The Amu Darya is a major river in Central Asia and Afghanistan. Rising in the Pamir Mountains, north of the Hindu Kush, the Amu Darya is formed by the confluence of the Vakhsh and Panj rivers, in the Tigrovaya Balka Nature Reserve on the border between Afghanistan and Tajikistan, and flows from there north-westwards into the southern remnants of the Aral Sea. In its upper course, the river forms part of Afghanistan's northern border with Tajikistan, Uzbekistan, and Turkmenistan. In ancient history, the river was regarded as the boundary of Greater Iran with "Turan", which roughly corresponded to present-day Central Asia.
Tajikistan is nestled between Kyrgyzstan and Uzbekistan to the north and west, China to the east, and Afghanistan to the south. Mountains cover 93 percent of Tajikistan's surface area. The two principal ranges, the Pamir Mountains and the Alay Mountains, give rise to many glacier-fed streams and rivers, which have been used to irrigate farmlands since ancient times. Central Asia's other major mountain range, the Tian Shan, skirts northern Tajikistan. Mountainous terrain separates Tajikistan's two population centers, which are in the lowlands of the southern and northern sections of the country. Especially in areas of intensive agricultural and industrial activity, the Soviet Union's natural resource utilization policies left independent Tajikistan with a legacy of environmental problems.
Uzbekistan is a country of Central Asia, located north of Turkmenistan and Afghanistan. With an area of 447,000 square kilometers, Uzbekistan stretches 1,425 km (885 mi) from west to east and 930 km (580 mi) from north to south. Bordering Turkmenistan to the southwest, Kazakhstan to the north, and Tajikistan and Kyrgyzstan to the south and east.
The Aral Sea was an endorheic lake lying between Kazakhstan in the north and Uzbekistan in the south which began shrinking in the 1960s and had largely dried up by the 2010s. The name roughly translates as "Sea of Islands", referring to over 1,100 islands that had dotted its waters. In the Mongolic and Turkic languages aral means "island, archipelago". The Aral Sea drainage basin encompasses Uzbekistan and parts of Tajikistan, Turkmenistan, Kyrgyzstan, Kazakhstan, Afghanistan, and Iran.
The Syr Darya, historically known as the Jaxartes, is a river in Central Asia. The name, a borrowing from the Persian language, literally means Syr Sea or Syr River, and sometimes it is referred to in this way. It originates in the Tian Shan Mountains in Kyrgyzstan and eastern Uzbekistan and flows for 2,256.25 kilometres (1,401.97 mi) west and north-west through Uzbekistan and southern Kazakhstan to the northern remnants of the Aral Sea. It is the northern and eastern of the two main rivers in the endorheic basin of the Aral Sea, the other being the Amu Darya (Jayhun). In the Soviet era, extensive irrigation projects were constructed around both rivers, diverting their water into farmland and causing, during the post-Soviet era, the virtual disappearance of the Aral Sea, once the world's fourth-largest lake. The point at which the river flows from Tajikistan into Uzbekistan is, at 300 m (980 ft) above sea level, the lowest elevation in Tajikistan.
Karakalpakstan, officially the Republic of Karakalpakstan, is an autonomous republic within Uzbekistan. It occupies the whole northwestern end of Uzbekistan. The capital is Nukus. The Republic of Karakalpakstan has an area of 160,000 square kilometres (62,000 sq mi). Its territory covers the classical land of Khwarezm, which in classical Persian literature the area was known as Kāt (کات).
The Caspian tiger was a tiger from a specific population of the Panthera tigris tigris subspecies that was native to eastern Turkey, northern Iran, Mesopotamia, the Caucasus around the Caspian Sea, Central Asia to northern Afghanistan, and Xinjiang in western China. It inhabited sparse forests and riverine corridors in this region until the 1970s. This population was assessed as extinct in 2003.
The Karakalpaks or Qaraqalpaqs, are a Turkic ethnic group native to Karakalpakstan in Northwestern Uzbekistan. During the 18th century, they settled in the lower reaches of the Amu Darya and in the (former) delta of Amu Darya on the southern shore of the Aral Sea. The name "Karakalpak" comes from two words: "qara" meaning black and "qalpaq" meaning hat. The Karakalpaks number nearly 620,000 worldwide, out of which about 500,000 live in the Uzbek Republic of Karakalpakstan.
