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Stormwater runoff from land and impervious areas such as paved streets, parking lots, and building rooftops during rainfall and snow events often contain pollutants that could adversely affect water quality. National Pollutant Discharge Elimination System permits are required for stormwater discharges to surface waters from municipalities if stormwater from rain or snow melt leaves a site through a "point source" and reaches surface waters either directly or through storm drainage. A point source is a natural or human-made conveyance of water through such things as pipes, culverts, ditches, catch basins, or any other type of channel.
Please note: Stormwater 1200-CA permit applications have moved to a new electronic data management system called
Your DEQ Online.
County Maps (Zip file, 11MB)Courtesy of USDA National Resource Conservation Service
Oregon Soil Data (Zipped .gdb files)
Oregon Climate Data (Zipped .gdb files)
Presentation Slides: Calculating BMP Sediment Removal Effectiveness Using RUSLE2 for Natural Buffer Zone Encroachment
DEQ Stormwater Permitting is now operating in DEQ's newest online platform, called Your DEQ Online. Please refer to the fact sheets, instructional guides, video tutorials and webinars below for more information on how to create a new account. The DEQ Stormwater permitting program is no longer accepting paper applications or reports, all stormwater permitting transactions must be conducted through a Your DEQ Online account.
Access Your DEQ Online Submit a Help Request to Your DEQ Online Help Desk
For more information,visit our contacts page for the local DEQ office or agent.
For information on 1200-C Construction Stormwater Series Permits for general use, view the 1200-C Construction Stormwater Permit - General Use page.
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