Skip to main content
CityRuleLookup

Fresno County, CA Environmental Rules: Stormwater Management (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Governing chapter
Fresno County Code Chapter 17.64, Drainage of Land
Administering agency
Fresno Metropolitan Flood Control District
Fee basis
Per gross acre, set by Board resolution
Fee adjusted
Every March 1st using national construction cost index
Agricultural exemption
Single-family home on 5+ acres used for farming
Appeal method
Pay fee under protest, director reviews
Penalty
General penalty under County Code Section 1.12.010

Summary

Fresno County Code Chapter 17.64 requires anyone developing or dividing land in the unincorporated county to pay a local drainage fee before a map records or a development permit issues, funding the storm drainage facilities the county needs to control surface and storm water. The Fresno Metropolitan Flood Control District administers the fees; the Board of Supervisors adjusts the fee schedule every March 1st using the national construction cost index.

City-specific rules exist: Clovis, and Fresno have their own stormwater management rules that differ from Fresno County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

The board of supervisors declares and finds that the development of land for urban uses substantially accelerates the concentration of surface and storm waters, and that it is necessary to require the construction of and to establish and collect fees to defray the actual or estimated cost of constructing planned local drainage facilities for the control and safe disposal of surface and storm waters from local drainage areas in order to promote and protect the public welfare, safety, peace, comfort, convenience and the general welfare, and for the accomplishment of the purposes more particularly set forth as follows:

Source: Fresno County Stormwater ManagementView official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 51).

Full Breakdown

010). 030). 050). 030(D)). 060). 100).

Violations & Fines

A disputed drainage fee can be paid under protest and reviewed by the director, who determines the correct amount according to law (Section 17.64.070); disputes over required dedications or improvements follow the appeal procedure of the ordinance under which the condition was imposed. Violating any provision of Chapter 17.64, including nonpayment of an owed fee, is punishable under the general penalty set out at Fresno County Code Section 1.12.010 (Section 17.64.110).

Frequently Asked Questions

Do I have to pay a drainage fee to build in unincorporated Fresno County?
Yes, if your parcel sits within a local drainage area established under Chapter 17.64. The fee is calculated per gross acre by the Fresno Metropolitan Flood Control District and must be paid before the county records your parcel or final map, or before it issues a development permit, whichever applies to your project under Section 17.64.030.
Are farms exempt from Fresno County's drainage fee?
Yes. Section 17.64.030(D) exempts a single-family home and accessory structures built on five or more acres used primarily for raising crops, poultry, or livestock, along with fences, pole lines, and additions to an existing home that don't add more than 1,000 square feet.
Who collects and spends Fresno County's local drainage fees?
The Fresno Metropolitan Flood Control District calculates and can collect the fees under an agreement with the county, then deposits them into a planned local drainage facilities fund for that specific drainage area, spending the money only on acquiring or constructing the drainage facilities the local drainage plan calls for, per Section 17.64.100.
Can I challenge a drainage fee I think is wrong?
Yes. Section 17.64.070 lets you pay the fee under protest; the county director then reviews and determines the correct amount according to law, and the county recovers any litigation costs from the district if the dispute goes further.

Sources & Official References

Other rules in Fresno County

All Fresno County rules

California rules heatmap·Compare Fresno County to another location·View the California environmental rules overview

Get notified when Stormwater Management in Fresno County, CA changes

We'll email you the moment we detect a change in the code. No spam, unsubscribe anytime.

We'll never sell or share your email. One-click unsubscribe in every email.

See something wrong?

Help us keep this page accurate. If you notice an error or outdated information, let us know.

Stormwater Management in Cities Across Fresno County