Fish and Aquatic Life
Cochrane Ditch (or Rose Valley) is a nine-mile stream, located within the Rose Valley Subwatershed in the western portion of the Waumandee Creek Watershed, adjacent to the Mississippi River. Rose Valley Creek becomes the Cochrane Ditch. This ditch is an extensively channelized conduit that receives flow from Belvidere Valley Creek. Sedimentation is the impairment of this stream. Currently, Cochrane Ditch supports a warm water forage fishery, but the potential use is a Class III trout fishery.
Author Aquatic Biologist
In most cases, the gravel substrate is extensively covered by sand, silt, and soft organic matter preventing a suitable habitat for fish and macroinvertebrate communities. Filling-in of pools reduces the amount of available cover for juvenile and adult fish. Sedimentation of riffle areas reduces the reproductive success of fish by reducing the exposed gravel substrate necessary for appropriate spawning conditions. Sedimentation also affects macroinvertebrate biomass (fish food source) which tends to be lower in areas with predominantly sand substrate than a stream substrate with a mix of gravel, rubble, and sand. Sedimentation also causes elevated turbidity which reduces the penetration of light necessary for photosynthesis in aquatic plants, reduces the feeding efficiency of visual predators and filter feeders, and lowers the respiratory capacity of aquatic invertebrates by clogging their gill surfaces. In addition, other contaminants such as nutrients (phosphorus) attached to sediment particles can be transported to streams during runoff events. Coverage of the substrates with sediment constitutes “an objectionable deposit” under the water quality standards criterion noted in S.NR 102.04(1) (a) cited below. The creeks are limited by excessive sediment loading and habitat unsuitable to support a coldwater fishery.
Author Aquatic Biologist
Impaired waters listing from the mouth at Whitman Wildlife Area near Cochrane, crossing STH 35 into Rose Valley and ending in Belvidere township. (Total: 9 miles). The water is a WWFF, codified use is Fish and Aquatic Life (FAL Default) with a potential use of Cold III (Coldwater Fishery). The cause of the problems include reduced habitat, increased sedimentation, possibly temperature issues from streambank erosion and stream ditching. Monitoring data is limited but some work is described in the 1996 Buffalo-Trempealeau Basin Report. Date reviewed: 3-4-02, revised 12/16/03.
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.
TMDL (USEPA) Approved
TMDL for Sediment Impaired Streams in the Waumandee Creek Watershed - Cochrane Ditch. This TMDL project is designed to restore water resource substrate, which In most cases, the gravel substrate is extensively covered by sand, silt, and soft organic matter
preventing a suitable habitat for fish and macroinvertebrate communities. Filling-in of pools reduces the amount of available cover for juvenile and adult fish. Sedimentation of riffle areas reduces the reproductive success of fish by reducing the exposed gravel substrate necessary for
appropriate spawning conditions. Sedimentation also affects macroinvertebrate biomass (fish food source) which tends to be lower in areas with predominantly sand substrate than a stream substrate with a mix of gravel, rubble, and sand.
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|
Unnamed is located in the Waumandee Creek watershed which is 221.97 mi². Land use in the watershed is primarily forest (49%), agricultural (24.60%) and a mix of grassland (13.70%) and other uses (12.60%). This watershed has 508.29 stream miles, 3,011.30 lake acres and 8,253.68 wetland acres.
Nonpoint Source Characteristics
This watershed is ranked Not Available for runoff impacts on streams, Not Available for runoff impacts on lakes and Medium for runoff impacts on groundwater and therefore has an overall rank of Medium. 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.