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, 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
Plumas County is a county located 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.
Beckwourth is a census-designated place (CDP) in Plumas County, California, United States. Beckwourth is located on the Middle Fork Feather River 5 miles (8.0 km) east of Portola. The population was 432 at the 2010 census, up from 342 at the 2000 census.
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.
The Keddie Wye is a railroad junction in the form of a wye on the Union Pacific Railroad in Plumas County, California, United States. Located at the town of Keddie, it joins the east-west Feather River Route and the "Inside Gateway"—formally, the BNSF Gateway Subdivision—which runs north to Bieber.
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 89 is a state highway in the U.S. state of California that travels in the north–south direction, serving as a major thoroughfare for many mountain communities in the Sierra Nevada and the Cascade Range. It starts from U.S. Route 395 near Topaz Lake, winding its way up to the 8,314-foot (2,534 m) Monitor Pass, down to the Carson River, and up again over the 7,740-foot (2,359 m) Luther Pass. From that point on, the route generally loses elevation on its way past Lake Tahoe, through Tahoe and Plumas National Forests until Lake Almanor. For roughly nine miles the route is then a part of State Route 36. The route then ascends to the 5,753-foot (1,754 m) Morgan Summit. After it enters Lassen Volcanic National Park it continues to gain elevation until it reaches its highest point in an unnamed pass in the middle of Lassen Peak and Bumpass Mountain. The road then descends and heads northwest, finally terminating at Interstate 5 at the foot of Mount Shasta at around 3,600 feet (1,100 m).
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.
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.
Chilcoot is an unincorporated community in Plumas County, California. It lies at an elevation of 5,013 feet (1,528 m). Chilcoot is located 17 miles (27.4 km) east of Portola.
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.
Martis Valley is a geographic area of 70 square miles (180 km2) in the United States, extending northward from the North Shore of Lake Tahoe, California, to the west of the California-Nevada border. It is located in Placer and Nevada Counties and is bisected by Martis Creek which flows north to the Truckee River.
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.
Hope Valley is a broad mountain valley in Alpine County, California, located on the eastern slope of the Sierra Nevada to the northeast of Carson Pass and south of Lake Tahoe. The valley served as a major thoroughfare for the passage of settlers and emigrants to and from California during the Gold Rush era. Sitting at an elevation of just above 7,000 feet (2,100 m) and framed by peaks reaching over 10,000 feet (3,000 m) high, Hope Valley is known for its wide vistas, fly fishing, fall colors, and winter activities.
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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