Trigo Mountain Wilderness
You're practically in another state in Trigo Mountains Wilderness; the Golden State to be precise. Only a thin strip of Imperial National Wildlife Refuge along the lower Colorado River separates this Wilderness from California. The Yuma Military Proving Ground lies to the east. A road divides the area into northern and southern sections. Here, you'll find 14 miles of the Trigo Mountain ridgeline cut by Red Cloud Wash in the south, Clip Wash in the center, and Hart Mine Wash in the north. Elevations range from about 300 to 1,700 feet. Year-round temperatures range from the low 50s to mid-90s and less than 5 inches of rain falls, annually. Numerous washes further dissect the area's sawtoothed ridges.
Description from Wilderness Connect (wilderness.net).
| Designation | Wilderness |
| Managed by | Bureau of Land Management |
| State | Arizona |
| Size | 30,300 acres |
| Designated | 1990, by Congress |
| Center point | 33.18° N, 114.62° W |
| Night sky | Very dark ground, a faint glow at most (Black Marble reading 27) |
Boundary map
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
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
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.
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Reference
Questions people ask
How big is Trigo Mountain Wilderness?
30,300 acres.
Source: Wilderness Connect
Who manages Trigo Mountain Wilderness?
The Bureau of Land Management.
Source: Wilderness Connect
What state is Trigo Mountain Wilderness in?
Arizona.
Source: Wilderness Connect
When was Trigo Mountain Wilderness designated?
Congress designated it in 1990.
Source: Wilderness Connect
How do I get to Trigo Mountain Wilderness?
A point inside the boundary is at 33.181° N, 114.622° 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.