In which city is the Onon River, the characteristics of the Onon River basin

There are two sources in the upper reaches: the northern source of the Shilka River (the upper source of the Onen River) exits the eastern foothills of Kent Mountain in northern Mongolia; The southern source of the Erguna River and the upper source are divided into 3 branches, one of which is the Hailar River, which originates at the foot of the Guliya Mountains on the west side of the Daxing'an Mountains in the Inner Mongolia Autonomous Region of China. The two sources of the south and north are called Heilongjiang after the confluence of Luoguhe Village in the west of the Mohe River.

It meanders eastward, receiving large tributaries such as the Jieya River, the Burea River, the Songhua River, and the Ussuri River, and finally empties into the Sea of Okhotsk in Russia. The total length is 4,370 kilometers (from the upper source to the estuary), and the basin area is 10,000 square kilometers. In China, the length of the river is 3,474 kilometers, and the basin area is about 10,000 square kilometers, accounting for the basin.

From the confluence of the north and south sources of the Heilongjiang River to the confluence of the Heilongjiang River and the Ussuri River in Khabarovsk (Boli), Russia, it is the boundary river between China and Russia. From Luoguhe Village to Heihe City, it is 900 kilometers long; Heihe City to the mouth of the Ussuri River is the middle reach, with a length of 950 kilometers; The Ussuri River is downstream below the mouth of the Ussuri River, with a length of 970 km. The Heilongjiang River basin is rich in water.

The annual runoff of the basin is 346.5 billion cubic meters. The seasonal distribution of precipitation is uneven, and the precipitation in the warm season in April and October accounts for 90 93 of the year, of which 60 70 in June and August. In November, the winter half of the dry season begins, and the precipitation in the winter half of the year falls in the form of snow.

The thickness of the snow on the surface is generally 20 50 cm, and when the temperature rises in spring, the snow can melt and replenish the river, and the river water ** forms a spring flood. Thus, the seasonal distribution of river runoff is: 10 27 in spring, 50 in summer, 20 30 in autumn, and less than 4 in winter.

The interannual variation of runoff in the main stream is also large, with runoff in wet years being about times that of dry years. The theoretical reserves of water resources are 11.53 million kilowatts, of which 6.6 million kilowatts are in the Songhua River and 3.04 million kilowatts in the main stream. It is possible to develop 312 power stations with an installed capacity of more than 500 kilowatts of hydropower resources, with an installed capacity of 10.96 million kilowatts and an annual power generation capacity of 34.3 billion kilowatt hours.

The river is wide and deep, and the main stream is from the Ussuri River below the Mohe River and below the Xingkai Lake to be passable by steamers. Ice ages are as long as 6 months. The basin is rich in forests, gold, coal and other mineral resources, and produces fish, especially salmon and mackerel.

Onen River. It is also known as the "River of Difficulty". It originates in the eastern foothills of Kent Mountain in northeastern Mongolia, flows north through the Shilka River in Russia, and flows into the Heilongjiang River.

It has a total length of 808 kilometers (298 kilometers in Mongolia) and a basin area of 90,000 square kilometers (about 30,000 square kilometers in Mongolia). The water depth is 218 cm during the flood season and 114 cm during the dry season. It freezes from November to the end of April.

It flows through the grassland area, is not navigable, and is used for irrigation and industrial water.

The Onen River and the Shilka River are the northern sources of the Heilongjiang River, and the Erguna River is the southern source of the Heilongjiang River.

The Onen River is also known as the "Difficult River". It originates in the eastern part of Mongolia, and flows north through the Shilka River in Russia before flowing into the Heilongjiang River. The total length is 808 kilometers (298 kilometers in Mongolia), and the basin area is 90,000 square kilometers (about 30,000 square kilometers in Mongolia).

The water depth is 218 cm during the flood season and 114 cm during the dry season. From November to the end of April, the smile freezes.

The Onen River (Cyrillic alphabet: Russian: known as Heishui in ancient times), is a river mainly located in Mongolia and Russia, belonging to the Heilongjiang River system.

The river originates in the eastern foothills of the Little Kent Mountains in Mongolia and is also the birthplace of the Mongolian tribes. The basin covers an area of 94,000 square kilometers and joins the Yinguoda River to form the Shilka River.

It flows through the grassland and is not navigable, and is used for irrigation and industrial water. The Onen River and the Shilena Potato River are the northern bend of the Heilongjiang River, and the Erguna River is the southern source of the Heilongjiang River.