The Spenceville Wildlife Area is an
wildlife preserve
A nature reserve (also known as a wildlife refuge, wildlife sanctuary, biosphere reserve or bioreserve, natural or nature preserve, or nature conservation area) is a protected area of importance for flora, fauna, or features of geological or o ...
managed by the
California Department of Fish and Wildlife
The California Department of Fish and Wildlife (CDFW), formerly known as the California Department of Fish and Game (CDFG), is a state agency under the California Natural Resources Agency. The Department of Fish and Wildlife manages and protect ...
. It is located in the
Sierra Nevada
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 ...
Foothills, within
Nevada County and
Yuba County
Yuba County (; Maidu: ''Yubu'') is a county in the U.S. state of California. As of the 2020 U.S. Census, the population was 81,575. The county seat is Marysville. Yuba County is included in the Yuba City, California Metropolitan Statistical A ...
of northern
California
California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...
.
[ DFW.ca.gov: Spenceville Wildlife Area]
/ref>
Geography
The preserve is approximately east of the town of Marysville and Beale Air Force Base
Beale Air Force Base (AFB) is a United States Air Force base located approximately east of Marysville, California. It is located outside Linda, about east of the towns of Marysville and Yuba City, and about north of Sacramento.
The host ...
in the eastern Sacramento Valley
, photo =Sacramento Riverfront.jpg
, photo_caption= Sacramento
, map_image=Map california central valley.jpg
, map_caption= The Central Valley of California
, location = California, United States
, coordinates =
, boundaries = Sierra Nevada (ea ...
. The elevation of the area varies from . [
]
Natural history
Spenceville is a foothill oak woodland of Blue oak (''Quercus douglasii'') and Foothill gray pine (''Pinus sabiniana''), and a grassland habitat
In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical ...
. It is notable for many species of native birds and wildflowers, including the California endemic Yellow mariposa lily (''Calochortus luteus'').
The geology
Geology () is a branch of natural science concerned with Earth and other astronomical objects, the features or rocks of which it is composed, and the processes by which they change over time. Modern geology significantly overlaps all other Ear ...
of the Spenceville area is part of the Smartville Block
The Smartville Block, also called the Smartville Ophiolite, Smartville Complex, or Smartville Intrusive Complex, is a geologic terrane formed in the ocean from a volcanic island arc that was accreted onto the North American Plate during the late J ...
formed during the Middle Jurassic
The Middle Jurassic is the second epoch of the Jurassic Period. It lasted from about 174.1 to 163.5 million years ago. Fossils of land-dwelling animals, such as dinosaurs, from the Middle Jurassic are relatively rare, but geological formations co ...
epoch 200 million years ago. The Smartville Block is a part of the California Mother Lode for gold, and consequently Spenceville has had its share of mining activity.[ Cleanup from copper and ]zinc
Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodi ...
mining continues to this day. Consrv.ca.gov: ''Spenceville Wildlife Area mine site cleanup''
State of California. 2007.
The area was originally home to the Maidu
The Maidu are a Native American people of northern California. They reside in the central Sierra Nevada, in the watershed area of the Feather and American rivers. They also reside in Humbug Valley. In Maiduan languages, ''Maidu'' means "man."
...
and Nisenan
The Nisenan are a group of Native Americans and an Indigenous people of California from the Yuba River and American River watersheds in Northern California and the California Central Valley. The Nisenan people are classified as part of the large ...
Native Americans and evidence of their grinding holes and lodge pits still exist. [
]
Recreation
Spenceville hosts a variety of activities: hiking
Hiking is a long, vigorous walk, usually on trails or footpaths in the countryside. Walking for pleasure developed in Europe during the eighteenth century.AMATO, JOSEPH A. "Mind over Foot: Romantic Walking and Rambling." In ''On Foot: A Histor ...
, biking, hunting, hunting dog field trials, target shooting, camping, equestrian
The word equestrian is a reference to equestrianism, or horseback riding, derived from Latin ' and ', "horse".
Horseback riding (or Riding in British English)
Examples of this are:
*Equestrian sports
*Equestrian order, one of the upper classes in ...
trail riding, birding
Birdwatching, or birding, is the observing of birds, either as a recreational activity or as a form of citizen science. A birdwatcher may observe by using their naked eye, by using a visual enhancement device like binoculars or a telescope, by ...
, and primitive camping. [ A popular trail leads to a double waterfall called Fairy Falls (a.k.a. Beale Falls, Shingle Falls, or Dry Creek Falls). There can be a high level of rattlesnakes seasonally.
]
Conservation
The Spenceville Wildlife Area may be environmentally impacted by the Waldo Dam Project proposed by the Yuba County Water Agency, and by housing development proposed between Beale Air Force Base
Beale Air Force Base (AFB) is a United States Air Force base located approximately east of Marysville, California. It is located outside Linda, about east of the towns of Marysville and Yuba City, and about north of Sacramento.
The host ...
and the wildlife area.
See also
* California oak woodland
California oak woodland is a plant community found throughout the California chaparral and woodlands ecoregion of California in the United States and northwestern Baja California in Mexico. Oak woodland is widespread at lower elevations in coasta ...
s
*
*
References
External links
California Department of Fish and Wildlife−DFW: official Spenceville Wildlife Area website
CA−DFW: Map of Spenceville Wildlife Area
Friends of Spenceville website
{{Protected areas of California, SWA
Nature reserves in California
California Department of Fish and Wildlife areas
Protected areas of Yuba County, California
Protected areas of Nevada County, California
Protected areas of the Sierra Nevada (United States)
1968 establishments in California
Protected areas established in 1968