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Ili River

Ili River is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Ili River rather than just read about it. In short: The Ili River is a river in northwestern China and southeastern Kazakhstan. It flows from the Ili Kazakh Autonomous Prefecture of the Xinjiang Uighur Autonomous Region to the Almaty Region in Kazakhstan.

Ili River — main illustration
Ili River — illustration

Key takeaways

  • Ili River belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Ili River to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Ili River from memory before moving on to harder problems.

Reference excerpt

The Ili River is a river in northwestern China and southeastern Kazakhstan. It flows from the Ili Kazakh Autonomous Prefecture of the Xinjiang Uighur Autonomous Region to the Almaty Region in Kazakhstan. It is 1,439 kilometres (894 mi) long (including its source river the Tekes), 815 kilometres (506 mi) of which is in Kazakhstan. The river originates from the Tekes and Künes rivers in Eastern Tian Shan. The Ili drains the basin between the Tian Shan and the Borohoro Mountains. Flowing into Lake Balkhash (in the endorheic Balkhash-Alakol Basin), the Ili forms a large delta with vast wetland regions of lakes, marshes and vegetation.

Name The river's name is usually taken to derive from Mongolian il (ил, "open, clear, obvious") in reference to its wide central valley. The river's name also means some Chinese characters like 漓江. It is also variously derived from Persian or Iranian terms meaning "big river" or "murky" in reference to the water's condition at the confluence of the Kunges and Tekes. Some Uyghur scholars derive it from Uyghur il ("hook") after the supposed similarity in the river's shape. Tourist websites sometimes claim the name descends from the Mongolian word ilansu, meaning "shimmering" or "sparkling". Mentions of Ili river can be traced back to the Mahmud al-Kashgari's dictionary of Turkic languages, the Dīwānu l-Luġat al-Turk (written in 1072–74). In the book, the author defines it in the following way: "Ili, the name of a river. Turkic tribes of Yaghma, Tokhsi and Chiglig live on its banks. Turkish countries regard the river as their Jayhoun (Amu Darya)."

Chinese region

The upper Ili Valley is separated from the Dzungarian Basin in the north by the Borohoro Mountains, and from the Tarim Basin in the south by the Tian Shan. This region was the stronghold of the Qing administration in Xinjiang in the late 18th and 19th centuries. It was occupied by Russia from 1871 to 1881 (from the Yaqub Beg rebellion until the Treaty of Saint Petersburg (1881)). Presently, the region forms part of Xinjiang's Ili Kazakh Autonomous Prefecture. The main city of the region, Yining (Kulja), is located on the northern side of the river (about 100 kilometres (62 mi) upstream from the international border). Until the early 1900s, the city was commonly known under the same name as the river, 伊犁 (Pinyin: Yīlí; Wade-Giles: Ili). Qapqal Xibe Autonomous County in located on the southern side, which is home to many of China's Xibe people (who resettled there in the 18th century as part of the Manchu Garrison). There are at least two dams on the Ili's tributary, the Kash River (喀什河), in Nilka County, at 43°51′40″N 82°50′52″E and 43°51′14″N 82°48′08″E. At least two dams have been constructed on the Ili's left tributary, the Tekes River, and the Qiapuqihai Hydropower Station (恰甫其海水电站) in Tokkuztara County (43°18′14″N 82°29′05″E). There is also another smaller dam at 43°23′41″N 82°29′20″E, on the border of Tokkuztara and Künes Counties.

Kazakh region

The Ili is the main watercourse of the Balkhash-Alakol Basin. The region of Kazakhstan partially drained by the Ili and its tributaries is known in Kazakh as Zhetysu ('Seven Rivers'). In Russian it is known as Semirechye (meaning the same). The Kapshagay Hydroelectric Power Plant was constructed between 1965 and 1970 near Kapchagay in the middle reaches of the Ili River. This currently comprises the Kapchagay Reservoir, an artificial 110 kilometres (70 mi) long lake north of Almaty. The Tamgaly-Tas, a protected site that comprises rock drawings, is located 20 kilometres (12 mi) downstream along the Ili River. The name Tamgaly in Kazakh means "painted" or "marked place", and Tas means "stone".

