Grand Portage Lake, Flambeau Flowage Watershed (UC14)
Grand Portage Lake, Flambeau Flowage Watershed (UC14)
Grand Portage Lake Beach (2314100)
0.42 Miles
0 - 0
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's Riverine Natural Communities.
Deep Lowland
Year Last Monitored
This date represents the most recent date of water quality monitoring stored in the SWIMS system. Additional field surveys for fish and habitat may be available subsequent to this date.
2015
Unknown
 
Iron
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.
FAL
Fish and Aquatic Life - waters that do not have a specific use designation subcategory assigned but which are considered fishable, swimmable waters.
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.
FAL
Fish and Aquatic Life - waters that do not have a specific use designation subcategory assigned but which 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

Grand Portage Lake is a medium hard water drainage lake having alkaline, clear water of moderate transparency. There are two inlet streams, one from Little Martha Lake, which affords little or no boating use, and one from Martha Lake, which is navigable to small craft. The outlet stream to Mercer Lake is navigable to small craft, however, there is an obstruction at the second downstream bridge due to a municipal water and sewer pipe that obstructs floating craft. Grand Portage Lake is part of the Little Turtle River drainage. Sand is the predominant littoral material (90 percent), with muck (5 percent), gravel (3 percent) and same rubble and boulders. The shoreline is predominantly upland (93 percent), 40 percent of which is cleared, with the remaining shoreline being wetland of the bog type. The common game fish are walleye and largemouth bass but some muskellunge and northern pike are present. Panfish include perch, bluegill, black crappie, rock bass and pumpkinseed. Black bullhead, white sucker and redhorse sucker complete the list. Waterfowl use by puddle ducks, diving ducks and on occasion Canada geese does occur but is somewhat limited. Mallard and black duck utilize this lake as a nesting site. Floating, emergent and submergent vegetation is moderate in density in half of the littoral area. There are 25 dwellings and three resorts located on the shoreline. There is a public swimming beach and recreational area on the north shore. Public access with parking from an improved landing is available from a town facility. There is 0.1 mile of public frontage owned by the Town of Mercer.

Surface Acres = 143.8, s.D.F. = 1.85, Maximum Depth = 31 feet

Source:1970, Surface Water Resources of Iron County,WI:WI-DNR Grand Portage Lake, T43N, R4E, Section 30

Date  1970

Author   Aquatic Biologist

Grand Portage Lake, Flambeau Flowage Watershed (UC14) Fish and Aquatic LifeGrand Portage Lake, Flambeau Flowage Watershed (UC14) RecreationGrand Portage Lake, Flambeau Flowage Watershed (UC14) Fish Consumption

General Condition

Grand Portage Lake Beach was assessed for the 2018 listing cycle; E. coli data sample data were clearly below the 2018 WisCALM listing thresholds for the Recreation use. This water was meeting its designated uses and not considered impaired.

Date  2017

Author  Ashley Beranek

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 2016 . See also 'monitoring' and 'projects'.

Reports

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 and implementation of a Total Maximum Daily Load Analysis, habitat restoration work, partnership education and outreach and more. If specific recommendations exist for this water, they will be displayed below.

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

Monitoring Projects

Watershed Characteristics

Grand Portage Lake is located in the Flambeau Flowage watershed which is 247.18 miĀ². Land use in the watershed is primarily wetland (41%), forest (36%) and a mix of open (16%) and other uses (7%). This watershed has 190.98 stream miles, 10,199.06 lake acres and 43,978.35 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

Grand Portage Lake Beach is considered a Deep Lowland under the state's Natural Community Determinations.

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's Riverine Natural Communities.

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