Santa Rosa, CA Environmental Rules: Stormwater Management (2026)
Key Facts
- Permit required
- Any alteration, obstruction, or deposit in a drainage channel
- Issuing agencies
- City Engineer/Public Works (encroachment) or Community Development (grading)
- Permit term
- Up to one year, extendable once for good cause
- Emergency exception
- Allowed if City notified and permit filed within 10 days
- Violation penalty
- Misdemeanor under Section 17-12.090
- Unpaid abatement
- Becomes a property lien after 60 days unpaid
Summary
Santa Rosa bans altering, blocking, or dumping material into any storm water channel, pipe, or drainage easement, natural or manmade, without a written City permit. Municipal Code Section 17-12.010 requires an encroachment permit from the City Engineer or Public Works, or a grading permit from Community Development, before the work starts. Skipping the permit is a misdemeanor, and unresolved violations can become a property lien.
(A) No person shall commit, or cause or permit to be committed, any of the following acts unless a written permit, or permits, authorizing the act has been obtained from the City: (1) Impair, impede or obstruct the natural flow of storm waters or other water running in a defined channel, natural or manmade, or in a pipe, or other component of any storm water drainage system; (2) Deposit any material in any such channel, pipe or drainage system; (3) Alter the surface of the land so as to reduce the capacity, or alter the flow characteristics of any such channel; (4) Construct, alter or repair any stormwater drainage structure or facility... (B) The permit(s) required by this section shall be obtained prior to the commission of the act(s) or the commencement of any work associated with such act(s), except in cases of emergency work as described and permitted in Section 17-12.060.
Full Breakdown
Santa Rosa's storm water permit rule sits in Municipal Code Chapter 17-12, Article I: Drainage. 010 makes it unlawful to impair, impede, or obstruct the natural flow of storm water in any channel, pipe, or drainage system, to deposit material in one, to reduce channel capacity, to build or alter any drainage structure, or to interfere with a recorded drainage easement, unless the City has issued a written permit first. 020. 030 covering up to 100 percent of the estimated cost of the work. 015 separately makes property owners responsible for maintaining, cleaning, or enlarging any driveway or private street culvert that restricts flow in the adjoining street's drainage system, at the owner's own expense.
060, but the person doing the work must notify the Department of Public Works as soon as possible and apply for a permit within 10 calendar days. 070 lets the City serve a notice to abate within 10 days; if the owner doesn't fix it, the City can do the work and bill the owner, and an unpaid bill over 60 days old becomes a lien on the property collected like a special assessment.
Violations & Fines
Violating any provision of Article I is a misdemeanor under Section 17-12.090, and a wilful violation of permit terms is a separate misdemeanor. The City Engineer can order abatement, bill the property owner for the cost, and record a lien if the charge goes unpaid 60 days after billing. Under Article II, discharging pollutants to the storm system in violation of an NPDES-related order can bring civil liability up to the amount the state could fine the City, and every day a violation continues is a separate offense under Section 17-12.230.
Frequently Asked Questions
Do I need a City permit to alter a drainage ditch on my Santa Rosa property?
Who pays if my driveway culvert backs up the street's drainage?
Can I do emergency drainage repairs without waiting for a permit?
What happens if I don't fix a drainage violation after the City's notice?
Sources & Official References
Other rules in Santa Rosa
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Stormwater Management in Nearby Cities
How other cities in Sonoma County handle stormwater management.