|State||New South Wales|
|Region||South Eastern Highlands (IBRA), Monaro|
|Source||South Coast Range, Great Dividing Range|
|⁃ location||near Brown Mountain|
|⁃ coordinates||36°39′S 149°25′E|
|⁃ elevation||954 m (3,130 ft)|
|Mouth||confluence with the Bemboka River|
|near Kallarney, Snowy Mountains Highway|
|224 m (735 ft)|
|Length||8.2 km (5.1 mi)|
|River system||Bega River|
Course and features
The Nunnock River rises below Bull Mountain in the South Coast Range, that is part of the Great Dividing Range, about 3 kilometres (1.9 mi) east of Brown Mountain; and flows generally southeast and northeast before reaching its confluence with the Bemboka River near the locale of Kallarney, adjacent to the Snowy Mountains Highway, approximately 6 kilometres (3.7 mi) west by north of Bemboka. The river descends 729 metres (2,392 ft) over its 8.2 kilometres (5.1 mi) course.
- "Towamba & Genoa catchment" (map). Office of Environment and Heritage. Government of New South Wales.