The Kuparuk River ( Iñupiaq: ''Kuukpaaġruk'') is a

river A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of wate ...

Alaska Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., ...

's North Slope that enters a bay on the

Beaufort Sea The Beaufort Sea (; french: Mer de Beaufort, Iñupiaq: ''Taġiuq'') is a marginal sea of the Arctic Ocean, located north of the Northwest Territories, the Yukon, and Alaska, and west of Canada's Arctic islands. The sea is named after Sir Fr ...

between Beechey Point and

Prudhoe Bay Prudhoe Bay is a census-designated place (CDP) located in North Slope Borough in the U.S. state of Alaska. As of the 2010 census, the population of the CDP was 2,174 people, up from just five residents in the 2000 census; however, at any give ...

. The north-flowing river is about long, and its

delta Delta commonly refers to: * Delta (letter) (Δ or δ), a letter of the Greek alphabet * River delta, at a river mouth * D ( NATO phonetic alphabet: "Delta") * Delta Air Lines, US * Delta variant of SARS-CoV-2 that causes COVID-19 Delta may also ...

is about wide. Its

Eskimo Eskimo () is an exonym used to refer to two closely related Indigenous peoples: the Inuit (including the Alaska Native Iñupiat, the Greenlandic Inuit, and the Canadian Inuit) and the Yupik peoples, Yupik (or Siberian Yupik, Yuit) of eastern Si ...

name appeared on a map drawn in 1901 by a

prospector Prospector may refer to: Space exploration * Prospector (spacecraft), a planned lunar probe, canceled in 1962 * '' Lunar Prospector'', a NASA spacecraft Trains * Prospector (train), a passenger train operated by the Denver & Rio Grande Western ...

who spelled it ''Koopowra'', which he translated as ''Big River''. ''Kuukpaaġruk'' can be translated to a "smaller version of a big river". Kuparuk Mound, a

pingo Pingos are intrapermafrost ice-cored hills, high and in diameter. They are typically conical in shape and grow and persist only in permafrost environments, such as the Arctic and subarctic. A pingo is a periglacial landform, which is defin ...

about southeast of Beechey Point, is named after the river. Arctic explorer

Ernest de Koven Leffingwell Ernest de Koven Leffingwell (January 13, 1875January 27, 1971) was an arctic explorer, geologist and Spanish–American War veteran. During the period from 1906 to 1914, Leffingwell spent nine summers and six winters on the Arctic coast of Alaska ...

named the mound, which he used as a

triangulation station A triangulation station, also known as a trigonometrical point, and sometimes informally as a trig, is a fixed surveying station, used in geodetic surveying and other surveying projects in its vicinity. The nomenclature varies regionally: they a ...

in 1911. The

Kuparuk River oil field The Kuparuk River Oil Field, or Kuparuk, located in North Slope Borough, Alaska, United States, is the second largest oil field in North America by area. It produces approximately of oil and is estimated to have of recoverable oil reserves. It ...

, the second largest oil field in North America, is centered about west of Prudhoe Bay. Discovered in 1969, it covers about .

References

Rivers of North Slope Borough, Alaska Rivers of Alaska {{Alaska-river-stub

See also

References