Clear Lake National Wildlife Refuge in northeastern California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

 consists of approximately 20000 acres (80.9 km²) of open water surrounded by over 26000 acres (105.2 km²) of upland bunchgrass, low sagebrush

Sagebrush

Sagebrush is a common name of a number of shrubby plant species in the genus Artemisia native to western North America;Or, the sagebrush steppe ecoregion, having one or more kinds of sagebrush, bunchgrasses and others;...

, and juniper

Juniper

Junipers are coniferous plants in the genus Juniperus of the cypress family Cupressaceae. Depending on taxonomic viewpoint, there are between 50-67 species of juniper, widely distributed throughout the northern hemisphere, from the Arctic, south to tropical Africa in the Old World, and to the...

 habitat. Small, rocky islands in the lake provide nesting sites for American white pelican

American White Pelican

The American White Pelican is a large aquatic bird from the order Pelecaniformes. It breeds in interior North America, moving south and to the coasts, as far as Central America, in winter....

s, double-crested cormorant

Double-crested Cormorant

The Double-crested Cormorant is a member of the cormorant family of seabirds. It occurs along inland waterways as well as in coastal areas, and is widely distributed across North America, from the Aleutian Islands in Alaska down to Florida and Mexico...

s, and other colonial nesting birds.

The upland areas provide habitat for pronghorn antelope, mule deer

Mule Deer

The mule deer is a deer indigenous to western North America. The Mule Deer gets its name from its large mule-like ears. There are believed to be several subspecies, including the black-tailed deer...

, and sage grouse

Sage Grouse

The Sage Grouse is the largest grouse in North America, where it is known as the Greater Sage-Grouse. Its range is sagebrush country in the western United States and southern Alberta and Saskatchewan, Canada. A population of smaller birds, known in the U.S. as Gunnison Sage-Grouse, were recently...

. The Clear Lake Reservoir is the primary source of water for the agricultural program of the eastern half of the Klamath Basin

Klamath Basin

The Klamath Basin is the region in the U.S. states of Oregon and California drained by the Klamath River. It contains most of Klamath County and parts of Lake and Jackson counties in Oregon, and parts of Del Norte, Humboldt, Modoc, Siskiyou, and Trinity counties in California. The drainage basin...

, with water levels regulated by the Bureau of Reclamation.

Except for limited waterfowl

Waterfowl

Waterfowl are certain wildfowl of the order Anseriformes, especially members of the family Anatidae, which includes ducks, geese, and swans....

 and pronghorn antelope hunting

Hunting

Hunting is the practice of pursuing any living thing, usually wildlife, for food, recreation, or trade. In present-day use, the term refers to lawful hunting, as distinguished from poaching, which is the killing, trapping or capture of the hunted species contrary to applicable law...

during the regular California State seasons, the refuge is closed to all public access to protect fragile habitats and to reduce disturbance to wildlife. Some viewing of strutting sage grouse occurs in the spring from U.S. Forest Service Road 136, which runs along and through the refuge's southern boundary.