| Sobat River | |
| Subdivision Type1: | Country |
| Subdivision Name1: | South Sudan |
| Subdivision Type2: | State |
| Subdivision Name2: | Jonglei, Upper Nile (state) |
| Length: | 354km (220miles)[1] |
| Discharge1 Location: | Hillet Doleib |
| Discharge1 Min: | 99m3/s |
| Discharge1 Avg: | 412m3/s |
| Discharge1 Max: | 680m3/s |
| Source1: | Baro River |
| Source1 Location: | Dibdib, Ethiopia |
| Source1 Elevation: | 2367m (7,766feet) |
| Source2: | Pibor River |
| Source2 Location: | Pibor Post, Greater Pibor |
| Source2 Coordinates: | 6.7951°N 33.1519°W |
| Source2 Elevation: | 418m (1,371feet) |
| Source Confluence Location: | Ajungmir, Jonglei |
| Source Confluence Coordinates: | 8.4361°N 33.2186°W |
| Source Confluence Elevation: | 404m (1,325feet) |
| Mouth: | White Nile |
| Mouth Location: | Againg, Upper Nile |
| Mouth Coordinates: | 9.3672°N 31.5492°W |
| Mouth Elevation: | 398m (1,306feet) |
| Progression: | White Nile → Nile → Mediterranean Sea |
| River System: | Nile |
| Basin Size: | 225000km2 |
| Discharge2 Location: | mouth |
| Discharge2 Avg: | 437m3/s |
The Sobat River is a river of the Greater Upper Nile region in northeastern South Sudan, Africa. It is the most southerly of the great eastern tributaries of the White Nile, before the confluence with the Blue Nile.
The Sobat River is formed by the confluence of the west-flowing Baro River and the north-flowing Pibor River, on the border with Ethiopia. The river enters the White Nile at Doleib Hill, near the city of Malakal in Upper Nile State.
When in flood the Sobat River produces an enormous discharge carrying a white sediment, which gives the White Nile its name.[1]
The Sobat and its tributaries drain a watershed approximately 225000km2 in size. The river's mean annual discharge is 412 m³/s (14,550 ft³/s).[2]