The Hunter was mostly spared from the intense rainfall that fell into already soaked catchments across the southern part of the state on Thursday.
The southern end of the Hunter was included in a severe weather warning issued by the Bureau of Meteorology for Thursday, which remained in place at 5pm.
The Central Coast copped significant rainfall in the afternoon - recording more than 31mm of rain in a two and a half hour period.
Cooranbong recorded 25.6mm of rain between 9am and 5pm, while Mangrove Mountain had 23mm and Newcastle 13.4mm.
The Hunter was taken off flood watch during the day, however the State Emergency Service remained on alert for flash flooding as rain continued.
The Hunter's water storage level was sitting at 99.9 per cent full on Thursday with Tomago Sandbeds the only of the four water sources not sitting at completely topped up. More rain is predicted for the region on Friday and into the weekend.