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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 construction and industrial activities and municipalities if stormwater from rain or snow melt leaves your 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.
1200-C Construction Stormwater General Permit Effective Dec. 15, 2020 through Dec. 14, 2025
Presentation: Implementing the Renewed 1200-C NPDES Construction Stormwater General Discharge Permit
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
Map of 303(d) listed and TMDL-approved waterbodies and tool for determining whether your property is located in the boundaries of these waterbodies
Construction Industry Compliance Assistance websiteProvides concise plain language explanations of the federal environmental regulations that apply to the construction industry and links to state and local regulators. The site is supported by an EPA grant.
For more information,visit our contacts page for the local DEQ office or agent.
For information on 1200-CN and CA permits, visit 1200-C Series Construction Stormwater Permits for Government Agencies.
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