Berryessa Snow Mountain National Monument
Berryessa Snow Mountain National Monument is a national monument of the United States comprising 344,476 acres (139,404 ha) of the California Coast Ranges in Napa, Yolo, Solano, Lake, Colusa, Glenn and Mendocino counties in northern California. Cache Creek Wilderness is located within the monument.
From Wikipedia, licensed CC BY-SA 4.0.
| Designation | National Monument |
| Managed by | Bureau of Land Management |
| State | California |
| Size | 421,086 acres (computed from the boundary polygon) |
| National Conservation Lands id | NLCS000318 |
| Center point | 39.1316, -122.6022 |
| Night sky | About as dark as the ground gets (Black Marble reading 15) |
Boundary map
Boundary, simplified to about 0.005 degrees Federal campground
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 sits inside the boundary. 21 are within ten miles of it. Nearest first. Distances are from the campground point to the boundary edge, from the Campsite Atlas index.
Show 3 moreHide
9 more within ten miles are not listed here.
Trails
71 named Forest Service trails start or end within 14.5 miles of the center point, 130 miles in all. The 10 longest are listed here.
| Trail | Miles | Allowed uses |
|---|---|---|
| Copper Smelter ↗ | 9.3 | |
| North Trough ↗ | 8.8 | |
| Love Lady ↗ | 7 | |
| Hornet Nest Grove ↗ | 6.7 | |
| Fence Line ↗ | 6.5 | |
| South Trough ↗ | 6.2 | |
| Auk Auk/Trough ↗ | 6 | |
| Miner Ridge ↗ | 5.5 | |
| Lady Bug ↗ | 5.5 | |
| Sullivan ↗ | 5.1 |
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. The radius is the one a circle of this unit’s acreage would have, measured from the center point, so a trail listed here can fall outside the boundary.
Fire nearby
- WildfireLucas
23 mi from the center point · 1,099 acres
- WildfireLucas
23 mi from the center point · 4,128 acres · 67% contained
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
- 0.9 miRumsey Town Hall ↗Rumsey, CA
- 1.9 miMaxwell Creek Bridge on Hardin Road ↗Locoallomi, CA
- 2 miPleasants Ranch ↗Vacaville, CA
- 3.1 miNichelini Winery ↗St. Helena, CA
- 5.3 miCanon School ↗Brooks, CA
- 6.1 miMain Street Historic District-- Winters ↗Winters, CA
- 7.5 miLakeport Carnegie Library ↗Lakeport, CA
- 7.6 miSwartz Creek Bridge on Aetna Springs Road ↗Aetna Springs, CA
Landmarks are listed first, then by distance from the boundary.
Reference
Questions people ask
How big is Berryessa Snow Mountain National Monument?
421,086 acres, measured from the published boundary polygon. The agency’s own figure can differ where the boundary includes water or inholdings.
Source: How acreage is computed
Who manages Berryessa Snow Mountain National Monument?
The Bureau of Land Management.
Source: Bureau of Land Management
What state is Berryessa Snow Mountain National Monument in?
California.
Source: How states are assigned
Can I camp at Berryessa Snow Mountain National Monument?
No federal campground sits inside the boundary. The nearest is Dixie Glade Campground, 0.2 miles out. 21 in all are within ten miles. Rules vary by unit; the BLM page has the current camping rules.
Source: Where to camp
How do I get to Berryessa Snow Mountain National Monument?
A point inside the boundary is at 39.132, -122.602. Port Chicago Naval Magazine National Memorial is 28 miles away. The official page carries directions and the office address.
Source: Bureau of Land Management
Is there a fire near Berryessa Snow Mountain National Monument right now?
2 active incidents within 50 miles as of 2026-09-18, the nearest Lucas at 23 miles. Distance is to the reported incident point, not the fire edge.
Source: Fire nearby
How dark is the night sky at Berryessa Snow Mountain National Monument?
NASA’s Black Marble night-lights image reads 15 on a 0 to 255 scale at the center point, about as dark as the ground gets.
Source: NASA Black Marble
Which national parks are near Berryessa Snow Mountain National Monument?
Port Chicago Naval Magazine National Memorial (28 mi). Park Atlas has fees, hours and alerts for each.
Source: Nearby on the other atlases
Are there historic places near Berryessa Snow Mountain National Monument?
81 National Register listings within 15 miles, including Rumsey Town Hall and Maxwell Creek Bridge on Hardin Road.
Source: Register Atlas
Sources
- Boundary, name: the BLM National Conservation Lands layer.
- States: computed by intersecting the boundary with Census state polygons; a state is listed when it holds at least one percent of the area.
- Acreage: geodesic area of the published polygon. The agency’s official acreage can differ where the boundary includes water, easements or inholdings.
- Description: Berryessa Snow Mountain National Monument 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.
- Trails: the Trailhead Atlas open-data file of Forest Service trails, matched by trail endpoints falling inside a circle of this unit’s acreage around the center point.
- 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.