BLM · California

Grass Valley Wilderness

The expansive Grass Valley covers nearly three-fourths of this Wilderness and ranks as its primary topographical feature. The area lies fairly flat, with a series of scattered hills, yellow to reddish brown in color, with elevations from 200 feet to 600 feet above the desert floor to the west. You'll find a few Joshua trees, but the vegetation is dominated by a creosote bush scrub community. Raptors forage here, and desert tortoises and Mojave ground squirrels find suitable habitat in this barren area, which is devoid of both water and trails. The non-wilderness corridor of an old road divides the Wilderness into eastern and western halves, and the China Lake Naval Weapons Center shares the eastern border.

Description from Wilderness Connect (wilderness.net).

Official page at Wilderness Connect ↗
Grass Valley Wilderness
Photo from Wilderness Connect, wilderness.net
DesignationWilderness
Managed byBureau of Land Management
StateCalifornia
Size30,186 acres
Designated1994, by Congress
Center point35.29° N, 117.33° W
Night skyVery dark ground, a faint glow at most (Black Marble reading 31)

Boundary map

1 outline

Boundary, simplified to about 0.005 degrees

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 Grass Valley Wilderness40°50°60°70°80°90°January: 1.38 inches of precipitation, 0.4 inches of snowFebruary: 1.56 inches of precipitation, 0.3 inches of snowMarch: 0.98 inches of precipitation, 0.6 inches of snowApril: 0.38 inches of precipitation, 0.0 inches of snowMay: 0.14 inches of precipitation, 0.0 inches of snowJune: 0.03 inches of precipitation, 0.0 inches of snowJuly: 0.23 inches of precipitation, 0.0 inches of snowAugust: 0.19 inches of precipitation, 0.0 inches of snowSeptember: 0.19 inches of precipitation, 0.0 inches of snowOctober: 0.47 inches of precipitation, 0.0 inches of snowNovember: 0.47 inches of precipitation, 0.1 inches of snowDecember: 0.69 inches of precipitation, 0.8 inches of snowJanFebMarAprMayJunJulAugSepOctNovDecJanuary: 46.6°F averageFebruary: 49.3°F averageMarch: 54.4°F averageApril: 60.6°F averageMay: 69.1°F averageJune: 78.6°F averageJuly: 84.7°F averageAugust: 83.8°F averageSeptember: 77.0°F averageOctober: 66.1°F averageNovember: 54.4°F averageDecember: 45.8°F average0 in0.5 in1 in1.5 in2 inTemp °FInches
The line is the average temperature and the bars are average precipitation at Randsburg, 19 miles from the center point at 3,570 feet, station USC00047253 in the NOAA monthly climate normals for 1991 to 2020. Precipitation totals about 7 inches a year. The dotted line is average snowfall, about 2 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 →

No federal campground is within ten miles of the boundary in the Campsite Atlas index. Camping inside a wilderness is usually allowed away from trails and water, with no facilities; the managing agency page has the permit and group-size rules.

Explore

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 Grass Valley Wilderness?

30,186 acres.

Source: Wilderness Connect

Who manages Grass Valley Wilderness?

The Bureau of Land Management.

Source: Wilderness Connect

What state is Grass Valley Wilderness in?

California.

Source: Wilderness Connect

When was Grass Valley Wilderness designated?

Congress designated it in 1994.

Source: Wilderness Connect

How do I get to Grass Valley Wilderness?

A point inside the boundary is at 35.292° N, 117.327° W. The official page carries directions and the office address.

Source: Wilderness Connect

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.
  • 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.