USFS · California

Shasta-Trinity National Forest

The Shasta–Trinity National Forest is a federally designated forest in northern California, United States. It is the largest National Forest in California and is managed by the U.S. Forest Service. The 3,454-square-mile (8,945.5-square-kilometer) forest encompasses five wilderness areas, hundreds of mountain lakes and 6,278 miles (10,103 km) of streams and rivers. Major features include Shasta Lake, the largest man-made lake in California and Mount Shasta, elevation 14,179 feet (4,322 m).

From Wikipedia, licensed CC BY-SA 4.0.

National Forest2.7 million acresUSFSCA89 campgrounds within 10 mi126 Forest Service sites362 trails
Official page at U.S. Forest Service ↗
4 fires
active
Five-6 Understory Rx (prescribed burn) · 18 mi from the center
3 more within 50 miles
Incident details ↓

Facts

Where each comes from ↓
DesignationNational Forest
Managed byU.S. Forest Service
StateCalifornia
Size2.7 million acres
Forest Service code0514, region 05
Center point40.92° N, 122.65° W
Night skyAbout as dark as the ground gets (Black Marble reading 10)

Boundary map

1 outline

Boundary, simplified to about 0.005 degrees Federal campground Forest Service recreation site

The outline is the agency boundary simplified for display, so small parcels and inholdings may not show. The agency page has the authoritative map.

Weather by month

NOAA climate normals →
Weather by month near Shasta-Trinity National Forest40°50°60°70°80°January: 5.95 inches of precipitation, 1.2 inches of snowFebruary: 4.71 inches of precipitation, 1.6 inches of snowMarch: 4.07 inches of precipitation, 0.3 inches of snowApril: 2.57 inches of precipitation, 0.0 inches of snowMay: 1.69 inches of precipitation, 0.0 inches of snowJune: 0.86 inches of precipitation, 0.0 inches of snowJuly: 0.19 inches of precipitation, 0.0 inches of snowAugust: 0.14 inches of precipitation, 0.0 inches of snowSeptember: 0.33 inches of precipitation, 0.0 inches of snowOctober: 1.94 inches of precipitation, 0.0 inches of snowNovember: 3.50 inches of precipitation, 0.6 inches of snowDecember: 6.45 inches of precipitation, 2.7 inches of snowJanFebMarAprMayJunJulAugSepOctNovDecJanuary: 41.4°F averageFebruary: 44.5°F averageMarch: 48.4°F averageApril: 52.7°F averageMay: 60.6°F averageJune: 67.6°F averageJuly: 74.8°F averageAugust: 73.1°F averageSeptember: 67.2°F averageOctober: 57.1°F averageNovember: 47.0°F averageDecember: 40.2°F average0 in2 in4 in6 in8 inTemp °FInches
The line is the average temperature and the bars are average precipitation at Trinity Rvr Hatchery, 15 miles from the center point at 1,861 feet, station USC00049026 in the NOAA monthly climate normals for 1991 to 2020. Precipitation totals about 32 inches a year. The dotted line is average snowfall, about 6 inches a year on the same inches scale.

Large units span more than one climate. The station stands in for the center point, and the outer parts of the boundary can be warmer or colder.

Where to camp

Campsite Atlas →

63 federal campgrounds sit inside the boundary and 26 more are within ten miles of it. Nearest first. Distances are from the campground point to the boundary edge, from the Campsite Atlas index.

FS · Inside
Ackerman Campground
Reservable52 sites
FS · Inside
Ahdina Campground
First-come16 sites
FS · Inside
Algoma Campground
First-come8 sites
FS · Inside
Alpine View Campground
Reservable55 sites
FS · Inside
Antlers
Reservable60 sites
FS · Inside
Bailey Cove
Reservable9 sites
FS · Inside
Basin Gulch Campground
First-comeCA
FS · Inside
Beehive Dispersed Area
First-come44 sites
Show 4 more

77 more within ten miles are not listed here.

Trailheads and sites

Forest Service directory · 126

The Forest Service lists 126 recreation sites in this forest, among them 62 campgrounds, 17 picnic areas, 16 boat launchs, 13 group camps. Each links to its page on fs.usda.gov, which carries the season, fees and current status.

Show all 60

The 60 closest to the center point are listed; 66 more are on the Forest Service site.

Distance is from the center point of the boundary, not from a road or town.

Trails

Every trail on Trailhead Atlas →

The Forest Service trail layer records 362 named trails in this forest, 1,207 miles in all. The 10 longest are listed here.

