Fish and Aquatic Life
Thomas Lake is a clear, hard water seepage lake located three miles west of Amherst Junction. The littoral zone has a sand bottom, and is covered with dense aquatic vegetation to a depth of about fifteen feet. In midsummer a thermocline develops at about sixteen feet. In 1957, the lake was chemically treated to remove a slow growing panfish population. Bluegills, largemouth bass, and rainbow trout were restocked. Unknown individuals also stocked pumpkinseed, green sunfish, black and yellow bullheads, and rock bass. As a result, by 1960 the panfish were again overpopulated and quite small. The lake was retreated in 1961 and stocked with rainbow trout, largemouth and smallmouth bass, and bluegills. Once again individuals added common sunfish, suckers, and bullheads. Now, northern pike are also present. A public access is present on the south side, including an unimproved boat launching area. A private boat livery is adjacent to the public access. Three dwellings are the only other developments. Swimming and fishing are the major uses of this lake. Cattle pasturing next to the water is destroying bank cover and beginning to cause light erosion.
Source: 1972, Surface Water Resources of Portage County Thamar (Thomas) Lake, T23N, R9E, Section 15, Surface Acres-33.9, S.D.F.-1.08, Maximum Depth -31 feet.
Author Aquatic Biologist
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|
|200300||Thomas Lake||10017597||Lake Thomas -- Access||7/26/2009||12/9/2010||Map||Data|
|200300||Thomas Lake||10005109||Thomas Lake||7/27/1999||9/11/2016||Map||Data|
|200300||Thomas Lake||10045868||Phragmites occurrence 2781 - Thomas Lake||Map||Data|
|200300||Thomas Lake||10040058||Thomas Lake - Center||7/1/2013||7/10/2013||Map||Data|
|200300||Thomas Lake||10044268||Thomas Lake - Monitoring Well||9/17/2015||6/19/2018||Map||Data|
Thomas Lake is located in the Waupaca River watershed which is 290.77 mi². Land use in the watershed is primarily forest (43.70%), agricultural (30.40%) and a mix of grassland (14%) and other uses (11.80%). This watershed has 231.34 stream miles, 2,456.10 lake acres and 14,124.68 wetland acres.
Nonpoint Source Characteristics
This watershed is ranked Medium 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.