Fish and Aquatic Life
Little Brook Creek is a four-mile long stream and is classified as a Warm Water Forage Fishery. The creek empties into the lower portion of the Little Rib River. Limiting factors of in-stream habitat in the lower reaches include deteriorating banks, fine sediment deposition, shallow channel depth and no adult fish cover. Limiting factors of habitat in the upper reaches include fine sediment deposition and lack of riffles.
Fishery surveys completed in the upper and lower reaches of Little Brook Creek found different fish communities. The fishery at the upper site was represented by warm water species with brook stickleback and central mudminnow being the most dominant. The lower IBI score was a result of high numbers of tolerant fish species and low numbers of top carnivore and lithophil species. However, the IBI score may not be accurate due to the stream being less than the minimum number of fish captured necessary to calculate an accurate IBI.
Fishery surveys found relatively high densities of brook trout at the lower site. The fishery was represented by several year classes of trout including young of the year, indicating that natural reproduction is occurring.
The presence of brook trout at the lower site is likely a result of colder water temperatures and improved habitat conditions for trout. A comparison of instantaneous temperatures between the two sites indicate that water temperatures were eight degrees Fahrenheit cooler at the lower site. Streamflow measurements collected within one day of each other show that discharge was approximately 1 cfs higher at the lower site. Since no tributary inputs were found between the sites, increased streamflow and colder water temperatures are likely a result of groundwater input.
Based on fishery survey results, the proposed biological use classification for Little Brook Creek would be Class I trout water from the mouth to County Highway O. The classification upstream of County Highway O would remain Warm Water Forage Fish.
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
|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|
|1452200||Little Brook||10016142||Little Brook Creek - 60 M Upstream Of 72nd Ave||10/16/2001||10/16/2001||Map||Data|
|1452200||Little Brook||10008289||Little Brook Sunnyvale Ave/72nd Site 7||Map||Data|
|1452200||Little Brook||10008318||Little Brook Cth O Site 25||Map||Data|
Little Brook is located in the Little Rib River watershed which is 92.44 mi². Land use in the watershed is primarily forest (37.40%), agricultural (31.40%) and a mix of grassland (15.40%) and other uses (15.90%). This watershed has stream miles, lake acres and 2,768.75 wetland acres.
Nonpoint Source Characteristics
This watershed is ranked Medium 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.