Karun

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Karun

(käro͞on`), river, c.450 mi (720 km) long, rising in the Zagros Mts., W Iran, and flowing S to the Shatt al Arab on the Iraqi border. The Karun is navigable to Ahvaz for shallow draft vessels; rapids prevent further upstream passage except during high water in April and May. The river was opened to foreign trade in 1888; but since the construction of a rail line during World War II between the river port of Khorramshahr, Ahvaz, and the main Iranian system, this route has lost importance. At Shushtar there is a dam designed to irrigate an area of 500 sq mi (1,295 sq km); it is surmounted by a magnificent bridge (no longer in use), probably built in the 3d cent. for Shapur I of Persia by captured Roman soldiers.
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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Karun

 

a river in Iran, a left tributary of the river Shatt al-Arab. Length, 820 km (according to other data, 850 km); basin area, 60,000 sq km. It rises on the slopes of the Zard Kuh massif (Zagros Mountains). In its upper and middle course it flows through canyons and crosses intermontane basins; in its lower course it flows through the Mesopotamian Lowland. The river is characterized by spring high water caused by meltwaters; there are summer flash floods, and low water is in fall and winter. The average water discharge in the lower course is 770 cu m per sec. Part of the discharge in the upper course is channeled through tunnels to irrigate the Isfahan oasis; in the lower course it is used to irrigate the Mesopotamian Lowland. The Karun is navigable up to the city of Ahvaz, where there are rapids, and above that until the city of Shushtar.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Azna study area with an area of 2188 km2 is one of the study areas of Karun River basin and is located in the East Lorestan province.
"The Iranian side has confirmed to me by phone that they have not blocked off the Karun River from Basra and the Shatt al-Arab," Ambassador Mohammed Majeed al-Sheikh told Aswat al-Iraq news agency.
The last time Japan provided Iran with yen-denominated loans, being granted at below market rates and over a longer period than normal, was in May 1993, when it extended 38.6 billion yen as the first tranche of financing for a dam project in the Karun River in southern Iran.
The last time Japan provided Iran with yen loans was in May 1993 when it extended 38.6 billion yen as the first stage of financing for a dam project in the Karun River in southern Iran.
Dehqani said on Saturday that historic flash floods that inundated parts of the oil-rich province of Khuzestan in Southwest of the country over the past days had not caused the crude production in joint fields with Iraq, located to the West of the Karun River, to stop or slow down.
Frustrated Basra people are putting the onus of the pollution and lack of drinking water in their city on Iran which stopped the water flow from the Karun River, the longest Iranian river, into the Shatt Al-Arab River in Iraq and instead are allegedly pumping its polluted water in it.
Razdar and colleagues [8]to assess water quality of Anzali wetland and Hoshmand and colleagues [9] by studying water quality of the Karun River in the Khuzestan province used NSFWQI indicator that water quality in medium range reported.
I wore mine while hiking in the Zagros mountains, paddling on the Karun river and cycling to the city of Ahvaz
A hardy adventurer from Northern Ireland has followed the course of the Karun River, Iran's longest, from its source to the sea by foot, bike and kayak.
The last time Japan provided Iran with yen loans was in May 1993 when it extended 38.6 billion yen as the first tranche of financing for a dam project in the Karun River in southern Iran.
Karun River is the only river in Iran capable of sailing.