| Tes River | |||||
| Name Other: | Tuvinian: Тес-Хем, Tes Xem | ||||
| Subdivision Type1: | Country | ||||
| Subdivision Name1: | Mongolia, Russia | ||||
| Subdivision Type2: | Mongolian Aimags | ||||
| Subdivision Name2: | Khövsgöl, Zavkhan | ||||
| Subdivision Type3: | Russian Region | ||||
| Subdivision Name3: | Tuva | ||||
| Length: | 568km (353miles) | ||||
| Source1: | Shavar Türüü | ||||
| Source1 Location: | Bulnain Nuruu, Tsagaan-Uul, Mongolia | ||||
| Mouth: | Uvs Nuur | ||||
| Mouth Location: | Tes, Uvs, Mongolia | ||||
| Mouth Coordinates: | 50.4764°N 93.0661°W | ||||
| Mouth Elevation: | 759m (2,490feet) | ||||
| Basin Size: | 33368km2 | ||||
| Tributaries Right: | Shavar River, Tsereg River, Khachig River, Erzin River | ||||
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The Tes River (Mongolian: Тэс гол; Tuvinian: Тес-Хем;) is a river in northwestern Mongolia and southern Tuva, Russia. Its spring is in Tsagaan-Uul sum in Khövsgöl. The river then flows through Zavkhan (Mongolia), Tuva (Russia), next back to Uvs (Mongolia) before entering Uvs Lake. While in Khövsgöl, there is a wooden bridge near Tsetserleg and a concrete bridge near Bayantes on the road to Kyzyl, Russia.
The Tes River is primary source of the Uvs Lake. A large section of the river, from where it enters the Uvs Province to its mound in the lake, is included in the Uvs Nuur Basin UNESCO World Heritage Site.[1]