Click to Home
Go To Search
Explore Eugene
Public Works Engineering

Water Resource Manager
Therese Walch

99 East Broadway
Suite 400
Eugene, OR 97401
ph. 541-682-5549


Info Advanced
NPDES Municipal Stormwater Permit
NPDES Municipal Stormwater Permit
The City of Eugene holds a permit under the federal Clean Water Act for the municipal stormwater it discharges directly into the Willamette River and indirectly into the Willamette River through other local waterways, including Amazon Creek. The permit, formally called the Phase I National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) permit, requires that the city reduce the discharge of pollutants from the municipal system to the maximum extent practicable, and includes monitoring and reporting requirements, as well as a set of best management practices that define the city's Stormwater Management Plan (SWMP).

First issued in 1994, the permit was renewed twice, once in 2004 and again in 2010. The Department of Environmental Quality (DEQ) administers federal NPDES permits for municipalities and other local agencies in Oregon. 

Permit Activities
Information on the progress of permit activities is summarized in annual reports that are submitted to DEQ each December. Each annual report provides information on the progress of permit activities during the reporting period, which is the previous fiscal year (July 1 through June 30). Information provided includes overall program management, status of program implementation, adaptive management, and a water quality monitoring report. 
The City of Eugene has prepared a Stormwater Annual Report for the reporing period July 1, 2012, through June 30, 2013. This report is available online (see links to the right). The report can also be viewed between 8 a.m. and 5 p.m. in printed form at the Public Works Administration office, 101 E. Broadway, Suite 400, Eugene, OR 97401.
The comment period for the 2013 draft Stormwater Annual Report closed on Nov. 22, 2013. Comments received after November 22, 2013, will be taken into consideration for possible future modifications to the City's stormwater program.
Please send written comments to NPDES Permit, Eugene Public Works, 101 East Broadway, Suite 400, Eugene, OR 97401. Comments may also be e-mailed

Links to Related Documents
NPDES Stormwater Permit 
Eugene MS4 Permit 
Eugene Permit Evaluation Report 
Stormwater Management Plan 

Stormwater Monitoring Plan 
Stormwater Monitoring Plan 
Appendix A-1 
Appendix A-2 
Appendix B 
Appendix C 
Appendix D

NPDES Annual Reports
2013 Stormwater Annual Report
   Appendix A
   Appendix B
   Other appendices available on request 
2012 Stormwater Annual Report
Appendix A (Water Quality Data)
Appendix B (Boxplots WQ Parameters)
Appendix C (Macroinvertebrate Study)
Appendix D (Physcial Assessment)
Appendix E (2010 MS4 Permit)
Appendix F (Legal Authority)
Appendix G (Adaptive Management Tool)
Appendix H (Updated SWMP)
Appendix I (Public Comment)

2011 Stormwater Annual Report 

Year 7 (2010) Annual Report 
Year 6 (2009) Annual Report 
Year 5 (2008) Annual Report 
Year 4 (2007) Annual Report 
Year 3 (2006) Annual Report 
Year 2 (2005) Annual Report 

WQ Data Related Documents  
Water Quality Data (2012 Data)
Readme file (for Water Quality Data)
CSWMP (Stormwater Program Policies) 
TMDL Plan (Total Maximum Daily Load Implementation Plan)
TMDL Report (TMDL - Year 3 Report)