Middle Fork Feather River
El Rio de las Plumas[1]
The Middle Fork near Red Bridge Campground, May 2022
Map of the Feather River watershed including the Middle Fork Feather
Etymology"Plumas" means "feather" in Spanish
Location
CountryUnited States
StateCalifornia
RegionSierra Nevada
CitiesBeckwourth, Portola, Cromberg, Graeagle
Physical characteristics
SourceNear Beckwourth
 • locationSierra Valley, Plumas County
 • coordinates39°48′49″N 120°22′46″W / 39.81361°N 120.37944°W / 39.81361; -120.37944[1]
 • elevation4,872 ft (1,485 m)[2]
MouthLake Oroville
 • location
About 10 miles (16 km) northeast of Oroville, Butte County
 • coordinates
39°38′29″N 121°17′11″W / 39.64139°N 121.28639°W / 39.64139; -121.28639[1]
 • elevation
928 ft (283 m)[1]
Length98 mi (158 km), East-west
Basin size1,062 sq mi (2,750 km2)[3]
Discharge 
 • locationMerrimac[3]
 • average1,489.5 cu ft/s (42.18 m3/s)[3]
 • maximum86,200 cu ft/s (2,440 m3/s)[4]
Basin features
River systemFeather River watershed
Tributaries 
 • leftSulphur Creek, Frazier Creek, Gray Eagle Creek, Jamison Creek, Nelson Creek, Onion Valley Creek, South Branch Middle Fork Feather River, Fall River
 • rightLittle Last Chance Creek, Big Grizzly Creek, Bear Creek, North Fork Middle Fork Feather River

The Middle Fork Feather River is a major river in Plumas and Butte Counties in the U.S. state of California.[1] Nearly 100 miles (160 km) long, it drains about 1,062 square miles (2,750 km2)[3] of the rugged northern Sierra Nevada range.[5]

Its headwaters are located near Beckwourth[1] in the largest alpine basin in the Sierra Nevada, the Sierra Valley. The convergence of several streams there creates the Sierra Valley Channels,[6] the largest of which is Little Last Chance Creek, flowing out of Frenchman Lake across the northeast side of the valley. Flowing west, it is joined by Big Grizzly Creek, with waters from Lake Davis. The river continues west, passing Portola and turning northwest at Clio,[6] where it is joined by Sulphur Creek. In the area of Graeagle, It is joined by Frazier Creek, flowing out of Gold Lake, then Gray Eagle Creek, flowing out of Long Lake. After flowing through the Mohawk Valley, it then turns westwards into a canyon. Jamison Creek and Nelson Creek enter from the left, then Onion Valley Creek a few miles onward.[6] Bear Creek, Willow Creek and the North Fork Middle Fork Feather River all come in from the right as the river courses west-southwest through a tight, steep canyon strewn with rapids.[6] It is then joined by the South Branch Middle Fork Feather River from the left.[6] As the river widens into an arm of Lake Oroville, a reservoir formed by the Oroville Dam, the Fall River joins from the left.[6] The reservoir is fed by the North, Middle, West and South Forks of the Feather River, which once joined in the valley to form the main Feather River. That river continues southwards to join the Sacramento River near the unincorporated community of Plumas Landing.[6]

One of the Middle Fork Feather's tributaries, the Fall River, feeds the 640-foot (200 m) Feather Falls. This waterfall is often claimed to be the third or sixth tallest in the United States;[7][8] but in reality is nowhere near the top ten in height.[9]

Wild and Scenic River

The Middle Fork is recognized by the US Government for its untamed beauty and is designated a National Wild and Scenic River for 77.6 miles of its length.[10] The 32.9 mile stretch inaccessible to roads is home to some of the best wild trout fishing in California.

Grizzly Valley

The Grizzly Valley is a 21 sq mi (54 km2) landform of the upper Middle Fork Feather watershed that receives 29-37 inches of annual precipitation.[11] The valley is the location of Lake Davis, an impoundment of Big Grizzly Creek by the 1967 Grizzly Valley Dam.[12]

References

  1. 1 2 3 4 5 6 "Middle Fork Feather River". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. 1981-01-19. Retrieved 2010-09-16. NOTE For the coordinates of the Middle Fork's mouth, the USGS's National Elevation Database lists a different elevation (902.7 ft):
  2. ↑ "North Channel Little Last Chance Creek". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. 1981-01-19. Retrieved 2010-09-16.
  3. 1 2 3 4 "USGS Gage #11394500 on the Middle Fork Feather River near Merrimac, CA (Monthly Average Streamflow)". National Water Information System. U.S. Geological Survey. 1951–1986. Retrieved 2010-09-16.
  4. ↑ "USGS Gage #11394500 on the Middle Fork Feather River near Merrimac, CA (Peak Streamflow)". National Water Information System. U.S. Geological Survey. 1951–1986. Retrieved 2010-09-16.
  5. ↑ George, Holly; et al. (March 2007). "Upper Feather River Watershed (UFRW) Irrigation Discharge Management Program" (PDF). State Water Resources Control Board. University of California Davis. Archived from the original (PDF) on 2010-06-12. Retrieved 2010-09-16.
  6. 1 2 3 4 5 6 7 USGS Topo Maps for United States (Map). Cartography by United States Geological Survey. ACME Mapper. Retrieved 2010-09-16.
  7. ↑ Soares, John R.; Soares, Marc J. (2008). 100 Classic Hikes in Northern California. The Mountaineers Books. p. 68. ISBN 978-1-59485-062-2.
  8. ↑ Adkison, Ron (2000). Hiking Northern California. Globe Pequot. p. 267. ISBN 1-56044-701-X.
  9. ↑ Swan, Bryan; Goss, Dean. "Showing all Waterfalls in USA". World Waterfall Database. Retrieved 2010-09-16.
  10. ↑ "Middle Fork of the Feather Wild and Scenic River, California". rivers.gov. Archived from the original on 2011-10-15. Retrieved 2011-11-03.
  11. ↑ "Grizzly Valley Groundwater Basin" (PDF). 2004-02-27. Retrieved 2010-09-24.
  12. ↑ "Appendix H" (PDF). EPA.gov. Retrieved 2010-09-24.
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