U.S. Fish & Wildlife Service logo A Unit of the National Wildlife Refuge System
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Hopper Mountain
National Wildlife Refuge

About 6 miles north of Fillmore, CA
Ventura County, CA   
E-mail: Dan_Tappe@fws.gov
Phone Number: 805-644-5185
Visit the Refuge's Web Site:
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Hopper Mountain National Wildlife Refuge

Hopper Mountain National Wildlife Refuge is located in 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 refuge was established in 1974 to protect the endangered California condor, its habitat, and other wildlife resources.

The refuge is in rugged, mountainous terrain. Primary habitats include annual grasslands, interspersed with oak and California black walnut groves, with chaparral on the steeper slopes, natural water springs and riparian habitat, and a freshwater marsh. The California black walnut community is considered to be a unique habitat in California, and is recorded in the State Natural Heritage Database.

The refuge provides habitat for more than 130 species of birds, mammals, and reptiles, including the southwestern pond turtle--a California species of special concern--black bear, bobcat, mule deer, golden eagle, and California tree frog. More than 200 plant species have also been documented on the refuge.

Hopper Mountain Refuge plays an integral part in the California Condor Recovery Program, providing nesting and roosting habitat for the bird. The refuge shares information about the California Condor Recovery Program through an outreach program that extends to local, national and international publics.

The refuge is closed to public use to protect habitat for the endangered California condor and to support ongoing efforts to restore California condors to the wild. The road to the refuge runs through private lands, and the road itself is inaccessible to the general public.

Getting There . . .
The Hopper Mountain NWR is administered by the Hopper Mountain NWR Complex office in Ventura, California, and is located in Ventura County, approximately 6 air miles north of the town of Fillmore. The refuge is closed to public use.

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This refuge is closed to the public.

Recreation and Education Opportunities
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Management Activities
Refuge management programs focus on the reintroduction of California condors into the wild, and monitoring and studying the behavior of the released condors.

The refuge serves as a base of operations for field biologists who monitor and track the condors, which are outfitted with radio transmitters. Biologists monitor their behavior on and off the refuge, and observe condor nesting sites on and adjacent to the refuge.

In 1997, a large fire burned through the refuge. The vegetation on the refuge had not burned in over eighty years. Fire is a major component of the area's natural processes. After the 1997 fire and another fire in 1998, a graduate student studied the effects of fire on the southern California black walnut groves on the refuge.

The refuge also has an on-going pest plant control program in order to control further spreading of invasive plant species such as Russian thistle, white horehound, and canary grass.