Madera, CA Environmental Rules: Stormwater Management (2026)
Key Facts
- Requirement
- Approved storm drain system for every subdivision
- Design standard
- Sized for watershed's ultimate development
- Off-site duty
- Protect abutting/off-site property from added runoff
- Enforcement point
- Required before final or parcel map approval
- Reviewed by
- City Engineer and City Council
- Adopted
- Ord. 252 C.S., passed August 3, 1981
Summary
Every new subdivision in Madera must collect and route its storm water runoff through an approved storm drain system sized for the watershed's full future development, not just the subdivider's own parcel. Madera Municipal Code Section 10-2.702.2 also makes the subdivider responsible for protecting neighboring and off-site properties from any increase in runoff the project causes.
Storm water runoff from the subdivision shall be collected and conveyed by an approved storm drain system. The storm drain system shall be designed for ultimate development of the watershed. The storm drain system shall provide for the protection of abutting and off-site properties that would be adversely affected by any increase in runoff attributed to the development; off-site storm drain improvements may be required to satisfy this requirement.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2024 S-50: Current through Ordinance 1010 C.S., passed 6-5-24).
Full Breakdown
Madera's subdivision improvement standards, in Title X, Chapter 2 of the Municipal Code (Ord. 701. 2, titled Storm Drainage, sets the standard governing runoff: the storm drain system serving the subdivision must be an approved system, and it must be engineered for the watershed's ultimate development, meaning the pipes and channels have to be sized for the drainage area as it will look once every parcel upstream is built out, not just for the lots in the current phase. The same section makes the subdivider responsible for the drainage impact on land outside the project boundary: the system must protect abutting and off-site properties from any increase in runoff the development causes, and the city can require the subdivider to build off-site storm drain improvements, such as extending a downstream channel or upsizing a receiving pipe, to satisfy that protection requirement.
5 requires underground utilities along subdivision streets, all reviewed by the City Engineer as part of the same subdivision improvement plan check that covers storm drainage design.
Violations & Fines
Section 10-2.701(B) blocks final approval outright: the City Council will not accept a final map, and the City Engineer will not accept a parcel map, until the subdivider has either built the required storm drainage and other improvements or signed a subdivision improvement agreement committing to complete them. The City Engineer's plan check under Section 10-2.702.2 can reject a drainage design that fails to protect abutting or off-site property from increased runoff.
Frequently Asked Questions
Does Madera require new subdivisions to install storm drains?
How big does the storm drain system have to be?
Who pays for drainage improvements outside the subdivision boundary?
What happens if a subdivider skips the storm drainage requirement?
Sources & Official References
Other rules in Madera
California rules heatmap·Compare Madera to another location·View the California environmental rules overview
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