Great Basin Divide

Hydrological divide in western United States bounding a large endorheic basin

Not to be confused with Great Divide Basin or Great Western Divide.

Great Basin Divide

The Great Basin Divide (shown as the brown line on the map) demarcates the Great Basin.

Geography
Countries| United States and Mexico
Parent range| North America

Columbia/ Klamath

44.1°N (Silvies R divide)

Dean
Pass

Columbia/Colorado

I-80[citation needed]

I-70[citation needed]

Paunsaugunt Pl

Delamar V

Klamath/ Sacramento

Pegleg Mtn

I-80 Euer P

Peeler Lake

Crumbly Sp[1]

Tehachapi Pass

Wasson Sill

31.46°N

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Great Basin Divide

-triple pt,[1] -overflow pt, -border, -other

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The Great Basin Divide in the western United States is the ridgeline that separates the Great Basin from the Pacific Ocean watershed, which completely surrounds it.

The Great Basin is the largest set of contiguous endorheic watersheds of North America, including six entire USGS watershed subregions.[2] It contains the watersheds of several large prehistoric and still-existing lakes, most notably Lake Bonneville, Lake Lahontan, Lake Manly, and the Salton Sea. As such, it occupies most of present-day Nevada, about half of Utah, large parts of eastern California and Oregon, and small parts of Idaho, Wyoming, and Baja California. The arid climate of this area ensures that none of the major lake basins are filled to overflowing, and thus no precipitation falling into them reaches the sea.

Precipitation falling on the exterior of the Great Basin Divide does (if not evaporated or consumed on the way) reach the Pacific Ocean, through a number of different channels. Roughly speaking, the area to the north and northeast of the Great Basin drains into the Columbia River, mostly via the Snake River. Likewise, the area to the south and southeast drains into the Colorado River, a good part of it via the Green River. The area west of the Great Basin is drained by the Klamath River, the Central Valley of California (Sacramento and San Joaquin Rivers), and various small rivers of southern California and northern Baja California.

## References

[edit]

1. ^ a b "USA Lower 48 Triple Divide Points". PeakBagger.com. Retrieved 2011-11-13.
2. ^ "Boundary Descriptions and Names of Regions, Subregions, Accounting Units and Cataloging Units". USGS.gov. Retrieved 2010-06-07.

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Great Basin watersheds

* Bear River
* Upper Bear River
* Lower Bear River
* Great Salt Lake
* Weber River
* Jordan River
* Great Salt Lake Desert
* Escalante-Sevier
* Escalante Desert
* Sevier River
* Black Rock-Humboldt
* Humboldt River
* Black Rock Desert
* Central Lahontan
* Truckee River
* Carson River
* Walker River
* Central Nevada desert
* Oregon closed basins
* Tulare-Buena Vista
* Kern River
* Tule River
* Tulare Lake
* North Lahontan
* Northern Mojave-Mono Lake
* Mono Lake
* Owens Lake
* Amargosa River
* Mojave River
* Southern Mojave-Salton Sea
* Salton Sea
* Southern Mojave Desert
* Baja California & other California
* Laguna Salada
* Goose Lake
* Lost River
* San Jacinto River

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