Fish and Aquatic Life
Hornby Creek, located in south central Vernon County just southwest of Viroqua, flows for nearly six miles in a northwesterly direction before reaching the South Fork of the Bad Axe River. It has a moderate gradient of 40 feet per mile and drains steep forested land, rolling agricultural land and lowland pastures. Hornby is a Class I trout stream for its entire length and contributes almost ten miles of Exceptional Resource Waters and Class I Trout waters to the Bad Axe River Watershed.
The most recent survey, completed in 1975, documented cool, clear water with a stream bottom consisting mainly of boulder, rubble, gravel and sand with lesser amounts of silt, detritus and bedrock. In-stream habitat structures provided cover for trout in Hornby Creek. Naturally reproducing brown trout, a variety of forage fish, aquatic invertebrates and vegetation were all documented. A follow up fishery survey conducted in 1984 confirmed a healthy naturally reproducing brown trout fishery. Since this data is nearly 20 years old, an updated fish and habitat survey should be conducted on Hornby Creek. WDNR records indicate Hornby Creek was stocked with brown trout from 1960 to 1993. Two road crossings, Eagles Park, DNR owned land and DNR owned easements all provide access to Hornby Creek.
Author Aquatic Biologist
The Hornby Creek was assessed during the 2018 listing cycle; total phosphorus sample data clearly met the 2018 WisCALM listing thresholds for the Fish and Aquatic Life use. Available biological data did not indicate impairment (i.e. no macroinvertebrate or fish Index of Biotic Integrity (IBI) scored in the "poor" condition category). This water was meeting this designated use and not considered impaired.
Author Amanda Smith
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 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|
|1640700||Hornby Creek||10013535||Hornby Creek St. 1 - State Machinery Crossing By Parking Lot||1/1/2015||1/1/2015||Map||Data|
|1640700||Hornby Creek||10013536||Hornby Creek St. 2 - Lower End Stateland (Previous Owner Olsen)||Map||Data|
|1640700||Hornby Creek||633046||Hornby Creek - Tn Rd Nwsec 30 T12 R5w||5/14/1979||11/7/1979||Map||Data|
|1640700||Hornby Creek||10035008||Hornby Creek - Stewart Driveway||1/1/2015||1/1/2015||Map||Data|
|1640700||Hornby Creek||10039652||Hornby Creek at Lo Hornby Hollow Rd||7/9/2011||9/30/2011||Map||Data|
|1640700||Hornby Creek||10010233||Hornby Creek - along Hornby Rd in fishery area||6/29/2003||1/1/2015||Map||Data|
Hornby Creek is located in the Bad Axe River watershed which is 195.49 mi². Land use in the watershed is primarily agricultural (55%), forest (37%) and a mix of suburban (6%) and other uses (3%). This watershed has 468.27 stream miles, 489.81 lake acres and 2,552.28 wetland acres.
Nonpoint Source Characteristics
This watershed is ranked High for runoff impacts on streams, Not Ranked 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.