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Tehachapi Mountains
Wind farm east of Tehachapi Pass
Country	United States
State	California
Counties	Kern, Los Angeles
Highest point	Double Mountain
- elevation	7,981 ft (2,433 m)

The Tehachapi Mountains (IPA: [təˈhætʃəˌpi]) are a short transverse range in southern California in the United States, running SW-NE connecting the Coast Ranges on the west with the southern end of the Sierra Nevada mountains on the east. The range extends for approximately 40 mi (64 km) SW-NE in southern Kern County southeast of Bakersfield and vary in height from approximately 4,000 ft (1,220 m) to 8,000 ft (2,440 m).

Contents 1 Description 2 Climate 3 Peaks 4 See also

The range forms a barrier separating the San Joaquin Valley to the northwest and the Mojave Desert in the Great Basin to the southeast. The range is crossed by Tejon Pass at its southwestern end (providing the route for Interstate 5). This dramatic incline downhill to the San Joaquin Valley floor is regionally referred to as The Grapevine because of the grapevines still found on the earlier route on the mountain slope next to the highway. The less geographically dramatic Tehachapi Pass found on California State Highway 58 is at its northeastern end. It is also crossed by the California Aqueduct that supplies water from the Sacramento-San Joaquin Delta to Southern California. The Los Angeles Aqueduct flows along the southern edge of the mountains. The Tehachapi Loop provides a major railroad link across the mountains and is considered an engineering marvel.

The Tehachapis, though not a long or high mountain range as California mountain ranges go, are regarded by many Californians the dividing feature that separates northern California from southern California (though some contend that southern California extends as far north as the Fresno area). Because the Ridge Route auto highway was constructed across these mountains and the ranges south of it in the early 20th century, many historians say California averted a potential split into two separate states - North California and South California.

The Monolith cement works, which supplied cement for the construction of Hoover Dam, among other major public works, is situated in the Tehachapis east of Tehachapi Pass.

The range is in an interesting crossroads among climate zones. The Great Basin to the east and southeast typically receives just a few inches of precipitation a year, usually in winter (with occasional winter enhancement from subtropical flows that laymen call the "Pineapple Express"). Summer monsoon season can bring very localized torrential rains to select areas of the range as well. To the south and southwest lie the main Transverse Ranges in the Los Padres National Forest and Angeles National Forests. Prevailing southwest winds howl over those ranges, through Tejon Pass and into the east-west canyons and valleys of the Tehachapi range with regularity (hence the windmills). To the northwest lies the hazy San Joaquin Valley with its oak savanna climbing the broad western slopes of the range. Like sand dunes piling up where winds converge, the Tehachapis collect marine and valley moisture, which piles up into fog that blankets the range many weeks of the year. Like Sicily is to Italy, the Tehachapi crest is a subalpine island at the toe of the Sierra Nevada, which dominates the northern skyline. The higher north-facing (subalpine) slopes are mixed conifer and scrub oak, while the south-facing (continental) are live oak, scrub and Gray Pine aka Ghost Pine, typical of the relationship between the moisture-retaining northern slopes and the year-round exposed southern slopes. The area surrounding the Tehachapi Crest is semiarid, including the sage country of the Tehachapi Pass area. Canyons, even on southern slopes, however, can have year-round water flows, particularly when orographic enhancement has squeezed extra precipitation from passing storms and snowmelt during the spring months.

• Double Mountain 7,981 ft (2,433 m)
• Tehachapi Mountain 7,960+ ft (2,426+ m)
• Cummings Mountain 7,760+ ft (2,365+ m)
• Bear Mountain 6,920+ ft (2,109+ m)
• Black Mountain 5,686 ft (1,733 m)
• Grapevine Peak 4,815 ft (1,468 m)

• Temblor Range - the other side of San Joaquin Valley
• San Emigdio Mountains
• Sierra Pelona Mountains