Thorne Lake, Totagatic River Watershed (SC20)
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Thorne Lake, Totagatic River Watershed (SC20)
Thorne Lake (2501300)
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33.96 Acres
Natural Community
Natural communities (stream and lake natural communities) represent model results that use predicted flow and temperature based on landscape features and related assumptions. Ranges of flow and temperature associated with specific aquatic life communities (fish, macroinvertebrates) help biologists identify appropriate resource management goals. Wisconsin Natural Communities.
Shallow Seepage
Year Last Monitored
This is the most recent date of monitoring data stored in SWIMS. Additional surveys for fish and habitat may be available subsequent to this date.
2012
Unknown
 
Douglas
Trout Water 
Trout Waters are represented by Class I, Class II or Class III waters. These classes have specific ecological characteristics and management actions associated with them. For more information regarding Trout Classifications, see the Fisheries Trout Class Webpages.
No
Outstanding or Exceptional 
Wisconsin has designated many of the state's highest quality waters as Outstanding Resource Waters (ORWs) or Exceptional Resource Waters (ERWs). Waters designated as ORW or ERW are surface waters which provide outstanding recreational opportunities, support valuable fisheries and wildlife habitat, have good water quality, and are not significantly impacted by human activities. ORW and ERW status identifies waters that the State of Wisconsin has determined warrant additional protection from the effects of pollution. These designations are intended to meet federal Clean Water Act obligations requiring Wisconsin to adopt an 'antidegradation' policy that is designed to prevent any lowering of water quality - especially in those waters having significant ecological or cultural value.
No
Impaired Water 
A water is polluted or 'impaired' if it does not support full use by humans, wildlife, fish and other aquatic life and it is shown that one or more of the pollutant criteria are not met.
No

Fish and Aquatic Life

Current Use
The use the water currently supports. This is not a designation or classification; it is based on the current condition of the water. Information in this column is not designed for, and should not be used for, regulatory purposes.
Shallow Seepage
Shallow seepage lake describes the depth and location of the lake in a watershed. These variables affect the lakes response to watershed variables.
Attainable Use
The use that the investigator believes the water could achieve through managing "controllable" sources. Beaver dams, hydroelectric dams, low gradient streams, and naturally occurring low flows are generally not considered controllable. The attainable use may be the same as the current use or it may be higher.
Default FAL
Fish and Aquatic Life - Default Waters do not have a specific use designation subcategory but are considered fishable, swimmable waters.
Designated Use
This is the water classification legally recognized by NR102 and NR104, Wis. Adm. Code. The classification determines water quality criteria and effluent limits. Waters obtain designated uses through classification procedures.
Default FAL
Fish and Aquatic Life - Default Waters do not have a specific use designation subcategory but are considered fishable, swimmable waters.

Overview

Source: 1973, Surface Water Resources of Douglas County

Thorne Lake, T43N, R10W. Section 7. 8.
Surface Acres-29.4, Maximum Depth-9 feet, M.P.A.-8 ppm, Secchi
Disk-Bottom
A soft water seepage lake, it is landlocked and subject to
occasional partial winterkills of the fishery. The present fish
population consists of northern pike, largemouth bass, perch. blue-
gills, and a few black crappies. pumpkinseeds. and bullheads.
Water level fluctuations of at least two feet of lake depth occur
in some years. and are partly responsible for the winter freeze-
out conditions. The water transparency is clear. and the lake's
littoral bottom along shore is sandy, with some gravel and muck in
the south bay. The south shore is bordered by sedge meadow and a
leatherleaf bog of 13 acres. These wetlands provide nesting
habitat for mallards, blue-winged teal, and wood ducks, although
the lake is not especially noted for waterfowl hunting. The
remaining shore is upland with Jack pine and mixed hards. Private
development amounts to two cottages. The only public frontage is a
60-foot wide undeveloped platted access on the lake's north end.
There is presently no developed access road.

Date  

Author   Aquatic Biologist

Thorne Lake, Totagatic River Watershed (SC20) Fish and Aquatic LifeThorne Lake, Totagatic River Watershed (SC20) RecreationThorne Lake, Totagatic River Watershed (SC20) Fish Consumption

Condition

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.

Reports

Lake Bathymetry Map for Thorn Lake

Management Goals

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

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

Project Name (Click for Details)Year Started

Monitoring Projects

WBICOfficial Waterbody NameStation IDStation NameEarliest Fieldwork DateLatest Fieldwork DateView StationView Data
2501300Thorn Lake10002198Thorn Lake9/5/20009/15/2012MapData
2501300Thorn Lake164013Thorn Lake - Thorn Lake7/19/19797/19/1979MapData

Watershed Characteristics

Thorn Lake is located in the Totagatic River watershed which is 329.93 mi². Land use in the watershed is primarily forest (70.70%), wetland (22.10%) and a mix of open (5%) and other uses (2.00%). This watershed has 275.08 stream miles, 6,681.38 lake acres and 42,970.25 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.

Natural Community

Thorne Lake is considered a Shallow Seepage under the state's Natural Community Determinations.

Natural communities (stream and lake natural communities) represent model results and DNR staff valiation processes that confirm or update predicted conditions based on flow and temperature modeling from historic and current landscape features and related variables. Predicated flow and temperatures for waters are associated predicated fish assemblages (communities). Biologists evaluate the model results against current survey data to determine if the modeled results are corect and whether biological indicators show water quaity degradation. This analysis is a core component of the state's resource management framework. Wisconsin's Riverine Natural Communities.

Shallow seepage lake describes the depth and location of the lake in a watershed. These variables affect the lakes response to watershed variables.