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Recreation Region: Stonyford Recreation Area

Mill Valley Campground

Mill Valley Campground has 15 campsites, equipped with picnic tables and fire rings. 

The campground is one mile north of Letts Lake. There is an OHV trail leading in and out of the campground.

Current Conditions
Water is OFF for the season.
Please be advised access to the Letts Lake basin may be limited due to the M10 Road construction project. Please check forest alerts for M10 road updates.
Trash services provided only during summer months. During winter, there are no trash services provided; please pack out garbage.

Active Alerts

General Information

This location is available on a first-come, first-served basis only. Visitors are required to physically arrive at the campground to purchase and claim a site.

Check in: 2:00 p.m.; Check-out: 11:00 a.m.; Quiet hours are 10:00 p.m. until 6:00 a.m.

Two vehicles allowed per site, medium sized trailers.

Overnight Use:
Single Site: $10 per night

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

Another Way to Pay:

Once on-site, you are able to pay for your campsite(s) by scanning the QR code on the campground kiosk using the Recreation.gov mobile app, and the Scan and Pay feature.

In order to utilize Scan & Pay on site, you will need to first download the free Recreation.gov mobile app https://www.recreation.gov/mobile-app prior to your arrival as some remote areas have limited or no cellular service.

Stonyford Work Center sign

Address: 5171 Stonyford-Elk Creek Rd Stonyford, CA 95979
Phone: 530-963-3128
Hours: 8:30 am - noon and 1:00 - 4:00 pm, Tuesday - Saturday. Closed Sunday - Monday. (Closed on federal holidays)
Office Email: sm.fs.mendopao@usda.gov

Getting There

Latitude / Longitude

Latitude: 39.317702

Longitude: -122.707705

Directions

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

Lat - 39° 19' 6.024", Long - 122° 42' 22.2084"

Parking

Limited outside of campsites.

Facility and Amenity Information

Restrooms

Restrooms are available at this site.

Water

Potable water is not available at this site.

Picnic Tables

Picnic tables are available at this site.

Recreation Opportunities

Off-Highway Vehicles (OHV) Off-Highway Vehicles (OHV)

OHV CampingOHV Camping

Last updated September 23, 2025