The Toshkan (, ) is a river in the

Tien Shan The Tian Shan, also known as the Tengri Tagh or Tengir-Too, meaning the "Mountains of God/Heaven", is a large system of mountain ranges in Central Asia. The highest peak is Jengish Chokusu at high and located in Kyrgyzstan. Its lowest point is ...

mountains in the border area between

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

and

Kyrgyzstan Kyrgyzstan, officially the Kyrgyz Republic, is a landlocked country in Central Asia lying in the Tian Shan and Pamir Mountains, Pamir mountain ranges. Bishkek is the Capital city, capital and List of cities in Kyrgyzstan, largest city. Kyrgyz ...

. It is long, and has a

drainage basin A drainage basin is an area of land in which all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, ...

of in Kyrgyzstan. The Toshkan has its sources in the At-Bashy Range and Kakshaal Too south of the Kyrgyzstani city of

Naryn Naryn ( ; ) is the regional administrative center of Naryn Region in central Kyrgyzstan. Its area is , and its estimated population was 41,178 as of January 2021. The town was established as a fortress on the caravan route in 1868. It is situated ...

. In its uppermost course, upstream of the confluences with the rivers Müdürum and Kökkyya, it is called ''Aksay''; from these confluences to the border with China, it is called ''Kakshaal''. It then flows towards the east and into the

Xinjiang Xinjiang,; , SASM/GNC romanization, SASM/GNC: Chinese postal romanization, previously romanized as Sinkiang, officially the Xinjiang Uygur Autonomous Region (XUAR), is an Autonomous regions of China, autonomous region of the China, People' ...

province of China. It continues east, running parallel to the Tien Shan mountains, until its confluence with the Aksu River near the city Aksu. The Toshkan is the largest tributary of the Aksu.

References

Rivers of Xinjiang Rivers of Kyrgyzstan International rivers of Asia {{Kyrgyzstan-river-stub