BLM · USFS · California

Yolla Bolly-Middle Eel Wilderness

Located between the North and South Yolla Bolly Mountains in the as-rugged-as-it-comes headwater country of the Wild and Scenic Middle Fork of the Eel River, Yolla Bolly-Middle Eel Wilderness ranges in...

Description from Wilderness Connect (wilderness.net), where the full text continues.

Official page at Wilderness Connect ↗
Yolla Bolly-Middle Eel Wilderness
Photo from Wilderness Connect, wilderness.net
DesignationWilderness
Managed byBureau of Land Management and U.S. Forest Service
StateCalifornia
Size182,298 acres (Wilderness Connect)
Designated1964, by Congress
Center point40.0529, -123.0268
Night skyAbout as dark as the ground gets (Black Marble reading 13)

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 Yolla Bolly-Middle Eel Wilderness40°50°60°70°80°January: 7.82 inches of precipitation, 0.7 inches of snowFebruary: 6.76 inches of precipitation, 1.4 inches of snowMarch: 5.19 inches of precipitation, 0.2 inches of snowApril: 2.81 inches of precipitation, 0.2 inches of snowMay: 1.64 inches of precipitation, 0.0 inches of snowJune: 0.76 inches of precipitation, 0.0 inches of snowJuly: 0.03 inches of precipitation, 0.0 inches of snowAugust: 0.16 inches of precipitation, 0.0 inches of snowSeptember: 0.20 inches of precipitation, 0.0 inches of snowOctober: 2.00 inches of precipitation, 0.0 inches of snowNovember: 4.28 inches of precipitation, 0.2 inches of snowDecember: 8.79 inches of precipitation, 0.6 inches of snowJanFebMarAprMayJunJulAugSepOctNovDecJanuary: 42.5°F averageFebruary: 45.3°F averageMarch: 49.0°F averageApril: 52.7°F averageMay: 59.2°F averageJune: 65.5°F averageJuly: 72.5°F averageAugust: 71.1°F averageSeptember: 66.4°F averageOctober: 57.2°F averageNovember: 46.8°F averageDecember: 41.2°F average0 in2 in4 in6 in8 in10 inTemp °FInches
The line is the average temperature and the bars are average precipitation at Covelo, 20 miles from the center point at 1,413 feet, station USC00042081 in the NOAA monthly climate normals for 1991 to 2020. Precipitation totals about 40 inches a year. The dotted line is average snowfall, about 3 inches a year on the same inches scale. The station sits about 4,600 feet lower than the center point, so temperatures on the ground run cooler.

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 →

No federal campground sits inside the boundary. 7 are within ten miles of it. Nearest first. Distances are from the campground point to the boundary edge, from the Campsite Atlas index.

Trailheads and sites

Forest Service directory · 1

The Forest Service lists 1 recreation site inside this wilderness, among them 1 trailhead. Each links to its page on fs.usda.gov, which carries the season, fees and current status.

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

66 named Forest Service trails enter this wilderness, 298 miles in all. The 10 longest are listed here.

TrailMiles
Summit17
Humboldt14.5
Willow Creek13
Chicago Camp12.8
River11.3
South Fork Cottonwood Creek11.2
Ides Cove Loop10.7
Cottonwood10.6
Hell Hole Canyon10.4
Buck Ridge9.3

Lengths and allowed uses come from the Forest Service trail layer by way of Trailhead Atlas, refreshed September 18, 2026. Trails in plain text have no page there yet.

Explore

Nearby on the other atlases

National Register listings within 15 miles · 1 in all · Register Atlas

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

Reference

Questions people ask

How big is Yolla Bolly-Middle Eel Wilderness?

182,298 acres.

Source: Wilderness Connect

Who manages Yolla Bolly-Middle Eel Wilderness?

Bureau of Land Management and U.S. Forest Service share management. The Bureau of Land Management portion is the largest in the wilderness record.

Source: Wilderness Connect

What state is Yolla Bolly-Middle Eel Wilderness in?

California.

Source: Wilderness Connect

When was Yolla Bolly-Middle Eel Wilderness designated?

Congress designated it in 1964.

Source: Wilderness Connect

Can I camp at Yolla Bolly-Middle Eel Wilderness?

No federal campground sits inside the boundary. The nearest is Hammerhorn Campground, 0.1 miles out. 7 in all are within ten miles. Camping inside a wilderness is usually allowed away from roads, with no facilities; the managing agency page has the permit rules.

Source: Where to camp

Where are the trailheads in Yolla Bolly-Middle Eel Wilderness?

The Forest Service lists 1 recreation site here, including 1 trailhead. Each one links to its Forest Service page.

Source: Trailheads and sites

How do I get to Yolla Bolly-Middle Eel Wilderness?

A point inside the boundary is at 40.053, -123.027. The official page carries directions and the office address.

Source: Wilderness Connect

How dark is the night sky at Yolla Bolly-Middle Eel Wilderness?

NASA’s Black Marble night-lights image reads 13 on a 0 to 255 scale at the center point, about as dark as the ground gets.

Source: NASA Black Marble

Are there historic places near Yolla Bolly-Middle Eel Wilderness?

1 National Register listing within 15 miles, including Round Valley Flour Mills.

Source: Register Atlas

Sources

  • Boundary, name, acreage, designation year, states and description: Wilderness Connect.
  • Campgrounds: the Campsite Atlas index of federal campgrounds, matched to this boundary at build time.
  • Trailheads and sites: the Forest Service Recreation Opportunities layer, points inside the boundary.
  • Trails: the Trailhead Atlas open-data file of Forest Service trails, matched on the wilderness each trail enters.
  • 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.