In anticipation of a high tide in a mater of hours, a flood barrier has been installed at Foxton Beach to help contain the storm surge on Hartley St.
The barrier will prevent water flowing down the street.
Horowhenua District Council has been assisting with this and a traffic management plan will be in place to enable residents to reach their properties.
"The operation of the Moutoa floodgates in the Horowhenua district is still scheduled for around midnight tonight," Horizons emergency management controller Ged Shirley said.
He said 40-80mm of rain is forecast for the Tararua Ranges tonight, as well as pockets of short steady bursts of rain expected for parts of the Central Plateau and Manawatū district.