listed in 2002 due to eutrophicaton and elevated pH impairments of the fish and aquatic life use caused by total phosphorus. This water was assessed during the 2012 listing cycle, and total phosphorus and chlorophyll sample data exceed 2012 WisCALM listing thresholds for the recreation use. Fish and aquatic life thresholds for total phosphorus and chlorophyll were not exceeded.
Author Aquatic Biologist
The 2018 assessments of Mason Lake (WBIC 175700) showed continued impairment by phosphorus; total phosphorus and chlorophyll 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
Mason Lake (175700) was placed on the impaired waters list for total phosphorus in 2002. The 2016 assessments showed continued impairment by phosphorus; total phosphorus sample data overwhelmingly exceed 2016 WisCALM listing thresholds for the Recreation use, and chlorophyll data exceed REC thresholds. Total phosphorus and chlorophyll data do not exceed Fish and Aquatic Life 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.
Adams County proposes to wrap up its county-wide lake classification effort. Major project elements to include: 1) completion of water sampling, 2) development of lakes classification report and individual lake summaries, 3) development of a powerpoint presentation, 4) four public meetings, 5) expansion of shoreline restoration packet.
Adams County continue its lake classification efforts through collecting and assessing chemical and biological data on all lakes within the county that afford public access. Major project componants to include: 1) collection and assessment of chemical and biological data, 2) development of a "library" of information for public use, 3) development of management recommendations, 4) I&E for riparians and lake users.
Adams County proposes to initiate a Lakes Classification effort to assist in comprehensive plan development for communities surrounding its lakes with public access. Phase 1 elements, to be funded with this grant, include: 1) delination of surface watersheds and flow patterns, 2) delineation of ground watersheds, 3) identification and mapping of land uses, 4) inventory and mapping of shoreline erosion and development problems, 5) identification and mapping of sensitive/critical areas and natural heritage habitats, 6) verification of wetland delineations, 7) delineations of lake watersheds, 8) development of lake maps
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|
|175700||Mason Lake||10017920||Mason Lake -- Access Nr The End Of 1st Dr And Grouse Ct||8/26/2007||3/23/2021||Map||Data|
|175700||Mason Lake||013131||Mason Lake - Deep Hole||Map||Data|
|175700||Mason Lake||10019684||Mason Lake -- Lake Mason Access||8/29/2003||6/13/2014||Map||Data|
|175700||Mason Lake||013029||Mason Lake - Deep Hole||3/5/1973||5/4/2021||Map||Data|
|175700||Mason Lake||10003951||Mason Lake||6/1/1992||7/13/2020||Map||Data|
|175700||Mason Lake||10017921||Mason Lake -- Access Off Golden Dr||9/23/2011||8/11/2019||Map||Data|
|175700||Mason Lake||10045530||Phragmites Occurrence - Mason Lake||Map||Data|
|175700||Mason Lake||10048818||Lake Mason Response Monitoring Bacteria||7/25/2017||7/25/2017||Map||Data|
|175700||Mason Lake||013132||Mason Lake - Outlet At C.T.H. A||9/26/1972||3/23/2021||Map||Data|
Mason Lake is located in the Neenah Creek watershed which is 173.35 mi². Land use in the watershed is primarily forest (38.20%), agricultural (30.80%) and a mix of wetland (14.80%) and other uses (16.20%). This watershed has 198.75 stream miles, 2,104.14 lake acres and 14,499.98 wetland acres.
Nonpoint Source Characteristics
This watershed is ranked Not Available 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.