Both the Grey and Buller rivers were still rising at noon today, but Civil Defence said the rate had slowed.
A third emergency floodwall meeting was held in Greymouth just before midday, when the Grey River passed the 6m mark.
However, West Coast Regional Council chief executive Mike Meehan said the rate of the rise had slowed.
"We are thinking it probably won't go too much over this," Meehan said.
"And it's not too dissimilar for Buller."