| Anabar | |
| Other Name: | Анабар / Анаабыр |
| Map: | Anabar.png |
| Pushpin Map: | Russia Sakha Republic#Russia |
| Pushpin Map Caption: | Location of the mouth |
| Source1: | Confluence of Malaya Kuonamka and Bolshaya Kuonamka |
| Source1 Location: | Olenyoksky District, Sakha |
| Source1 Coordinates: | 70.7711°N 113.3369°W |
| Source1 Elevation: | 16m (52feet) |
| Mouth: | Laptev Sea |
| Mouth Location: | Anabar Bay |
| Mouth Coordinates: | 73.2052°N 113.5567°W |
| Mouth Elevation: | 0m (00feet) |
| Subdivision Type1: | Country |
| Subdivision Name1: | Russia |
| Length: | 380km (240miles) (939km (583miles)) |
| Discharge1 Avg: | 498m3/s |
| Basin Size: | 100000km2 |
The Anabar (Russian: Анабар|r=Anabar, in its upper course: Большая Куонамка Bolshaya Kuonamka; sah|Анаабыр|translit=Anaabır) is a river in Sakha, Russia. It is long (939km (583miles) counting the 559km (347miles) long Bolshaya Kuonamka ("Big Kuonamka") stretch of its upper course) and has a drainage basin of .
The Anabar is formed at the confluence of the Malaya Kuonamka and Bolshaya Kuonamka at the edge of the North Siberian Lowland. The length of the Anabar proper is 380km (240miles). The two rivers forming it have their sources in the northeastern part of the Anabar Plateau, part of the Central Siberian Plateau. There are many lakes in its basin.
The Anabar basin is located between rivers Khatanga and Olenyok. The mouth of the river is in the Anabar Bay. Its mean annual discharge is 564m3/s, concentrated heavily in early summer when the ice that covers the river for most of the year thaws. The Uele river flows into the Laptev Sea close to the mouth of the Anabar, but it is not its tributary.[1]
Its main tributaries are the 115km (71miles) long Mayat, the 342km (213miles) long Udya (Удьа), the 453km (281miles) long Malaya Kuonamka ("Little Kuonamka") and the 108km (67miles) long Ebelyakh on the right, as well as the 262km (163miles) long Suolama, the 139km (86miles) long Kharabyl and the 103km (64miles) long Konnies on the left.[2]
Historically Evenks have inhabited the basin of the Anabar River.[3] Vasiliy Sychev was the first Russian to reach the river in 1643.[4] [5]
In present times the basin of the Anabar river is notable as the location of the largest concentration of diamond deposits in the world outside of Africa and Australia. These deposits made the Soviet Union into one of the world's largest producers of diamonds, and remain the economic mainstay of the area.