TrailMiles
PCT: Shasta-Trinity ↗143.7
Pilgrim - Harris ↗27.2
Salmon Summit ↗22.2
Green Mountain ↗20
Curl Ridge Jeep Trail ↗19.4
McKenzie ↗17.2
Upper McCloud River ↗16.8
North Fork ↗16.6
South Fork Trinity River Trail ↗16
Humboldt ↗14.5

Lengths and allowed uses come from the Forest Service trail layer by way of Trailhead Atlas. This trail list was copied from Trailhead Atlas on November 1, 2026 and is copied again on each weekly run. Trails in plain text have no page there yet.

All 362 trails in Shasta-Trinity National Forest on Trailhead Atlas ↗

Fire nearby

Within 50 miles · as of 2026-11-01
  • Prescribed
    Five-6 Understory Rx

    18 mi from the center point

  • Prescribed
    Ew 10 Rx

    18 mi from the center point

  • Prescribed
    Lower Gas Point Vmp Rx

    36 mi from the center point · 254 acres

  • Prescribed
    Hayfork Watershed Rx

    36 mi from the center point

Distance is to the reported incident point, not the fire edge, and is measured from the center of a boundary that may be many miles across. Check the agency page for closures.

Explore

Nearby on the other atlases

National Park System units within 30 miles · Park Atlas
National Recreation Area · 8 mi
Whiskeytown National Recreation Area
National Monument · 14 mi
Lava Beds National Monument
National Monument · 26 mi
Tule Lake National Monument
National Register listings within 15 miles · 15 in all · Register Atlas

Landmarks are listed first, then by distance from the boundary.

Guidebooks for California

We earn a small commission if you buy through these links. It does not change what we list.

  • Walkabout Northern California
    Tom Courtney, 2019
    Find at Bookshop.org
  • Backpacking California
    Wilderness Press, 2019
    Find at Bookshop.org
  • Coastal trails of Southern California
    Linda B. Mullally, 2018
    Find at Bookshop.org
  • Hiking northern California
    Bubba Suess, 2017
    Find at Bookshop.org
  • Hiking the Pacific Crest Trail: Southern California
    Shawnte Salabert, 2017
    Find at Bookshop.org

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

Reference

Questions people ask

How big is Shasta-Trinity National Forest?

2.7 million acres.

Source: Forest Service boundary data

Who manages Shasta-Trinity National Forest?

The U.S. Forest Service.

Source: U.S. Forest Service

What state is Shasta-Trinity National Forest in?

California.

Source: How states are assigned

Can I camp at Shasta-Trinity National Forest?

Dispersed camping is allowed on most national forest land outside developed sites. Check the forest page for closures. The federal campgrounds within ten miles are listed under Where to camp.

Source: Where to camp

How do I get to Shasta-Trinity National Forest?

A point inside the boundary is at 40.921° N, 122.650° W. Whiskeytown National Recreation Area is 8 miles away. The official page carries directions and the office address.

Source: U.S. Forest Service

Is there a fire near Shasta-Trinity National Forest right now?

4 active incidents within 50 miles as of 2026-11-01, the nearest Five-6 Understory Rx at 18 miles. Distance is to the reported incident point, not the fire edge.

Source: Fire nearby

Which national parks are near Shasta-Trinity National Forest?

Whiskeytown National Recreation Area (8 mi), Lava Beds National Monument (14 mi) and Tule Lake National Monument (26 mi). Park Atlas has fees, hours and alerts for each.

Source: Nearby on the other atlases

Are there historic places near Shasta-Trinity National Forest?

The National Register has 15 listings within 15 miles, including Bowerman Barn and Dunsmuir Historic Commercial District.

Source: Register Atlas

Sources

  • Boundary, name, acreage and code: the Forest Service Enterprise Data Warehouse.
  • States and territories: computed by intersecting the boundary with Census state polygons and coarse outlines of the territories and outlying islands. A place is listed when it holds at least one percent of the area. A boundary that touches no outline is listed under the nearest one.
  • Description: Shasta–Trinity National Forest on Wikipedia, CC BY-SA 4.0. The article was accepted because its title contains this unit’s name.
  • Campgrounds: the Campsite Atlas index of federal campgrounds, matched to this boundary at build time.
  • Trailheads and sites: the Forest Service Recreation Opportunities layer, matched by forest code.
  • Trails: the Trailhead Atlas open-data file of Forest Service trails, matched by forest code.
  • Night sky: NASA Black Marble (VIIRS, 2016 composite) sampled at zoom 6 around the center point.
  • Weather, alerts, air quality, river flow and earthquakes load live in your browser from NWS, AirNow, USGS and iNaturalist when you open the page.