Fish and Aquatic Life
Blackhawk Lake, in the Otter and Morrey Creeks Watershed, is a 212.50 acre lake that falls in Iowa County. This lake is managed for fishing and swimming and is currently considered impaired.
Author Ashley Beranek
Blackhawk Lake was evaluated every two-year cycle from 2012 to 2022; in the 2016 cycle excess algal growth was identified and in the 2022 elevated phosphorus was also identified. This lake is on the Impaired Waters List.
Author Ashley Beranek
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|
|1239400||Blackhawk Lake||253210||Black Hawk Lake - Deep Hole||Map||Data|
|1239400||Blackhawk Lake||10002726||Black Hawk Lake||7/27/1999||6/3/2022||Map||Data|
|1239400||Blackhawk Lake||253124||Black Hawk Lake - Deep Hole||4/24/1997||8/24/2022||Map||Data|
|1239400||Blackhawk Lake||10007679||Black Hawk Lake - Recreation Area at Beach||7/21/2011||9/25/2020||Map||Data|
|1239600||Unnamed||10012293||Griffin Creek - Entrance To Blackhawk Lake - Where Park Road Goes Across The Creek||5/1/2006||9/25/2020||Map||Data|
|1239400||Blackhawk Lake||10018029||Blackhawk Lake -- Access||5/5/2005||9/13/2022||Map||Data|
|1239400||Blackhawk Lake||10015111||Black Hawk Lake||Map||Data|
|1239400||Blackhawk Lake||10017136||Blackhawk Lake - Left Dam Deepest Hole||5/10/2006||5/10/2007||Map||Data|
|1239400||Blackhawk Lake||10015108||Blackhawk Lake Baseline 1||9/25/2020||6/2/2021||Map||Data|
Blackhawk Lake is located in the Otter and Morrey Creeks watershed which is 198.69 mi². Land use in the watershed is primarily forest (53.60%), grassland (24.60%) and a mix of agricultural (14.10%) and other uses (7.70%). This watershed has 437.57 stream miles, 351.55 lake acres and 5,785.74 wetland acres.
Nonpoint Source Characteristics
This watershed is ranked Not Ranked 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.