The North Aral Sea is the portion of the former Aral Sea that is fed by the Syr Darya River. It split from the South Aral Sea in 1987–1988 as water levels dropped due to river diversion for agriculture. The poorly built Dike Kokaral intended to contain the North Aral Sea and save its fisheries failed twice, but in 2005, the government of Kazakhstan was able to fund a more robust design. Since then, water levels have risen faster than expected and fish stocks have increased. Plans to build a second dike to increase water levels further were due to begin in 2010, but have so far not materialized.
The Sarygamysh Lake, also Sarykamysh or Sary-Kamysh, is a lake in Central Asia. It is about midway between the Caspian Sea and the Aral Sea. The northern quarter of the lake is in Uzbekistan and the rest Turkmenistan.
Kazakhstan, has serious environmental issues such as radiation from nuclear testing sites, the shrinking of the Aral sea, and desertification of former agricultural land. These issues are due in large part to Kazakhstan's years under the Soviet Union.
The Aydar Lake is part of the man-made Aydar-Arnasay system of lakes, which covers 4,000 square kilometres (1,500 mi2). This has 3 brackish water lakes, deep basins of the south-eastern Kyzyl Kum. The lakes are expansive reservoirs of Soviet planning.
Kangju was the Chinese name of an ancient kingdom in Central Asia which became for a couple of centuries the second greatest power in Transoxiana after the Yuezhi. Its people, the Kāng were an Indo-European semi-nomadic people probably identical to the Iranian Sogdians or other Iranian groups closely related to them, such as the Asii.
Pseudoscaphirhynchus is a genus of relatively small, highly threatened sturgeons that are restricted to the Aral Sea system, including the Amu Darya and Syr Darya river basins, in Central Asia.
The Amu Darya sturgeon or false shovelnose sturgeon is a critically endangered species of fish in the family Acipenseridae. It is found in Turkmenistan and Uzbekistan, and perhaps Afghanistan and Tajikistan. It inhabits quite shallow flowing waters that are turbid and muddy.
The South Aral Sea was a lake in the basin of the former Aral Sea which formed in 1987 when that body divided in two, due to diversion of river inflow for agriculture. In 2003, the South Aral Sea itself split into eastern and western basins, the Eastern Sea and the West Aral Sea, connected by a narrow channel that balanced surface levels but did not allow mixing, and in 2005 the North Aral Sea was dammed to prevent the collapse of its fisheries, cutting off the only remaining inflow to the southern lakes. In 2008, the Eastern Sea split again, and in May 2009 had almost completely dried out, leaving only the small permanent Barsakelmes Lake between the Northern and Western Seas and increasing the expanse of the Aralkum desert. In 2010, it was partially filled again by meltwater, and by 2014 was once again dry. The West Aral Sea has some replenishment from groundwater in the northwest, and so is likely to avoid desiccation.
The Uzboy was a distributary of the Amu Darya which flowed through the northwestern part of the Karakum Desert of Turkmenistan until the 17th century, when it abruptly dried up, eliminating the agricultural population that had thrived along its banks..
After irrigation projects diverted water from the Aral Sea it began to dry up and left behind salts, other minerals, and toxins in the soil. These not only contaminated the soil but also were picked up by winds and storms, and traveled to other areas, including over crop lands. This has led to increased health problems like respiratory diseases and cancers, among others. The change in the size of the Aral has also affected the local climate and resulted in increased occurrence and worsening of storms.
The Main Turkmen Canal was a large-scale irrigation project in the Turkmen Soviet Socialist Republic. The canal was intended to transport water from the Amu Darya river to Krasnovodsk, a city in Turkmenistan on the coast of the Caspian Sea. The canal was going to use the course of the ancient dry Uzboy River bed.
Jankent is a deserted town east of the Aral Sea in modern Kazakhstan. It is known from Arab writings of the 10th century AD as the capital of the steppe empire of the Oghuz Turks. Archaeological research has provided information about the appearance of the town and confirmed the date, but also points to earlier origins.