| Tumara Тумара | |
| Source1: | Verkhoyansk Range |
| Source1 Coordinates: | 64.8872°N 130.46°W |
| Mouth: | Aldan River |
| Mouth Coordinates: | 63.4594°N 129.5803°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Russian Federation |
| Length: | 236km (147miles) |
| Discharge1 Avg: | 67m3/s |
| Basin Size: | 10300km2 |
| Pushpin Map: | Russia Sakha Republic |
| Pushpin Map Caption: | Mouth location in Yakutia, Russia |
The Tumara (Russian: Тумара; Yakut: Тумара) is a river in the Sakha Republic (Yakutia), Russia, a right tributary of the Aldan, part of the Lena basin. It flows across an area that is largely desolate, except for Segyan-Kyuyol village.[1] The Tumara has a length of 236km (147miles) and a drainage basin area of 10300km2. The river is a destination for rafting.
The name of the river comes from the Yakut language tumara, meaning "tundra".[2]
The Tumara originates in the slopes of the southwestern Verkhoyansk Range. In the upper section of its course the river displays all the characteristics of a mountain river, flowing roughly southwards within a deep and narrow valley bound by steep slopes that cuts across the Kelter (Көлтөр) and Munni (Мунний) ranges.
After leaving the mountainous area in its middle course the Tumara flows through a floodplain and forms meanders, still following a generally southward direction. In its lower course the river expands and the floodplain becomes wider, its riverbed dividing into slowly-flowing arms. Finally the Tumara meets the right bank of the Aldan River, a little upstream from Batamay and downstream from river Kele.[3]
Its longest tributaries are the 110km (70miles) long Nuora (right) and the 78km (48miles) long Nyorkyunde.[4]
