U.S. Forest Service · Mendocino National Forest · Stonyford, CA

Mill Valley Campground

Sites are first-come, first-served. Recreation.gov lists this campground for paying on site, and you may be able to pay with the Scan and Pay feature of its app.

More like this: first-come in California

Mill Valley Campground SignCampsite with Parking Space at Mill Valley CampgroundMill Valley Campground SignCampsite at Mill Valley Campground
Photos courtesy of USFS · Recreation.gov

Amenities & rules

Campground has 15 sites equipped with picnic tables and fire rings. Accomodates up tp 24 foot trailers. OHV trail leading in and out of campground. Trash service only avaliable during summer months.

Individual sites vary. Confirm on Recreation.gov or with the managing office.

Season & status

StatusOpen
SeasonMay
ForestMendocino National Forest
FeesMay - September (Memorial Day-Labor Day): $10/night Off-season: $5/night
RulesTwo vehicles allowed per site, medium sized trailers.

Mendocino National Forest recreation page ↗

Weather by month

NOAA climate normals →
Weather by month near Mill Valley Campground40°50°60°70°80°January: 4.98 inches of precipitation, 0.7 inches of snowFebruary: 4.49 inches of precipitation, 0.7 inches of snowMarch: 2.84 inches of precipitation, 0.0 inches of snowApril: 1.18 inches of precipitation, 0.0 inches of snowMay: 0.93 inches of precipitation, 0.0 inches of snowJune: 0.33 inches of precipitation, 0.0 inches of snowJuly: 0.02 inches of precipitation, 0.0 inches of snowAugust: 0.05 inches of precipitation, 0.0 inches of snowSeptember: 0.15 inches of precipitation, 0.0 inches of snowOctober: 0.87 inches of precipitation, 0.0 inches of snowNovember: 2.13 inches of precipitation, 0.0 inches of snowDecember: 3.79 inches of precipitation, 0.0 inches of snowJanFebMarAprMayJunJulAugSepOctNovDecJanuary: 44.4°F averageFebruary: 47.0°F averageMarch: 50.7°F averageApril: 55.2°F averageMay: 63.0°F averageJune: 70.9°F averageJuly: 77.0°F averageAugust: 75.1°F averageSeptember: 70.7°F averageOctober: 62.1°F averageNovember: 50.9°F averageDecember: 44.6°F average0 in1 in2 in3 in4 in5 inTemp °FInches
The line is the average temperature and the bars are average precipitation at East Park Rsvr, 10 miles from the campground at 1,205 feet, station USC00042640 in the NOAA monthly climate normals for 1991 to 2020. Precipitation totals about 22 inches a year. The dotted line is average snowfall, about 1 inch a year on the same inches scale.

Getting there

Located 17 miles west of Stonyford and one mile from Letts Lake off of the 17N02.

Nearest townStonyford, California
Coordinates39.3183° N, 122.7062° W · Directions ↗

Fire nearby

  • Prescribed
    Howard Forest Frp Rx

    33 mi from the campground · 13 acres

Distance is to the reported incident point, not the fire edge. Call the managing office before you drive.

Supplies & services

Dump stationDump station ↗21.5 mi
Outdoor gearClearlake Outdoors ↗23.8 mi
RV sales & serviceMike Friend RVs ↗54.2 mi

Locations © OpenStreetMap contributors. Call ahead; hours change seasonally.

Explore

Video

FREEDOM VALLEY CAMPGROUND, NEW LONDON | MILL CREEK CAMPGROUND, BERLIN CENTER

Worth a stop

Letts Lake and Big Springs Picnic Area are one mile south of the campground.

  • 0.2 mi
    Letts y Trail
    2.4 mi trail
  • 0.3 mi
    Potato Hill
    3.9 mi trail
  • 0.4 mi
    Pine Flat
    2.3 mi trail
  • 0.5 mi
    Steam Donkey
    3.8 mi trail
  • 0.6 mi
    Letts-Pine
    0.4 mi trail
  • 0.7 mi
    Steam Donkey Bypass
    2.1 mi trail

Trailheads within three miles

Trail and trailhead records are the Forest Service's. Distances are straight-line to the nearer trail end. Trail conditions are not tracked here.

Public land it sits in

On Wilderness Atlas →

This campground sits inside Berryessa Snow Mountain National Monument, which overlaps Mendocino National Forest.

Each unit is published as a centre point and an acreage rather than a boundary, so this section stands it in for a circle of the same area. Whether a campground is inside, and how far it is from one it is outside, are both approximate.

Natural features

General vegetation is mixed coniferous forest with chaparral surroundings.

Recreation

The Forest Service in cooperation with the State of California Off-Highway Vehicle Fund, (Green Sticker), has developed roads, trails, and facilities for further enjoyment of the OHV user. Remember, these are your facilities and OHV funds are being used to develop and maintain them. Forest Service roads open to Off-Highway Vehicles are considered public roads. All motorcycle riders on public lands in the State of California must wear a safety helmet meeting the standards adopted by the US Department of Transportation. State law requires all vehicles, including motorcycles to be registered. You must have a current Green or Red Sticker, or Highway License. Highway licensed vehicles must meet all standards for operating on a public highway and be operated in accordance with California state law. Your vehicle must be equipped with a properly installed Forest Service approved spark arrester in good working condition. For your safety and the safety of others, Off-Highway Vehicles must never be operated in a manner likely to endanger any person or property.

Guidebooks for California

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Titles come from Open Library's catalog, matched by subject heading or by title.

Reference

Questions people ask

Do I need a reservation at Mill Valley Campground?

No. Mill Valley Campground is first-come, first-served. Sites are taken on arrival and paid at the fee station.

Source: Forest Service

How much does it cost to camp at Mill Valley Campground?

May - September (Memorial Day-Labor Day): $10/night Off-season: $5/night

Source: Forest Service

Is Mill Valley Campground open right now?

Open as of Oct 16, 2026. Season May.

Source: Forest Service status

How many sites does Mill Valley Campground have?

15 sites.

Source: Forest Service

What is there to do at Mill Valley Campground?

The Forest Service in cooperation with the State of California Off-Highway Vehicle Fund, (Green Sticker), has developed roads, trails, and facilities for further enjoyment of the OHV user. The Recreation section on this page has the rest.

Source: Recreation

What is the nearest town to Mill Valley Campground?

Stonyford, California. Letts Lake and Big Springs Picnic Area are one mile south of the campground.

Source: Getting there

What if Mill Valley Campground is full?

The nearest public campgrounds are Letts Lake Campground (1.1 mi, first-come), Dixie Glade Campground (1.3 mi, first-come), and Mill Creek (3.8 mi, first-come).

Source: Campgrounds nearby