|Name origin: Aboriginal: valley of plenty|
|State||New South Wales|
|Regions||South Eastern Highlands (IBRA), Monaro|
|Part of||Murrumbidgee River, Murray–Darling basin|
|- left||Kybeyan River|
|- right||Big Badja River, Cooma Creek|
|- location||east of Nimmitabel|
|- elevation||1,070 m (3,510 ft)|
|- location||north of Cooma|
|- elevation||706 m (2,316 ft)|
|Length||94 km (58 mi)|
The river rises on the northern slopes of the Great Dividing Range, about 12 kilometres (7.5 mi) east of the village of Nimmitabel, and flows generally north and west, joined by eight tributaries including the Kybeyan and Big Badja rivers before reaching its confluence with the Murrumbidgee River, south of Bredbo and about 18 kilometres (11 mi) north of Cooma; dropping 367 metres (1,204 ft) over its course of 93 kilometres (58 mi).
The river is a diverse ecosystem rich with many different animal species such as the uncommonly seen Wanderer's Kingfisher and the Kiora frog. Its native freshwater fish fauna however has unfortunately been entirely replaced by introduced trout species, now replaced by the introduced European carp species; a common situation in south-east Australia.
Alluvial gold was discovered in and along the river in 1858, with the diggings worked until 1868.
- "Numeralla River". Geographical Names Register (GNR) of NSW. Geographical Names Board of New South Wales. Retrieved 13 January 2013.
- "Numeralla". Geographical Names Register (GNR) of NSW. Geographical Names Board of New South Wales. Retrieved 13 January 2013.
- "Map of Numeralla River, ACT". Bonzle Digital Atlas of Australia. Retrieved 13 January 2013.
- "History". Numeralla and District Activities Inc. 2010. Retrieved 13 January 2013.