Bulgan River
The rivers Bulgan, Uench and Bodonch, with their sources in the southernmost face of the Mongol Altai Mountains, are included in the blind drainage basin of the Central Asia. Other rivers including the Buyant, Khovd, Tsenkher, Sagsai and Sogoog with its tributary rivers, which rise from the north of the Mongol Altai Mountains, are included in the Central Asian blind drainage basin.
Khovd River
It takes its source from the northern side of the Mongol Altai Mountains and runs into the Lakes Khoton and Khorgon. Its largest tributaries are Tsagaan Khovd and Khar Khovd and it is 593 kilometres long.
Zavkhan River
It takes its source from the southern face of the Otgontenger Mountain the highest peak of the Khangai Mountain range. The river begins to flow from the confluence of rivers Buyant and Shar Us. The Zavkhan flows by the western side of the Khangai Mountain and flows into the Lake Airag, which is connected with the Lake Khyargas. Its 808 kilometres long and provides most of the tributary flow of the Lake Khyargas.
