The Merrica River is an intermediate intermittently closed saline coastal lagoon[2] or perennial river[3] located in the South Coast region of New South Wales, Australia.

Merrica River rises on the northern slopes of Mount Nadgee within the Nadgee Nature Reserve; located about 9 kilometres (5.6 mi) southwest of Tumbledown Mountain.

The river flows generally northeast before reaching its mouth with the Tasman Sea of the South Pacific Ocean, emptying into Disaster Bay.

[1] The catchment area of the river is 60.5 square kilometres (23.4 sq mi) with a volume of 48.5 megalitres (1.71×10^6 cu ft) over a surface area of 0.1 square kilometres (0.039 sq mi), at an average depth of 0.4 metres (1 ft 4 in).

This New South Wales river or creek related article is a stub.