Sierra Valley is a large mountain valley located east of the crest of California's Sierra Nevada mountain range in Plumas and Sierra Counties, north of Interstate 80.
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Sierra Valley is a large mountain valley located east of the crest of California's Sierra Nevada mountain range in Plumas and Sierra Counties, north of Interstate 80.
An intermontane valley at approximately 4,850 feet (1,480 m) elevation, Sierra Valley is surrounded by mountains ranging in elevation from 6,000 to 8,000 feet (2,400 m). The huge valley covering about 590 square miles (1,500 km2) [1] is a down-faulted basin, formerly a lake of similar geologic origin to Lake Tahoe to the south, now filled with sediment up to two thousand feet thick. The former Lake has the suggested name of Lake Beckwourth and existed until approximately 10,000 years ago. [2] Average annual rainfall is less than twenty inches, most falling as snow. The valley floor has a grassland and sagebrush ecosystem and is the site of extensive freshwater marshes filled with cattails, bulrushes and alkaline flats that drain into the Middle Fork Feather River. [3] Many species of wildlife make their permanent home in the valley, and a great number of migratory bird species stop over in the fall and nest in the valley in the spring. The valley also has thermal activity, with Marble Hot Springs located in the north central valley floor.
Sierra Valley is an agricultural and livestock region. Tourism also contributes to the local economy.
Entrance from the west is through Yuba Pass on State Route 49. Entrance from the east is through Beckwourth Pass, the lowest mountain pass on the crest of the Sierra Nevada, on State Route 70. State Route 89 skirts the southern end of the valley. State Route 49, the Gold Rush trail, terminates at State Route 70 in Vinton, and the latter highway then terminates at Hallelujah Junction on U.S. Route 395 after passing through Chilcoot.
A Biological Baseline Study of Sierra Valley Marsh, California 1976. Dept. of Biology, SFSU. NSF SOS grant SMI-76-08071. This was a student originated study funded by the National Science Foundation to assess biological resources of the high-altitude freshwater marsh in Sierra Valley. https://archive.org/details/SierraValleyStudy/page/n23
The Sierra Nevada is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies primarily in Nevada. The Sierra Nevada is part of the American Cordillera, an almost continuous chain of mountain ranges that forms the western "backbone" of the Americas.
Plumas County is a county in the Sierra Nevada of the U.S. state of California. As of the 2020 census, the population was 19,790. The county seat is Quincy, and the only incorporated city is Portola. The largest community in the county is East Quincy. The county was named for the Spanish Río de las Plumas, which flows through it. The county itself is also the namesake of a native moth species, Hadena plumasata.
The Feather River is the principal tributary of the Sacramento River, in the Sacramento Valley of Northern California. The river's main stem is about 73 miles (117 km) long. Its length to its most distant headwater tributary is just over 210 miles (340 km). The main stem Feather River begins in Lake Oroville, where its four long tributary forks join—the South Fork, Middle Fork, North Fork, and West Branch Feather Rivers. These and other tributaries drain part of the northern Sierra Nevada, and the extreme southern Cascades, as well as a small portion of the Sacramento Valley. The total drainage basin is about 6,200 square miles (16,000 km2), with approximately 3,604 square miles (9,330 km2) above Lake Oroville.
Plumas National Forest is a 1,146,000-acre (4,640 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.
State Route 70 is a state highway in the U.S. state of California, connecting SR 99 north of Sacramento with U.S. Route 395 near Beckwourth Pass via the Feather River Canyon. Through the Feather River Canyon, from SR 149 to US 395, SR 70 is the Feather River Scenic Byway, a Forest Service Byway that parallels the ex-Western Pacific Railroad's Feather River Route.
Beckwourth Pass is the lowest mountain pass in the Sierra Nevada mountain range at an elevation of 5,221 feet (1,591 m).
Area code 530 is a telephone area code in the North American Numbering Plan (NANP) in northeastern and Northern California. It was created in 1997 in an area code split of 916.
