Agency-listedUSFSFee

Spillway C.G. (Letts Lake)

Drive-up · U.S. Forest Service · CA · 39.30880, -122.71680
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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.
USGS topo — contours & terrain
USGS topographic map of Spillway C.G. (Letts Lake)
Aerial — USGS / NAIP
Aerial image of Spillway C.G. (Letts Lake)
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Weather outlook — at Spillway C.G. (Letts Lake)
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Live NWS area forecast (~2.5 km grid, not elevation-corrected). Camp sits at 4,546 ft.
Fire & smoke — around Spillway 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 Spillway C.G. (Letts Lake) · Mendocino National Forest · CA

15 MI30 MI60 MIYOUR CAMPN ↑Water spigot · Water · 0 miWDump · 21 miD7-Eleven · Propane · 54 miPStonyford General Store · Fuel · 10 miFGrocery · 14 miGCVS Pharmacy · Pharmacy · 21 miRxMendo Mill · Hardware · 26 miHJW Automotive · Mechanic · 21 miMLaunderland · Laundry · 25 miLShower · 21 miShAir-up · 28 miAAdventist Health Clear Lake Medical Office - Clearlake, Live Well Program · Urgent care · 25 mi+Fastop · Outfitter · 23 miOStonyford Post Office · Mail · 10 mi@Upper Lake, CA - Tesla Supercharger · EV fast charger · 15 miEV
Straight-line miles · bearings approx · roads run longer
Nearest of each
  • WWater0 mi
  • FFuel10 mi
  • @Mail10 mi
  • GGrocery14 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 — Spillway C.G. (Letts Lake)

Access
Drive-up
Land
U.S. Forest Service
Elevation
4,546 ft
State
CA
Coordinates
39.30880, -122.71680
Cost
Fee

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

  • Nearest townStonyford · ~10.2 mi
  • Drinking waterWater spigot · ~0.0 mi
  • FuelStonyford General Store · ~10.3 mi
  • Propane / LPGnone within 31 mi
  • Dump station~20.7 mi
  • GroceriesUpper Lake Grocery · ~14.5 mi
  • PharmacyCVS Pharmacy · ~21.1 mi
  • Hospital / clinicAdventist Health Clear Lake Medical Office - Clearlake, Live Well Program · ~25.2 mi
  • HardwareMendo Mill · ~25.5 mi

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

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

Open Spillway C.G. (Letts Lake) elsewhere

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

If this one is full, gated or washed out.

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

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

How we know this — Spillway 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 2026-08-20: $12 per night, single site, May to September (Memorial Day-Labor Day); $6 per night off-season. Spillway is one of the four loops of Letts Lake Campground (Main Letts, Saddle Camp, Spillway, Stirrup), which is why the fee is published on the Letts Lake page. Source: https://www.fs.usda.gov/r05/mendocino/recreation/letts-lake-campground.
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 Spillway 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 — Spillway C.G. (Letts Lake)

Been here? Tell us what changed. This page is built from public records, so the fastest way it gets better is somebody who has actually pulled in. Road washed out, site gone, gate locked, or it is exactly as described — all of it useful. Send a report →