Ili Delta

The Ili River flows into the southeastern edge of Lake Balkhash, where it forms a large delta of about 8,000 square kilometres (3,100 mi2). The delta is situated between the Saryesik-Atyrau Desert and the Taukum Desert. An area of 9,766 km2 (3,771 sq mi) within the delta has been designated as a Ramsar Site. This site has 427 species of plants and 345 species of animals, including important populations of rare species (Dalmatian pelican, goitered gazelle, marbled polecat, white-headed duck, red-breasted goose, ship sturgeon, and others). The delta has also become popular amongst anglers for its wels catfish, which can grow up to over 300 lb (140 kg). The Ili river ranks third in Kazakhstan after the Irtysh river and the Ural river in terms of water content. The Government of Kazakhstan plans to join the three sanctuaries Balkash, Karoy and Kukan (situated in the delta) into one National Park. Until 1948, the delta was a refuge of the extinct Caspian tiger. An introduction of the Siberian tiger to the delta has been proposed on account that it is a genetically close relative of the Caspian tiger. A large population of wild boar, the main prey base of the Caspian tiger, can be still found in the delta. There is also a small population of roe deer. In the drier steppes to the south of the delta live saiga antelopes and goitered gazelles. Reintroduction of the Bactrian deer, another prey of the Caspian tiger, is currently under consideration. Another potential prey species considered to be reintroduced is the Asiatic wild ass.

Historical connections The Ili River treaty of 638 AD formalized the division of the Western Turkic Kaganate (552–638 AD) into the Nushibi and the Dulu. It also established the Ili River as the border between the two states. In the 21st century, increasing need for water in both China and Kazakhstan makes the management of the cross-border Ili River a topic of concern for environmentalists and politicians in Kazakhstan (who feel that their country may not get enough water flowing in from China any more). The amount of precipitation in summer reaches 150–250 cubic metres (5,300–8,800 cu ft).

Fishing

On the river, the most popular type of fishing is fishing of catfish, one of the largest aquatic predators, which may reach 5 meters (16 ft) in length and weigh up to 300 kilograms (660 lb). Smaller specimens are usually within 50–100 kilograms (110–220 lb).

Gallery

Tributaries The main tributaries of the Ili are, from source to mouth:

Tekes Künes Kash Khorgos Charyn, famous for its canyon Chilik Talgar Kaskelen Kurty

References

Footnotes

Citations

Bibliography

Или, река Семиречинской области (The Ili River), in Brockhaus and Efron Encyclopedic Dictionary

Illustrations

Ili River illustration
Ili River illustration
Ili River: Qing bases in the Ili region, ca. 1809. Note that the map is upside down, i.e. the north is at the bottom, and the east is on the left.
Qing bases in the Ili region, ca. 1809. Note that the map is upside down, i.e. the north is at the bottom, and the east is on the left.
Ili River: On the Kapchagay Reservoir
On the Kapchagay Reservoir
Ili River: Balkhash lake with Ili delta
Balkhash lake with Ili delta

Worked examples

Example 1 — a first encounter with Ili River

Start with the simplest possible case. Write down what Ili River claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Ili River before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Ili River ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Ili River

In research
Ili River appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Ili River in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Ili River is common in secondary-school and first-year university syllabi. It links to neighbouring topics Balkhash-Alakol Basin, Ili basin, International rivers of Asia, so understanding it makes those chapters shorter.
In everyday life
Look for Ili River outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Ili River in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Ili River means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Ili River out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Ili River in simple terms?

The Ili River is a river in northwestern China and southeastern Kazakhstan. It flows from the Ili Kazakh Autonomous Prefecture of the Xinjiang Uighur Autonomous Region to the Almaty Region in Kazakhstan.

Why does Ili River matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Ili River?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Ili River.

Tags

  • Balkhash-Alakol Basin
  • Ili basin
  • International rivers of Asia
  • Ramsar sites in Kazakhstan
  • Rivers of Kazakhstan
  • Rivers of Xinjiang
  • Siberian Tiger Re-population Project
  • Sites along the Silk Road
  • Tributaries of Lake Balkhash

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