Environmental Rules in Stanislaus County, CA (2026)
5 county-level rules, plus city-specific rules for 1 city in Stanislaus County, California.
Verified from official government sources
Stormwater Management
Stanislaus County bans any nonstormwater discharge into the county's stormwater conveyance system outside a short exemption list. Even an exempt discharge loses its exemption the moment the Regional Water Quality Control Board or the county's enforcement official finds it violates a stormwater permit or threatens public health.
Stanislaus County Stormwater Discharge Ban
Significant RestrictionsStanislaus County Code § 14.14.050(A)-(B)
A. Except as provided in Section 14.14.060, it is unlawful for any person to make or cause to be made any nonstormwater discharge. B. Notwithstanding the exemptions provided by Section 14.14.060, if the Regional Water Quality Control Board or the enforcement official determines that any otherwise exempt discharge causes or significantly contributes to violations of any stormwater permit, or con...
Erosion Control
Stanislaus County requires a county-approved drainage plan before it issues a building permit for commercial, industrial, multi-family, or large-subdivision projects likely to affect storm drainage. The developer bears responsibility for submitting the plan, and the project must also comply with the state's area-wide NPDES permit.
Stanislaus County Drainage Plan Permit Rule
Some RestrictionsStanislaus County Code § 16.10.050 (CPC Appendix D, § D4)
In all cases where proposed construction is for commercial, industrial, or public or quasipublic buildings or structures, for single-family subdivisions of 10-units or more or single-family hillside residences, for two-family, three-family, four-family, or multi-family dwellings, or for other uses which similarly involve structural ground coverage likely to affect storm drainage in the areas in...
Flood Zones
Anyone planning development in a Stanislaus County flood hazard area needs a floodplain development permit before work begins. Section 16.50.310 requires an application to the county's Floodplain Administrator, and no permit issues until the applicant satisfies these floodplain regulations plus every other applicable code.
Stanislaus County Floodplain Development Permit
Significant RestrictionsStanislaus County Code § 16.50.310 (Permits Required)
Any person, owner or authorized agent who intends to conduct any development in a flood hazard area shall first make application to the Floodplain Administrator and shall obtain the required permit for floodplain development. No permit shall be issued until compliance with the requirements of these regulations and all other applicable codes and regulations has been satisfied. No building permit...
Defensible Space
Any cabin, house, hotel, apiary, incinerator or other structure on or next to mountainous, forest or brush-covered land in unincorporated Stanislaus County must be surrounded by a cleared fire break under Section 16.55.200. The owner, or an adjoining landowner, must remove flammable vegetation, growth or combustible material for at least 30 feet on every side of the structure.
Stanislaus County 30-Foot Defensible Space Rule
Some RestrictionsStanislaus County Code § 16.55.200
Any person owning, leasing, controlling, operating, or maintaining any cabin, house, hotel, apiary, incinerator, or other building or structure upon or adjoining any mountainous, or forest, or brush covered land or land covered with flammable growth, and any person owning, leasing or controlling any land adjacent to such structures, shall at all times maintain on such person's land around and a...
Flood Elevation Requirements
In Stanislaus County flood hazard areas, accessory structures classified as Utility and Miscellaneous Group U, sheds, barns, private garages, and fences over six feet, among others, must be elevated to or above the design flood elevation under ASCE 24, or dry floodproofed to that same standard, once fully enclosed by walls.
Stanislaus County Flood Zone Elevation Standard
Some RestrictionsStanislaus County Code § 16.50.903(B) (Utility and Miscellaneous Group U)
Utility and Miscellaneous Group U includes buildings that are accessory in character and miscellaneous structures not classified in any specific occupancy in the building code, including, but not limited to, agricultural buildings, aircraft hangars (accessory to a one- or two-family residence), barns, carports, fences more than six feet (1,829 mm) high, grain silos (accessory to a residential o...
Environmental Rules by City in Stanislaus County
1 cities in Stanislaus County have their own environmental rules rules. Each link goes to that city's dedicated page with code citations.
All Stanislaus County ordinances
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