The Chalumna River (Xhosa: Tyolomnqa) is a river in the Eastern Cape, South Africa. It is approximately 78 km long, forming at the confluence of two small rivers, the Qugwala in the West and the Mtyolo in the East. It empties into the Indian Ocean through an estuary near Kayser's Beach.
|Province||Eastern Cape Province|
|• location||Eastern Cape|
|Source confluence||Qugwala River (W)|
Mtyolo River (E)
|Near Kayser's Beach|
|0 m (0 ft)|
|Length||78 km (48 mi)|
|Basin size||441 km2 (170 sq mi)|
Its catchment area of 441 km2 makes it one of the smallest river basins on South Africa's eastern coast. Its tributaries are Nyatyora, Nxwashu, Quru and Mpintso on the left and Rode, Twecu and Tsaba on the right. Its mouth is located about 45 km south west of the Buffalo Estuary at East London. The African longfin eel (Anguilla mossambica) is common in its waters.