* Top rainfall figures (between Saturday 9am and Sunday 4am): Stonequarry Creek at Picton (159mm), Oakdale (143mm), Mongarlowe (128mm), Warragamba (128mm), Comboyne Public School (128mm)

* More than 4500 SES call-outs since Thursday, 750 on Saturday night

* Evacuation orders for multiple towns near the Hawkesbury River including Pitt Town Bottoms, Pitt Town North, Cornwallis, North Richmond, Grono's Point, Freemans Reach and Agnes Banks

* Evacuation orders for parts of regional NSW towns including Kempsey, Port Macquarie, Wauchope, Macksville, Laurieton, Taree and Wingham

* The Warragamba Dam - Sydney's main water source - has spilled over, causing river levels to rise along the Nepean and Hawkesbury

* The federal government's natural disaster arrangements have been activated for a large stretch of NSW from the Central Coast to Tenterfield

* Multiple roads in Greater Sydney closed due to flooding, including: Windsor Bridge, Wisemans Ferry Road, Pitt Town Road, Bells Line of Road at Richmond, Springwood Road at Yarramundi, Wilberforce Road, The Northern Road at Penrith and Wakehurst Parkway on the northern beaches

* Multiple roads in regional NSW closed, including: The Pacific Highway from Coopernook to Glenthorne, multiple points of the Oxley Highway, Giinagay Way between Warrell Creek and Nambucca Heads, Jenolan Caves Road at Hampton and multiple points of the Illawarra Highway

* Forecast: Heavy falls will continue across NSW until at least Wednesday, including warnings that flash flooding may endure

* The SES admits it will be working beyond Easter (April 4) on the post-flood clean up effort in NSW and restoration of key services

* A bodyboarder in his 60s who disappeared off the Coffs Harbour coast on Saturday afternoon remains missing, with crews searching for him.

Australian Associated Press