Pilot Knob (Imperial County, California)

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Pilot Knob
Pilot Knob is located in California
Pilot Knob
Pilot Knob
Imperial County, California. U.S.
Elevation 876 ft (267 m) NAVD 88[1]
Location
Coordinates 32°43′54″N 114°45′00″W / 32.731601906°N 114.7499458°W / 32.731601906; -114.7499458Coordinates: 32°43′54″N 114°45′00″W / 32.731601906°N 114.7499458°W / 32.731601906; -114.7499458[1]
Topo map USGS Yuma West
Geology
Type Volcanic plug

Pilot Knob (also, Avie Quah-la-Altwa, Ha-bee-co-la-la, and San Pablo) is a peak in Imperial County, California.[2] Pilot Knob is located 8 miles (13 km) southeast of Ogilby,[3] It rises to an elevation of 876 feet (267 m).[1] Pilot Knob is a rocky landform, geologically a Volcanic plug, west of Yuma, ArizonaWinterhaven, California; it is connected to the Cargo Muchacho Mountains, the central portion of the mountains being about 7 miles (11 km) north. Pilot Knob was named for its prominence as a landmark for riverboat traffic in the 19th-20th centuries on the Colorado River which borders Winterhaven–Yuma.

Pilot Knob description[edit]

Separated from the center of the Cargo Muchacho Mountains by 7 mi, the volcanic landform is at the base of alluvial fans. Pilot Knob has a height of 897 feet (273 m), and the entire mountain block is about 2 x 2 mi. The mountain has a rock quarry on its north side, visible from Interstate 8.

Access to Pilot Knob[edit]

Pilot Knob is accessed from Interstate 8, the landform being east of the Algodones Dunes and east of El Centro, California in southeastern Imperial County. The All American Canal is cut from the south border of Pilot Knob, and can be seen in aerial views traversing the Algodones Dunes to the west.

History[edit]

When Juan Bautista de Anza sighted the peak in 1774 he named it Cerro de San Pablo.[3] The Saint Thomas Yuma Indian Mission was located 8 miles (13 km) to the east.[3]

The Alamo Canal intake was placed at Pilot Knob due to the availability of a solid rock foundation for the head gate.[4]

KIVA (TV) Yuma, Arizona transmitted from Pilot Knob from 1953 to 1970.

References[edit]

  1. ^ a b c "West Pilot". NGS data sheet. U.S. National Geodetic Survey. Retrieved 2009-08-16. 
  2. ^ "Pilot Knob". Geographic Names Information System, U.S. Geological Survey. Retrieved 2009-08-16. 
  3. ^ a b c Durham, David L. (1998). California's Geographic Names: A Gazetteer of Historic and Modern Names of the State. Clovis, Calif.: Word Dancer Press. p. 1455. ISBN 1-884995-14-4. 
  4. ^ Clarence Everett Tait (1908). Irrigation in Imperial Valley, California: its problems and possibilities. Washington Government Printing Office. p. 51. ISBN 978-1-113-10178-5. Retrieved 26 August 2010.