Impaired Water - Eagle Creek (Eagle Creek)
Buffalo County, Wisconsin
9.09 - 17.56
Condition has remained stable; water is not impaired.
Eagle Creek was included in the Waumandee Creek Priority Watershed project area where several types of management practices were implemented, including manure storage facilities, livestock crossings, and streambank fencing and stabilization. These practices resulted in a statistically significant reduction in suspended solids concentrations and increase in habitat condition. A total suspended solids (TSS) Total Maximum Daily Load (TMDL) report was approved by EPA in 2003 that addresses the degraded habitat impairment. Post-implementation assessment reports document recovery of this stream's habitat quality (Wang, Lyons, and Kanehl, 2002) and decreased TSS concentrations (USGS, unpublished draft). Due to restored aquatic life habitat, this water was delisted from the impaired waters list in 2012.
This water was assessed during the 2018 listing cycle; new biological (fish Index of Biotic Integrity (IBI) scores) sample data were clearly below 2018 WisCALM listing thresholds for the Fish and Aquatic Life use.

Assessments of new fish and bug sample data during the 2020 listing cycle confirm good condition of Aquatic Life use.
Listing Details
Sediment/Total Suspended Solids
Listed For
Current Use
Listing Status
Water Delisted
Attainable Use
Delisted 2012
Designated Use
303(d) ID
Listing Date
Impaired Water Notes
This stream is proposed for delisting from the impaired waters list. The stream is currently in Category 4a (water is impaired, and has an EPA-approved TMDL), and DNR proposes to place in Category 2 (available information indicates that one or more designated uses are met) because new data indicate that the water is now attaining water quality standards. TSS concentrations measured after implementation of management practices were found to be significantly less than pre-implementation concentrations (see attached USGS report, unpublished draft). In addition, statistically significant improvements in stream habitat condition were observed after installation of riparian management practices (Wang, Lyons and Kanehl, 2002).

Impaired Water Notes
Current reports available online (Graczyk 2010) are in draft form and do not contain all the data and illustrations that were used to propose delisting of this water segment.