Sierra Highway or El Camino Sierra is a road in Southern California, United States. El Camino Sierra refers to the full length of a trail formed in the 19th century, rebuilt as highways in the early 20th century, that ran from Los Angeles to Lake Tahoe following parts of modern State Route 14, U.S. Route 395 and State Route 89. Two portions of this road are currently signed as Sierra Highway. The first is an old alignment of SR 14/U.S. Route 6 from Los Angeles to Mojave. This road is also signed with the unusual designation of State Route 14U through the city of Santa Clarita. The second part signed as Sierra Highway is a portion of US 395 in Bishop.
The Williams Loop is a rail spiral on the Union Pacific Railroad's Feather River Route through the Sierra Nevada mountains in northeastern California, connecting the Sacramento Valley to Salt Lake City via the Feather River canyons. Located about five miles east of East Quincy, the loop is used to gain elevation on the eastward climb to its summit at Beckwourth Pass while maintaining the railroad's overall 1.0 percent (compensated) grade, the least steep of any grade on a transcontinental railroad. Built in 1914 by the Western Pacific Railroad, the loop and the nearby Spring Garden Tunnel help surmount the divide between the East Branch North Fork Feather River and the Middle Fork Feather River.
Frenchman Lake is a reservoir located in southeastern Plumas County, California. It was created by the damming of Little Last Chance Creek in 1961, as part of the California State Water Project. It was named after its tributary Frenchman Creek, which in turn was named after Claude Francois Seltier, a French immigrant who settled in the area in 1858.
Vinton is an unincorporated community in Plumas County, California. It lies at an elevation of 4,947 feet (1,508 m). Vinton is located 2 miles (3.2 km) west of Chilcoot.
State Route 431, commonly known as the Mount Rose Highway, is a 24.413-mile-long (39.289 km) highway in Washoe County, Nevada, that connects Incline Village at Lake Tahoe with Reno. The highway, a Nevada Scenic Byway, takes its name from Mount Rose, which lies just off the highway. Prior to 1976, the highway existed as State Route 27.
The Clio Trestle is a railroad trestle on the historic Feather River Route of the Union Pacific Railroad. It is located in the Sierra Nevada near Clio in Plumas County, California. The trestle is 172 feet (52 m) high and 1,005 feet (306 m) long.
The Spring Garden Tunnel is a railway tunnel located at Spring Garden, California. At 7,344 ft long, it is the longest of 34 tunnels on the Feather River Route and crosses under the drainage divide between the East Branch North Fork Feather River and the Middle Fork Feather River.
The Dardanelles and Freel Roadless Areas are located 7 miles (11 km) and 3 miles (4.8 km), respectively, south of Lake Tahoe, California, and both are managed by the Lake Tahoe Basin Management Unit of the US Forest Service.These areas are contiguous, separated only by the corridor of highway 89. The historic Hawley Grade, an immigrant wagon road, now a hiking trail, is within the Dardanelles Roadless Area, as well as the watershed of Lake Tahoe's largest inflow, the Upper Truckee River.
The Tobin Bridges are two bridges for highway and railroad crossings of the North Fork Feather River that nearly cross at the west side of the river. The railroad bridge also crosses over Highway 70.
The Pulga Bridges are two nearby bridges for highway and railroad crossings of the North Fork Feather River. The steel arch highway bridge, carrying State Route 70, crosses over the railroad bridge.
The protected areas of the Sierra Nevada, a major mountain range located in the U.S. states of California and Nevada, are numerous and highly diverse. Like the mountain range itself, these areas span hundreds of miles along the length of the range, and over 14,000 feet of elevation from the lowest foothills to the summit of Mount Whitney.
The 2020 Loyalton Fire was a large wildfire in Lassen, Plumas and Sierra counties in California and Washoe County in Nevada. After it was ignited by lightning on August 14, 2020, the fire burned 47,029 acres (19,032 ha) in the Tahoe National Forest and the Humboldt-Toiyabe National Forest before it was fully contained on August 26. The Loyalton Fire was notable for generating three fire tornadoes on August 15, necessitating first-of-their-kind warnings by the National Weather Service.
The Lost Sierra is the northern Sierra Nevada region in California in the United States. It encompasses the area of Plumas and Sierra Counties.
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