by Guest / 11.18.2018 / 119
Places where the river runs: Bulgan soum of Arkhangai province, Bat Ulzii, Khujirt, Kharkhorin, and Khashaat, Ugii nuur, Ulziit soums of Arkhangai province and Saikhan, Orkhon Orkhontuul soums of Bulgan province.
Source of the river: N 47°58', E 101°22'
End of the river: N 50°15', E 106°08'
Length of the river: 1124 km
The Orkhon River, longest river in Mongolia, begins at the state worshipped mountain Suvraga Khairkhan in the Khangai Range. The drainage basin of the river is 132835 sq km. The river is 10-60 m wide to begin with but it becomes 120-150m around the end and the speed of the river flow decreases. On averagely it is 0.5-1.5 m deep but becomes up to 4 m in some places. There are some rapids of 0.5 m in height. Many bigger and smaller rivers flow into the Orkhon: those longer than 100 km are the Tamir, Khugshin Orkhon, Tuul, Kharaa, Eruu and Shar rivers. The Orkhon has many species of fish like the pike, Siberian sturgeon, taimen, Asian common asp, perch, Siberian grayling, roach, Siberian dace, silurus, carp and lake-layer. There are many rocks and boulders around the river as well as some waterfalls like a small waterfall with 4-5 m height and the Ulaan River waterfall - biggest in Mongolia at a height of 20 m. Khan Bayan and Togoo Khairkhan extinct volcanoes are in the south of the Orkhon River and basalt surfaces from the volcanoes cover more than 100 km of an area in the Orkhon River valley. There are many natural sceneries like Uurtiin Tohoi and Uuld red rocks as well as some popular mineral springs like Uurt, Mogoit and Khujirt. In 1996, UNESCO registered some historical sites in Orkhon River valley as a World Heritage Site. It includes Erdene Zuu monastery, ruins of Khar Khorum city, Khar balgas, Khushuu Tsaidam and Tuvkhun Monastery. In addition, a lot of historical memorials have remained in the Orkhon River valley such as memorials in Moiltiin Am, ancient city ruins in Tsant, deer stones in Seeriin Adag, man stones in Nariin Khuremt, ancient city ruins in Doit, Mongolian tombs in Baga Artsat, tombs in Maamuu hill, rock paintings around the beginning of the Orkhon River, deer stones of Orkhon, rock paintings in west Mogoit and Paleolithic ruins in Orkhon. The Orkhon River Valley has been protected since 2006 as a National Park.