Fish and Aquatic Life
Merrill Flowage is a very soft water drainage lake (impoundment) on the Wisconsin River having slightly acid, light brown water of low transparency. The shoreline is entirely upland hardwood. The littoral zone is 55 percent sand, 25 percent silt, 17 percent gravel and 3 percent rubble. About 30 percent of the flowage is less than 3 feet deep. The fish population consists of northern pike, walleye, largemouth bass, smallmouth bass, and panfish. The nature of the flowage suggest both spring and fall migratory waterfowl usage. Navigable water type public access is possible via the Wisconsin River. There are 41 dwellings and 5 factories on the perimeter of the flowage. The water control structure has a 15-foot head and is owned by the Wisconsin Public Service Corporation.
Source: 1982, Surface Water Resources of Lincoln County Merrill Flowage, T31N, R6E, Sec. 14 Surface Acres = 163.6, Maximum Depth = 11 feet, Secchi Disc = 4 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|
|1481100||Merrill Flowage||10044869||Merrill Flowage||7/4/2014||9/11/2016||Map||Data|
|1179900||Wisconsin River||353019||Wisconsin River - Off Oregon St Merril||6/27/1977||6/27/1977||Map||Data|
|1179900||Wisconsin River||10037933||LINCOLN WOOD PRODUCTS MGP - MERRILL||10/1/2002||10/1/2002||Map||Data|
|1179900||Wisconsin River||10018764||Merrill Flowage -- Access||Map||Data|
|1179900||Wisconsin River||10044869||Merrill Flowage||7/4/2014||9/11/2016||Map||Data|
Merrill Flowage is located in the Devil Creek watershed which is 68.50 mi². Land use in the watershed is primarily forest (41.40%), agricultural (29.20%) and a mix of grassland (13.70%) and other uses (15.70%). This watershed has stream miles, lake acres and 2,336.54 wetland acres.
Nonpoint Source Characteristics
This watershed is ranked Medium for runoff impacts on streams, Low 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.