Fish and Aquatic Life
Source: 1969, Surface Water Resources of Sawyer County Lac Court Oreilles, T39, 40N, R8, 9W,
A soft water, drainage lake having a normal estimated outlet Of 25.0 cfs flowing into Little Court Oreilles Lake on the Couderay River. It is of the largest natural lakes in the state. It has a varied fish population of northern pike, walleye, muskellunge, largemouth bass, smallmouth bass, bluegill, perch, black crappie, rock bass, pumpkinseed, and brown and yellow bullheads. Cisco are also abundant and lake trout have been recently stocked. Other fish species present include longnose gar, white suckers, and minnow species. Competition between northern pike and muskellunge has been a management problem here. Northern pike, apparently recently, have introduced expanded at the sacrifice of muskellunge. All the streams flowing into the lake are non-trout waters. The shoreline is predominately upland pine with steep bluffs in many places; however, nearly 500 acres of predominately bog wetlands provides habitat for waterfowl. Muskrats are also common. Private development amounts to 14 resorts, five boat rentals, 206 cottages, and the facilities of four private fishing clubs. Three commercial cranberry marshes utilize water from the lake. Of the 25.36 miles of lakeshore only 0.85 miles is in public ownership. The Wisconsin Dept. of Natural Resources owns 0.54 miles of this, while the remaining public frontage consists of 34 platted access sites, only three of which are developed. Two of these developed accesses are located southwest of the inlet from Grindstone Creek, and the other is at Victory Heights opposite Musky Bay.
Surface Acres = 5,638.8, Maximum Depth = 90 feet, M.P.A. = 45 ppm, Secchi Disk = 15 feet
Author Surface Water Inventory Of Wisconsin
ATTAINS Alternative Restoration Approach
Courte Oreilles Lake Association is sponsoring a project to design and install shoreline buffer restorations on Lac Courte Oreilles and Little Lac Courte Oreilles Lakes. Project tasks include: 1) Shoreline buffer design/restoration on approximately 25 shoreline sites; 2) Modeling to estimate TSS and TP reductions from buffer restorations; 3) Develop and distribute shoreline buffer educational materials.
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|
|2390800||Lac Courte Oreilles||10038981||Lac Courte Oreilles - Musky Bay East Cranberry Outlet (MB-2)||2/14/2000||10/24/2018||Map||Data|
|2390800||Lac Courte Oreilles||10038983||Lac Courte Oreilles - Musky Bay North Shoreline (MB-4)||4/11/2000||10/24/2018||Map||Data|
|2390800||Lac Courte Oreilles||583068||Lac Court Oreilles - Musky Bay||5/29/1996||7/10/2009||Map||Data|
|2390800||Lac Courte Oreilles||10033577||Lac Courte Oreilles - Musky Bay (MB-1)||10/16/1997||9/25/2019||Map||Data|
|2390800||Lac Courte Oreilles||10037854||Lac Courte Oreilles - Musky Bay-Entrance 12 Feet (MB-B)||1/7/2010||9/25/2019||Map||Data|
|2390800||Lac Courte Oreilles||10005585||Lac Courte Oreilles||4/21/1985||4/29/2019||Map||Data|
|2390800||Lac Courte Oreilles||583080||La Cor Nearshore Se Musky By||5/28/1996||6/17/1996||Map||Data|
|2390800||Lac Courte Oreilles||10038982||Lac Courte Oreilles - Musky Bay West Cranberry Outlet (MB-2A)||4/11/2000||10/24/2018||Map||Data|
|2390800||Lac Courte Oreilles||10038984||Lac Courte Oreilles - Musky Bay West of Deep Hole (MB-A)||1/7/2010||3/7/2013||Map||Data|
Lac Courte Oreilles is located in the Couderay River watershed which is 212.25 mi². Land use in the watershed is primarily forest (64.90%), wetland (13.50%) and a mix of open (12.90%) and other uses (8.70%). This watershed has 211.96 stream miles, 18,300.76 lake acres and 14,697.69 wetland acres.
Nonpoint Source Characteristics
This watershed is ranked Low for runoff impacts on streams, High 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.