Storm Drain Rules for Portland Property Owners

Utilities and Infrastructure Oregon 3 Minutes Read ยท published February 07, 2026 Flag of Oregon

In Portland, Oregon, property owners share responsibility for keeping storm drains and curbside gutters clear to prevent local flooding and protect rivers. This guide explains who must maintain drains, what actions are allowed or prohibited, how enforcement works, and the practical steps to report or fix problems. It cites official city sources and state stormwater requirements where applicable to help owners comply and avoid fines or enforcement orders.[1]

Who is responsible

Generally, the owner of the adjacent property is responsible for maintaining the curb, gutter, and local storm drain inlets next to their property. Street trees, landscaping and private drainage features may also affect obligations; check city guidance for specifics.[1]

Keep leaves and landscaping trimmings off the curb so drains can flow.

Required maintenance duties

  • Clear leaves, litter and debris from curb inlets and grates to allow flow into the storm system.
  • Remove sediment and accumulated material that blocks inlets or causes standing water.
  • Obtain permits for any work that alters public storm infrastructure or the public right-of-way.
  • Keep records of maintenance and receipts for contracted services when required for compliance or appeals.

Prohibitions

  • Do not dump oil, paint, chemicals, soil, yard waste, or construction debris into storm drains or streets.
  • Avoid altering inlet structures without approval; unauthorized changes can violate city code.
Improper disposal into storm drains is treated differently than sanitary sewer discharges and may trigger environmental enforcement.

Penalties & Enforcement

Enforcement is primarily carried out by the City of Portland bureaus responsible for stormwater and code compliance, typically the Bureau of Environmental Services (BES) and Code Enforcement divisions. Visit the bureau guidance for official complaint and inspection procedures.[1][2]

Specific monetary fines and daily penalties: not specified on the cited page.[2]

Escalation and continuing offences: not specified on the cited page; the city typically issues notices of violation followed by civil enforcement where compliance is not achieved.[2]

Non-monetary sanctions commonly used:

  • Orders to perform corrective work or remove obstructions.
  • Administrative orders with compliance deadlines.
  • Referral to court for injunctive relief or civil penalties when necessary.

Inspection, complaints, and enforcement contact

  • Report blocked drains or washouts to the Bureau of Environmental Services or file a code complaint through the city's official reporting pages.[1]
  • Inspections are scheduled by the enforcing bureau after a complaint or as part of routine compliance checks.
Respond promptly to any notice of violation to avoid escalated enforcement.

Appeals and review

  • City notices typically include appeal or review rights; specific deadlines for appeals are not specified on the cited page.[2]
  • If you dispute enforcement, follow the procedures in the notice and contact the issuing bureau for administrative review.

Applications & Forms

Permits are required for any work in the right-of-way or changes to public storm facilities. Specific form names and fees are documented by city permitting bureaus; where a published form is not listed on the cited page, it is noted as not specified on the cited page.[2]

How-To

  1. Assess the inlet: safely remove visible leaves and litter with gloves and a rake; do not push large debris into the grate.
  2. For sediment or embedded debris, contact a licensed contractor or the city if the inlet requires mechanical cleaning or if the structure appears damaged.
  3. Report spills, hazardous material, or recurring blockages to the Bureau of Environmental Services immediately using the city reporting page.[1]
  4. If the city issues a notice, follow corrective steps, document your actions, and submit proof within the deadline to the issuing bureau.

FAQ

Who must keep the storm drain clear?
The adjacent property owner is generally responsible for maintaining the curb, gutter, and inlet next to their property; check city guidance for exceptions.[1]
What if I find oil or hazardous waste in a storm drain?
Report hazardous discharges immediately to the Bureau of Environmental Services and do not attempt to wash the material into the system; follow emergency reporting instructions on the bureau page.[1]
Do I need a permit to fix a damaged inlet?
Permits are required for work in the public right-of-way or alterations to storm structures; consult the city permitting bureau for the correct application and fees.[2]

Key Takeaways

  • Keep curbs and inlets free of debris to prevent local flooding and environmental harm.
  • Report hazards and repeated blockages to the Bureau of Environmental Services promptly.

Help and Support / Resources

  1. [1] City of Portland Bureau of Environmental Services - Stormwater information and reporting
  2. [2] City of Portland - Municipal code and enforcement provisions
  3. [3] Oregon Department of Environmental Quality - MS4 stormwater permit information

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