Parts of Hawke's Bay, particularly Wairoa, were on alert on Monday afternoon as significant rain continued to soak the region.
MetService issued a heavy rain warning for the Wairoa District and further north into Gisborne from 6pm Monday until 10am Tuesday.
The warning said 80-110mm of rain was expected to accumulate and peak intensities of 10-15mm an hour are likely.
Surface flooding and slips were possible.
A Wairoa District Council spokesperson said about 3pm that Mahanga Rd had been scoured out by heavy rain, Russell Parade North Rd in Frasertown had a drain blockage and State Highway 2 in Nuhaka had some surface flooding.