Widespread rainfall in the region during the weekend caused flash flooding in some areas with 259.4 millimetres of rain was recorded in Katoomba, including 193.4mm on Sunday alone.

Heavy rain not only forced the immediate closure of the Blue Mountains train line, but walking and cycling tracks have also been closed.

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The Charles Darwin Walk at Wentworth Falls has been closed due to flood damage and associated hazards.

While the Leura Cascades, tracks and picnic area are also closed until further notice.

"Prince Henry Cliff Walk, from Echo Point to Gordon Falls, is open, however visitors are advised that track conditions have changed as a result of high rainfall, storms and flooding," Blue Mountains City Council has advised.

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"Infrastructure has been damaged, tracks may be slippery and wet.

"Minor flood debris may obstruct tracks and trip hazards encountered."

In addition, Cliff Drive, between Merriwa Street in Katoomba and Jersey Avenue in Leura is also closed.

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These closures are in addition to those caused by recent bushfires in the area that left significant hazards and damaged infrastructure in council reserves.

As a result of the fires, the following closures are still in place:

Mount Victoria/Mount York

Blackheath

Mount Wilson

"These areas will remain closed until they are safe for the public to re-enter," council said.

"It's very important to stay out of burned bushland areas as there are a range of serious dangers and hazards.

"Trees damaged by fire may be dangerous and fall down or drop branches and limbs, and structures such as bridges, steps and safety railings may also be damaged and unsafe."

Council continues to work on the assessment and 'making-safe' of roads and reserves, which must occur before these areas can be re-opened.

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