
Plumas National Forest is a 1,146,000-acre (4,638 km2) United States National Forest located at the northern terminus of the Sierra Nevada, in northern California. The Forest was named after its primary watershed, the Rio de las Plumas, or Feather River.

Astragalus webberi is a rare species of milkvetch known by the common name Webber's milkvetch. It is endemic to the coniferous forests in the Sierra Nevada, in Plumas County, eastern California.

Ivesia sericoleuca is a species of flowering plant in the rose family known by the common name Plumas mousetail, or Plumas ivesia.

Lake Almanor is a large reservoir in northwestern Plumas County, northeastern California, United States. The reservoir has a capacity of 1,308,000 acre feet (1.613×109 m3) and a maximum depth of about 90 feet (27 meters). It is formed by Canyon Dam on the North Fork of the Feather River, as well as Benner and Last Chance Creeks, Hamilton Branch, and various natural springs.

Bald Rock is a granite batholith located in Butte County, California, in the Plumas National Forest. Located close to Lake Oroville, the dome peak overlooks Sacramento Valley and coastal mountain ranges.

The Bucks Lake Wilderness is a 23,958-acre (97.0 km2) wilderness area located in the Plumas National Forest section of the Sierra Nevada, in northeastern California, United States.
Butterfly Valley Botanical Area, in the northern Sierra Nevada, was designated a protected botanical area in 1976 due to its abundance and diversity of plant life. It is located just north of Quincy, in Plumas County of northeastern California, United States. The diverse and unique plant community habitats in the nature reserve, at elevations of 3,590–3,800 feet (1,090–1,160 m), are protected and managed by the Mt. Hough Ranger District of the Plumas National Forest.
The East Branch North Fork Feather River is a left tributary of the North Fork Feather River in the northern Sierra Nevada, Plumas County, California. Primarily within the Plumas National Forest, its course extends from Paxton to Belden.

Feather Falls is a waterfall located on the Fall River, a tributary of the Middle Fork Feather River, within the Plumas National Forest in the Sierra Nevada mountain range in Butte County, eastern California, United States.

Mount Fillmore is a mountain in the Plumas National Forest in Sierra County, California. It is 8 miles (13 km) northeast of La Porte and 12 miles (19 km) north of Downieville.

Frenchman Lake (a.k.a. Frenchmen's Reservoir and several derivations thereof) is located in Southeastern Plumas County, California and was created by the damming of Little Last Chance Creek. It was named after Frenchman Creek and Claude Francois Seltier, a French immigrant who settled in the area in 1858.

Grass Flat is an unincorporated community and ghost town in northwestern Sierra County, California, United States.

The Indian Valley (IV) Railroad was a shortline railroad that was constructed from the Engels Copper Mine to a connection with the Western Pacific Railroad at Paxton, in Plumas County, northeastern California.

The Yuba County Five were all young men from Yuba City, California, United States, all with mild intellectual disabilities or psychiatric conditions, who attended a college basketball game at California State University, Chico on the night of February 24, 1978. Four of them—Bill Sterling, 29; Jack Huett, 24; Ted Weiher, 32; and Jack Madruga, 30—were later found dead; the fifth, Gary Mathias, 25, has never been found.

The Middle Fork Feather River is a major river in Plumas and Butte Counties in the U.S. state of California. Nearly 100 miles (160 km) long, it drains about 1,062 square miles (2,750 km2) of the rugged northern Sierra Nevada range.

Sugar Pine Peak is a mountain located in the northern Northern Sierra Nevada, in the Plumas National Forest in California.