Agency-listedUSFSFeeRoad season: open (MVUM)

Stirrup C.G. (Letts Lake)

Drive-up · U.S. Forest Service · CA · 39.30970, -122.71322
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U.S. Forest Service lists this as a developed campground. Expect marked sites, a fee station or a reservation, and the usual campground rules. The dispersed-camping freedom of the surrounding forest does not apply inside it. What changes is conditions — roads, gates, closures, fire rules. Check those with the unit before you commit to the drive.
Nearest road on the Forest Service MVUM — Stirrup C.G. (Letts Lake) · Mendocino National Forest · CA

The nearest road on the Forest Service MVUM is FR 17N21C (Letts Recreation), 30 ft from the pin. The MVUM lists it as native material surface and maintenance level 3 – suitable for passenger cars.

Road season: open (MVUM) The MVUM lists FR 17N21C (Letts Recreation), 30 ft from the pin, open to passenger vehicles year-round.
MVUM record for FR 17N21C (Letts Recreation): “01/01-12/31” Read against the calendar on 2026-09-22; with JavaScript your browser re-checks it against today.

From the Forest Service's own Motor Vehicle Use Map roads layer (EDW, Clearinghouse refresh Aug 30, 2026), straight-line from the pin to the nearest mapped segment. The nearest segment is not necessarily the way in, a maintenance level is the agency's class and not a report on today, and a road's season is the road's — it is not a campground order. What the levels mean → What an MVUM is →

USGS topo — contours & terrain
USGS topographic map of Stirrup C.G. (Letts Lake)
Aerial — USGS / NAIP
Aerial image of Stirrup C.G. (Letts Lake)
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Weather outlook — at Stirrup C.G. (Letts Lake)
Loading the latest forecast…
Live NWS area forecast (~2.5 km grid, not elevation-corrected). Camp sits at 4,431 ft.
Fire & smoke — around Stirrup C.G. (Letts Lake)NIFC · AirNow
Checking active fires & air quality…
Active wildfires from NIFC (within ~50 mi); air quality from AirNow. Always confirm current fire restrictions with the managing office before you go.

Everything you need — measured from Stirrup C.G. (Letts Lake) · Mendocino National Forest · CA

▲ your camp. Rings are 15, 30 and 60 straight-line miles; bearings are approximate and roads run longer.
Nearest of each
  • WWater0 mi
  • FFuel10 mi
  • @Mail10 mi
  • GGrocery15 mi
  • EVEV fast charger15 mi
  • DDump21 mi
  • ShShower21 mi
  • RxPharmacy21 mi
  • MMechanic21 mi
  • OOutfitter23 mi
  • LLaundry25 mi
  • +Urgent care25 mi
  • HHardware26 mi
  • AAir-up28 mi
  • PPropane54 mi
≤30 mi30–4545+water

The read: water is basically at camp, fuel & food sit about 10 mi out.

One dot per need — the nearest of each kind, straight-line from camp. Places from OpenStreetMap (© OpenStreetMap contributors); the EV fast charger from the US DOE station locator. Open in Google Maps ↗

The site — Stirrup C.G. (Letts Lake)

Access
Drive-up
Land
U.S. Forest Service
Elevation
4,431 ft
Ground slope
7% · gentle
State
CA
Coordinates
39.30970, -122.71322
Cost
Fee

Nearby & resupply — around Stirrup C.G. (Letts Lake) · Mendocino National Forest · CA (OpenStreetMap)

  • Water featureUpper Letts Lake · ~0.1 mi · USGS: perennial lake or pond
  • Nearest townStonyford · ~10.0 mi
  • Rail & highwaynone mapped within 10 mi
  • Drinking waterWater · ~0.0 mi
  • FuelStonyford General Store · ~10.1 mi
  • Propane / LPGnone within 31 mi
  • Dump station~20.8 mi
  • GroceriesGrocery · ~14.7 mi
  • PharmacyCVS Pharmacy · ~21.3 mi
  • Hospital / clinicAdventist Health Clear Lake Medical Office - Clearlake, Live Well Program · ~25.2 mi
  • HardwareMendo Mill · ~25.5 mi

EV charging — from Stirrup C.G. (Letts Lake) · Mendocino National Forest · CA — nearest public DC fast & Level 2 (US DOE station data)

Nearby restrooms — around Stirrup C.G. (Letts Lake) · Mendocino National Forest · CA — pit toilets, restrooms & rest areas (government data)

Coming out here — Stirrup C.G. (Letts Lake) · Mendocino National Forest · CA

Open Stirrup C.G. (Letts Lake) elsewhere

Other camps near Stirrup C.G. (Letts Lake)

If this one is full, gated or washed out.

The unit that manages Stirrup C.G. (Letts Lake)

Stay limits, road closures and fire restrictions at Stirrup C.G. (Letts Lake) are set by Mendocino National Forest, not by the campsite — check there before you go.

How we know this — Stirrup C.G. (Letts Lake)

Source
U.S. Forest Service recreation data
Confidence
Likely — The record is good enough to put a pin on, but thin in places. Treat the details as a starting point, not gospel.
How it was placed
Developed FEE campground (not free) - review | auto:usfs-fee 2026-08-20: US Forest Service developed campground, agency coordinates, agency states a fee. No dollar amount in the agency record -- expect a charge and confirm the current rate before you go. Not field-verified. | Fee 2026-08-24: $12 per night, single site, May through September (Memorial Day to Labor Day), and $6 per night off-season. Stirrup is one of four loops of Letts Lake Campground -- the forest publishes the rate on the parent Letts Lake page, which names Main Letts, Saddle Camp, Spillway and Stirrup as its loops and prices all 42 sites together. That page's printed coordinate is 0.52 mi from our pin, which is the distance between loops, not a mismatch. Access to the Letts Lake basin may be limited by the M10 Road construction project. Source: https://www.fs.usda.gov/r05/mendocino/recreation/letts-lake-campground.
Nearest MVUM road
US Forest Service Motor Vehicle Use Map roads layer (EDW_MVUM_01, layer 1), Clearinghouse refresh Aug 30, 2026. Straight-line distance from the pin to the nearest mapped segment within 1 mi; surface type, maintenance level and open dates are the agency's own values for that segment, expanded from its codes and otherwise unedited. Nothing here says which road reaches the site.
EV chargers
US DOE Alternative Fuels Data Center station locator, snapshot 2026-09-16. Straight-line miles to the nearest public, open, unrestricted station; restricted and planned units are shown but never counted.
Field check
On the agency's books. The land manager inventoried this site, so its existence is not in question — current conditions are. Nobody from here has camped it recently.

What we don’t know about Stirrup C.G. (Letts Lake)

A land record can put you within a few meters of a spot. It cannot tell you any of this — so check it yourself, and treat anything below as the open question it is.

Before you go — Stirrup C.G. (Letts Lake)

Is this page wrong about Stirrup C.G. (Letts Lake)?

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What did you find? Tick anything that fits.

A reader report is not a fact, and this one will not change a word of this page by itself. Dave reads it and checks it against the agency’s own record, because that record is what this site says. If reader reports are ever shown here they are labelled “reader report, unverified” with the date, and they are never merged into the agency fields.