Course and features
The Towamba River rises near Coolangubra Mountain, below Mount Marshall on the eastern slopes of the South Coast Range, part of the Great Dividing Range, approximately 9 kilometres (5.6 mi) north of Coolangubra Mountain. The river flows generally southeast and then northeast, joined by twelve tributaries including the Mataganah Creek and Wog Wog River, before reaching its mouth, emptying into Nullica Bay, within Twofold Bay, and spilling into the Tasman Sea of the South Pacific Ocean, east of Boydtown. The river descends 533 metres (1,749 ft) over its 86 kilometres (53 mi) course.
The catchment area of the river is 1,026 square kilometres (396 sq mi) with a volume of 2,050 megalitres (72×106 cu ft) over a surface area of 2.0 square kilometres (0.77 sq mi), at an average depth of 1.1 metres (3 ft 7 in).
At the locality of Kiah, the Princes Highway crosses the Towamba River.
- Towamba River bridge, New Buildings
- List of rivers of Australia
- List of rivers in New South Wales (L-Z)
- Rivers of New South Wales
- "Towamba River". Geographical Names Register (GNR) of NSW. Geographical Names Board of New South Wales. Retrieved 1 June 2013.
- "Map of Towamba River, NSW". Bonzle Digital Atlas of Australia. Retrieved 1 June 2013.
- Roy, P. S; Williams, R. J; Jones, A. R; Yassini, I; et al. (2001). "Structure and Function of South-east Australian Estuaries". Estuarine, Coastal and Shelf Science. 53: 351–384. doi:10.1006/ecss.2001.0796.
- "Towamba River". Coastal and floodplain management: Coastal zone management: Estuaries of NSW. NSW Environment and Heritage. 27 April 2012. Retrieved 1 June 2013.
- "Towamba & Genoa catchment" (map). Office of Environment and Heritage. Government of New South Wales.