The search continues for a woman who fell from a waterfall in the NSW Southern Highlands.

The search resumed on Monday with a NSW Police spokesman conceding rescue crews were now most likely searching for a body.

The 21-year-old woman was hiking near Belmore Falls in Robertson when she slipped and fell about 100 metres into the water below.

Emergency services responded to reports she had fallen into the water just after 1pm, a NSW Police spokesman said.

Police and NSW State Emergency Service crews were forced to call off the search on Sunday afternoon because of poor weather conditions and fading light.

The waterfall, which plunges about 77 to 130 metres across three drops, is a popular attraction for tourists.

NSW National Parks and Wildlife has closed the falls until Wednesday to assist emergency services.

Jeisson Leon, a 28-year-old Colombian man, died in September last year after falling from a cliff while abseiling at Belmore Falls.

Authorities have urged travellers not to attempt hiking to the base of the Belmore and Gerringong waterfalls and closed tracks to the base of both waterfalls.

– AAP