The Humboldt Sink is an intermittent

dry lake A dry lake bed, also known as a playa (), is a basin or depression that formerly contained a standing surface water body, which disappears when evaporation processes exceed recharge. If the floor of a dry lake is covered by deposits of alkalin ...

bed, approximately 11 mi (18 km) long, and 4 mi (6 km) across, in northwestern

Nevada Nevada ( ; ) is a landlocked state in the Western United States. It borders Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. Nevada is the seventh-most extensive, th ...

in the United States. The body of water in the sink is known as Humboldt Lake. The sink and its surrounding area was a notorious and dreaded portion (called the Forty Mile Desert) of overland travel to California during the westward migrations of the mid-1800s, which were largely undertaken along the California Trail. Humboldt Sink is located between the West Humboldt Range (to the southeast) and the Trinity Range (to the northwest), on the border between Pershing and Churchill counties, approximately northeast of Reno. It is fed from the northeast by the

Humboldt River The Humboldt River is the longest river in the northern and central part of Nevada. It extends in a general east-to-west direction from its headwaters in northern Nevada's Jarbidge Mountains, Jarbidge, Independence Mountains, Independence, and ...

, the second longest river in the

Great Basin The Great Basin () is the largest area of contiguous endorheic watersheds, those with no outlets to the ocean, in North America. It spans nearly all of Nevada, much of Utah, and portions of California, Idaho, Oregon, Wyoming, and Baja Californi ...

of North America (after the Bear River).

Interstate 80 Interstate 80 (I-80) is an east–west transcontinental freeway that crosses the United States from San Francisco, California, to Teaneck, New Jersey, in the New York metropolitan area. The highway was designated in 1956 as one of the ori ...

(I-80) passes along the northwest side of the

sink A sink (also known as ''basin'' in the UK) is a bowl-shaped plumbing fixture for washing hands, dishwashing, and other purposes. Sinks have a tap (faucet) that supplies hot and cold water and may include a spray feature to be used for fas ...

. The sink has no natural outlet. A channel connecting it with the

Carson Sink Carson Sink is a playa in the northeastern portion of the Carson Desert in present-day Nevada, United States of America, that was formerly the terminus of the Carson River. Today the sink is fed by drainage canals of the Truckee-Carson Irriga ...

was cut by the

Nevada Department of Transportation The Nevada Department of Transportation (Nevada DOT or NDOT) is a government agency in the U.S. state of Nevada. NDOT is responsible for maintaining and improving Nevada's highway system, which includes U.S. highways and Interstate highways with ...

in 1984 to prevent I-80 and the town of Lovelock from flooding after heavy snowfall in the preceding three years. As of 2004, this channel has been dry since 1986. The sink, along with the Carson Sink, is remnants of the larger prehistoric Lake Lahontan that existed at the end of the last

ice age An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages, and g ...

, approximately 13,000 years ago. The sink is protected as part of the Humboldt Wildlife Management Area.

Wetland A wetland is a distinct semi-aquatic ecosystem whose groundcovers are flooded or saturated in water, either permanently, for years or decades, or only seasonally. Flooding results in oxygen-poor ( anoxic) processes taking place, especially ...

s in and near the sink, such as the Humboldt Salt Marsh provide important nesting, foraging, and resting habitat to large numbers of migratory birds. The sink has a long history of human habitation. In addition to

Lovelock Cave Lovelock Cave (NV-Ch-18) is a North American archaeological site previously known as Sunset Guano Cave, Horseshoe Cave, and Loud Site 18. The cave is about long and wide.Heizer, Robert F., and Lewis K. Napton (1970). ''Archaeology and the Prehi ...

, an outcrop in the West Humboldt Range in which 2000-year-old duck decoys have been found, there is also evidence of huts constructed in the bed of Lake Humboldt. Evidence from these important archaeological sites suggests that Native Americans hunted and fished in the Humboldt Sink during wetter climatic periods. These

landform A landform is a land feature on the solid surface of the Earth or other planetary body. They may be natural or may be anthropogenic (caused or influenced by human activity). Landforms together make up a given terrain, and their arrangement ...

s are named for the Humboldt River, which is in turn named after German naturalist

Alexander von Humboldt Friedrich Wilhelm Heinrich Alexander von Humboldt (14 September 1769 – 6 May 1859) was a German polymath, geographer, natural history, naturalist, List of explorers, explorer, and proponent of Romanticism, Romantic philosophy and Romanticism ...

References

External links

{{coord, 39, 58, 22, N, 118, 36, 27, W, scale:100000, display=title Landforms of Churchill County, Nevada Lahontan Basin Landforms of Pershing County, Nevada