BLM has no nationwide quiet hours. The federal rule says 'unreasonable noise'

There is no BLM quiet hours rule that applies across public land. The federal regulation covering noise, 43 CFR 8365.1-4, prohibits “making unreasonable noise” and never names an hour. If you want a number, it comes from the specific site you are camped at, and a lot of sites do not publish one.

What the federal rule actually says

Subpart 8365 is the BLM’s rules of conduct. Section 8365.1-4(a) opens with “No person shall cause a public disturbance or create a risk to other persons on public lands by engaging in activities which include, but are not limited to, the following,” and the first two items are “Making unreasonable noise” and “Creating a hazard or nuisance” (43 CFR 8365.1-4 via Cornell LII, checked 2026-08-14).

Two things follow from that wording. It is a standard, not a schedule: a generator at 2 p.m. with nobody within half a mile is not the same act as the same generator at 2 a.m. next to another camp. And “include, but are not limited to” means the list is open, so an officer is not confined to the six items written down.

The third item on the list matters more than most campers expect. Refusing to disperse “when directed to do so by an authorized officer” is prohibited by the same section. In practice, the ranger’s instruction is the enforceable moment, whatever the clock says.

The BLM’s national camping page carries the 14-days-in-28 stay limit, the 10-day unattended property rule, and the requirement to stay on designated roads. We read it on 2026-08-14. It says nothing about quiet hours or generators.

Where the numbers do live

At the recreation site, and they are not uniform. Two BLM pages we read on 2026-08-14:

• Cove at CJ Strike Reservoir, Idaho: “Quiet hours are established from 10:00 p.m. to 6:00 a.m. No loud talking, loud music, barking dogs, operation of generators, or other disturbing activities are permitted.” The same page caps stays at 14 consecutive days.
• Lower Deschutes River, Oregon: “Quiet hours are from 10:00 p.m. to 7:00 a.m. Generators, amplified music and other excessive or loud noise is prohibited within this time frame.”

One agency, one hour apart on the morning end. There is also a route for local rules to become enforceable across a wider area: 43 CFR 8365.1-6 says a state director “may establish such supplementary rules as he/she deems necessary.”

The honest part

We are not going to publish a generic BLM generator window, because there is no such thing to publish. For dispersed camping away from a developed site we found no posted hours at all, and that gap is not permission. The standard is still unreasonable noise, judged on the spot by whoever shows up.

What that leaves is manners with legal teeth behind them. The 10 p.m. to 6 a.m. window the BLM writes into its own campgrounds is the best available read on what the agency itself considers reasonable, and a generator running at midnight within earshot of another camp is the case that makes itself.

Before you count on it

Look the site up on blm.gov/visit and read its page, because that is where a number gets published if one exists. If you cannot find one, read the board at the site, and treat the board and the ranger’s direction as the last word over any website, this one included. Our boondocking hub and the Idaho free camping page cover the stay-limit half of the same rules of conduct.