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Stanislaus County, CA Noise from Specific Sources: Generator Noise (2026)

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

Key Facts

Governing section
§ 18.04.250, Stanislaus County Code
Quiet hours
10:00 p.m. to 6:00 a.m.
Noise limit
No more than 50 decibels heard outside campsite
Covers
Generators, machinery, electronics, amplified sound
Scope
County parks and campgrounds, not private property
Penalty
Infraction under § 18.06.190

Summary

In Stanislaus County parks and campgrounds, Section 18.04.250 sets quiet hours from 10 p.m. to 6 a.m., during which amplified sound, equipment, electronics and machinery, including generators, that can be heard outside a campsite may not exceed fifty decibels. The rule targets overnight camping areas rather than private residential property countywide.

These county ordinances apply to unincorporated areas of Stanislaus County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

"Quiet hours" are the hours between ten p.m. until six a.m. the following day when amplified sound, equipment, electronics, machinery including generators, or noise that can be heard outside the campsite, of no more than fifty decibels, are prohibited.

Full Breakdown

the following day, during which amplified sound, equipment, electronics, or machinery, expressly including generators, that can be heard outside the campsite, at a level of more than fifty decibels, is prohibited. 04 of Title 18, Parks and Recreation, so it governs conduct within county-owned or operated recreation areas and campgrounds rather than private residential property generally; there is no county-wide residential generator-noise ordinance in this part of the code. 005). that another campsite can hear above fifty decibels is in violation regardless of intent; the fifty-decibel and time-of-night thresholds are the operative test, not a blanket ban on generators.

190 makes violation of park rules and regulations an infraction 'unless otherwise stated in local, state, or federal law,' a quiet-hours violation defaults to an infraction rather than a misdemeanor unless another provision elsewhere in the title says otherwise.

Violations & Fines

Section 18.06.190 makes violation of Stanislaus County park rules and regulations, including the quiet-hours generator limit in Section 18.04.250, an infraction, citing Sections 1.36.010 and 1.36.020, unless another law states a different penalty. Park staff or an authorized agent can also order a person who violates a recreation-area rule to leave the area for up to twelve months, and failing to obey that order is itself a misdemeanor.

Frequently Asked Questions

Can I run a generator overnight at a Stanislaus County campground?
Only if it stays under the quiet-hours limit: Section 18.04.250 bars generators and other machinery or amplified sound that can be heard outside your campsite, above fifty decibels, between 10 p.m. and 6 a.m. A generator kept quiet enough that neighboring sites can't hear it above that threshold isn't a violation.
Does the county's generator quiet-hours rule apply to my house, not just campgrounds?
No. Section 18.04.250 is written into Title 18, Parks and Recreation, and applies within county-owned or operated recreation areas and campgrounds. This local file doesn't show a separate county-wide ordinance limiting generator noise on private residential property outside park land.
What's the penalty for violating quiet hours at a county park?
Section 18.06.190 treats a violation of park rules and regulations, including the quiet-hours limit, as an infraction under Sections 1.36.010 and 1.36.020, unless another law provides otherwise. Repeated or serious violations can also lead to being ordered out of the recreation area for up to twelve months.

Sources & Official References

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