"I think Northlanders were prepared really well. They reacted really well," he said.
Northland had experienced its wettest season in recorded history.
"We're prone to flooding and you can't forget we're in a tsunami-related area."
In the case of a civil defence emergency, "people should "make sure they have water, batteries, tin food, that sort of thing. Three days' worth. By that stage we should be able to get to you."
The theme this year is "what would you do?"
A display in Whangarei's Cameron St Mall yesterday outlined civil defence emergencies and what Northlanders could do to prepare.
"It will be outlining what can happen and what we need to do," said Dimery.
The emergency management group is also posting daily messages and challenges on Facebook during the week, which runs until Saturday.
They are posting a disaster scenario each day, to get people thinking about what to do in these situations.
People are also able to share their best tips for coping in events similar to the recent flooding in Northland.
A range of information on Get Ready Week can be found on the Civil Defence website, including scenarios in which people are asked how they might cope in the event of various disasters.