Fish and Aquatic Life
drains to the Rock River at Janesville and is one of four streams of the same name in the county. This short, spring-fed stream was managed for trout into the 1950s, when stocking was discontinued due to siltation and channel modifications that destroyed habitat. The stream's watershed is intensively farmed. Spring Brook's water quality is affected by siltation from farming operations and urban runoff.
Author Aquatic Biologist
From: Ball, Joseph R., and Ronald J. Poff, Lake and Stream Classification Project. Surface Water Resources of Rock County, Department of Natural Resources, 1970.
Surface Acres = 1.82, Miles = 1.25, Gradient = 40 feet per mile.
A short spring fed stream located in the City of Janesville and tributary to the Rock River. The stream was managed for trout up to 1958 when stocking was suspended due to siltation and pollution. The present fish population is composed of forage species only. Four city parks are located along the shores and provide access to the stream.
Author Surface Water Inventory Of Wisconsin
Spring Brook was assessed during the 2018 listing cycle; new total phosphorus sample data were clearly below 2018 WisCALM listing thresholds for the Fish and Aquatic Life use. This water is meeting this designated use and is not considered impaired.
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 2016 . See also 'monitoring' and 'projects'.
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 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|
|WBIC||Official Waterbody Name||Station ID||Station Name||Earliest Fieldwork Date||Latest Fieldwork Date||View Station||View Data|
|796800||Spring Brook||10031037||Palmer Park Beach||6/1/2010||9/13/2017||Map||Data|
Spring Brook is located in the Blackhawk Creek watershed which is 108.11 mi². Land use in the watershed is primarily agricultural (68%), suburban (18%) and a mix of urban (5%) and other uses (9%). This watershed has 94.55 stream miles, 96.88 lake acres and 415.15 wetland acres.
Nonpoint Source Characteristics
This watershed is ranked Low for runoff impacts on streams, Not Ranked 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.