NSW Premier Gladys Berejiklian has confirmed two people have died in bushfires that devastated the village of Cobargo earlier today.

NSW Police Deputy Commissioner Gary Worboy confirmed the two people who died were a father and son trying to defend their home from the Badja Forest Rd fire.

"The two men at Cobargo are residents of Cobargo. A father and son, as we believe. Very tragic set of circumstances. Obviously trying to do their best with the fire as it came through in the early hours of the morning," he said.

Mr Worboy said police were still trying to make their way to a home west of Narooma where a man was also defending his home.

"Unfortunately we think that the news there will not be good either," he said.

RFS Commissioner Shane Fitzsimmons earlier said there were fears for two people missing but the situation had been too dangerous for police to investigate.

Photos of the main street of Cobargo, which used to be lined by historic, turn-of-the-century buildings, appear to show it completely razed.

There are reports the local school has been destroyed as well as disinfection infrastructure within the Brogo River water supply catchment.

Residents in Quaama, Cobargo, Bermagui, Beauty Point, Fairhaven, Wallaga Lake, Wallaga Lake Heights, Wallaga Lake Koori Village, Akolele are advised to boil their water.

Cobargo, to the west of Bermagui, has been on fire for much of today, with multiple buildings on the main street on fire and RFS crews struggling to save properties.

The town was evacuated earlier today.
The fire affecting Cobargo is the Badja Forest Rd fire near Cooma, which is rapidly moving eastward and was predicted to be among the blazes to expand most significantly, along with a fire in the Snowy Valleys. Almost 100 blazes continue to burn across NSW, with dozens uncontained and eight today at “emergency” level.