Volunteers with the American Red Cross canvassed neighborhoods across Oahu Saturday, stopping at Jane Sawyer's Kaneohe home to assess the damages.
"We built this house 12 years ago. We've never had a problem like this," said Sawyer.
Residents said Friday morning's relentless downpours came quickly and left a destructive path that will cost homeowners to repair.
"We are not in a flood zone so unfortunately, we didn't actually have flood insurance," said resident Erin Cooper.
However, residents on Aina Moi Place off Kaneohe Bay Drive say the extent of destruction may have been preventable.
"I think there's been a lot of back up and things that haven't been attended to as they should have been. So I think that held the water up and just when it was so much it couldn't handle it," said Sawyer.
The resident manager of Yacht Club Knolls, Roger Scheekey, said a culverts built below the H-3 freeway are not properly maintained by the state department of transportation.
"What happens is when it rains we have so much runoff of either eroded dirt or debris and debris that hasn't been maintained or cut. So when it clogs out ditch what happens is that the water starts to spread over the property," said Scheekey.
The National Weather Service's rain gages show an inch of rain dumped every hour on the windward side yesterday morning.
"I would not say that it could have stopped it completely but we could have minimized it," Scheekey said.
The Department of Transportation spokesperson Dan Meisenzahl said the state is assessing the situation.