SHOALHAVEN SES has received numerous calls for help in the region since heavy rain began falling on Saturday evening.
The majority of calls were to houses with leaking roofs.
On Monday morning a tree blew down in East Nowra landing on a house and damaging a fence. No one was injured.
The calls for assistance came from St Georges Basin in the south, Shoalhaven Heads in the north and Kangaroo Valley in the west.
Two teams of SES volunteers were in the field with one team in the headquarters.
There were reports of trees down on local roads including Moss Vale Road at Barrengarry and the Princes Highway at Wandandian.
Severe weather was blamed for several power outages, including one that affected residents in Kangaroo Valley for several hours and others in Berry, West Nowra and Callala.
Meanwhile, a flood intelligence team is monitoring Shoalhaven River levels. At least one houseboat moored in the river was affected by debris washing downstream.
For storm and flood emergency assistance phone the SES on 132 500.