FLOODING fallout is due to keep many popular areas in Port Stephens shut for the long weekend, National Parks and Wildlife has confirmed.
Meanwhile, camping numbers have been capped on Nine Mile Beach in order to protect the fragile dune system.
A land slip and ongoing inundation has been branded the worst since 2012 at Stockton beach's Worimi Conservation Lands and Samurai beach.
Tomaree headland and its popular summit walk also remain off limits.
National Parks and Wildlife Hunter Coast area manager Andrew Bond said the conditions remained serious.
"We don't close beach access lightly, however sustained flooding means the beaches are impassable and a safety risk for visitors, so unfortunately will have to remain closed over the Easter holiday," Mr Bond said.
Large swells and high tides are expected over the weekend for the area.
The conditions could worsen in the middle of next week if a forecast east cost low forms off the NSW coast.
Worimi Conservation Lands board chair Jamie Tarrant said floodwater was as high as two metres, making all four-wheel drive tracks impassable.
"The beachfront has dangerous driving conditions with significant erosion, sharp drop offs, and large water sinkholes in dune swales which could easily trap vehicles," Mr Tarrant said.
"Protection of Worimi cultural sites is a priority for the board, with many sites becoming exposed by the flooding and associated sand movement currently being remediated.
"Several sites remain underwater and will need to be assessed once flooding subsides, and before vehicle access can be reopened."
The closure of the Worimi Conservation Lands is expected to result in many off-road and camping enthusiasts heading to Nine Mile Beach.
The number of campers and vehicles will be capped in an effort to protect the environment and prevent littering.
The Belmont Wetlands State Park has advised visitors intending to stay overnight to register for a camp site pass.
Camp sites will be restricted to 15 people.
All off-road vehicles will be required to be registered upon arrival.
