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Ashland Creek Bacteria Study

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Download Report

Ashland Creek Bacteria Study Report (PDF 3.2 MB)

Appendix A. Ashland Creek Bacteria Study Volunteer Handbook (PDF 1.3 MB)

Appendix B. Ashland Creek Bacteria Study E. coli Data, Ashland Creek (PDF 112 KB)

Appendix B. Ashland Creek Bacteria Study E. coli Data, TID Ditch (PDF 64 KB)

 The Ashland Creek Bacteria Study is a collaboration between Rogue Riverkeeper, Southern Oregon University, The City of Ashland, Oregon Department of Environmental Quality, Bear Creek Watershed Council and concerned citizens.  The study seeks to identify the sources of E. coli bacteria which lead to a chronic E. coli bacteria pollution issue on Ashland Creek.  These high E. coli bacteria levels have lead to public health notice postings along Ashland Creek almost every year since the city began testing for E. coli.

Far from being an Ashland Creek specific issue, E. coli and Total Coliform bacteria levels are of concern throughout the Rogue River Basin.  According to DEQ data there are hundreds of miles of streams and rivers in the Rogue Basin that exceed Oregon State water quality standards for E. coli bacteria, including many which are on the Clean Water Act’s 303(d) water quality impaired list for E. coli pollution.

In addition to Ashland Creek other waterways in the Rogue Basin have at least part of their length listed as having exceeded health standards (126 E. coli MPN/100mL 30 day mean with 5 sample minimum or 406 E. coli MPN/100mL in any one sample).  Included are the Rogue River, Illinois River, Applegate River, Little and Big Butte Creeks, Bear Creek, Evans Creek, and numerous smaller tributaries.

Our study conducted field work from June through October of 2010, you can download our final report containing our findings and recommendations above.

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