USFWS · California

Hopper Mountain National Wildlife Refuge

Hopper Mountain National Wildlife Refuge is located in the Topatopa Mountains of Ventura County, in southern California. It is bordered by the Los Padres National Forest and the Sespe Condor Sanctuary to the north. The 2,471-acre (10.00 km2) refuge was established in 1974 to protect the endangered California condor, its habitat, and other wildlife resources.

From Wikipedia, licensed CC BY-SA 4.0.

National Wildlife Refuge2,335 acresUSFWSCA
Official page at U.S. Fish and Wildlife Service ↗
Hopper Mountain National Wildlife Refuge
Photo by Jon Myatt/USFWS, licensed CC BY 2.0, from Wikimedia Commons.

Facts

Where each comes from ↓
DesignationNational Wildlife Refuge
Managed byU.S. Fish and Wildlife Service
StateCalifornia
Size2,335 acres
FWS regionRegion 8
Center point34.46° N, 118.85° W
Night skyVery dark ground, a faint glow at most (Black Marble reading 26)

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 Hopper Mountain National Wildlife Refuge50°60°70°80°January: 4.23 inches of precipitationFebruary: 4.41 inches of precipitationMarch: 2.90 inches of precipitationApril: 0.83 inches of precipitationMay: 0.30 inches of precipitationJune: 0.02 inches of precipitationJuly: 0.00 inches of precipitationAugust: 0.00 inches of precipitationSeptember: 0.11 inches of precipitationOctober: 0.52 inches of precipitationNovember: 0.82 inches of precipitationDecember: 2.62 inches of precipitationJanFebMarAprMayJunJulAugSepOctNovDecJanuary: 54.9°F averageFebruary: 54.7°F averageMarch: 58.7°F averageApril: 61.4°F averageMay: 67.1°F averageJune: 72.0°F averageJuly: 78.7°F averageAugust: 79.9°F averageSeptember: 76.6°F averageOctober: 68.7°F averageNovember: 60.2°F averageDecember: 53.4°F average0 in1 in2 in3 in4 in5 inTemp °FInches
The line is the average temperature and the bars are average precipitation at Newhall 5Nw, 15 miles from the center point at 1,765 feet, station USC00046161 in the NOAA monthly climate normals for 1991 to 2020. Precipitation totals about 17 inches a year.

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.

Explore

Nearby on the other atlases

National Park System units within 30 miles · Park Atlas
National Recreation Area · 24 mi
Santa Monica Mountains National Recreation Area
National Register listings within 15 miles · 7 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.

  • Moon Southern California Road Trips
    Ian Anderson, 2020
    Find at Bookshop.org
  • Walkabout Northern California
    Tom Courtney, 2019
    Find at Bookshop.org
  • Backpacking California
    Wilderness Press, 2019
    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 Hopper Mountain National Wildlife Refuge?

2,335 acres.

Source: How acreage is computed

Who manages Hopper Mountain National Wildlife Refuge?

The U.S. Fish and Wildlife Service.

Source: U.S. Fish and Wildlife Service

What state is Hopper Mountain National Wildlife Refuge in?

California.

Source: How states are assigned

How do I get to Hopper Mountain National Wildlife Refuge?

A point inside the boundary is at 34.456° N, 118.854° W. Santa Monica Mountains National Recreation Area is 24 miles away. The official page carries directions and the office address.

Source: U.S. Fish and Wildlife Service

Which national parks are near Hopper Mountain National Wildlife Refuge?

Santa Monica Mountains National Recreation Area (24 mi). Park Atlas has fees, hours and alerts for each.

Source: Nearby on the other atlases

Are there historic places near Hopper Mountain National Wildlife Refuge?

The National Register has 7 listings within 15 miles, including Bardsdale Methodist Episcopal Church and Colony House.

Source: Register Atlas

Sources

  • Boundary, name: the U.S. Fish and Wildlife Service refuge boundary layer.
  • 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.
  • Acreage: geodesic area of the published polygon. The agency’s official acreage can differ where the boundary includes water, easements or inholdings.
  • Photograph: the image Wikidata records for this refuge (Q5901217), the item linked to its Wikipedia article. Author and license come from the file page on Wikimedia Commons.
  • Description: Hopper Mountain National Wildlife Refuge 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.
  • 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.