The owners of a devastated houseboat company are suing the province of B.C. and the District of Sicamous for negligence in connection with a flood that rolled through the region in June.

Waterway Houseboats, in business since 1968, was virtually wiped out by flooding, which the owners blame on forestry activity.

General Manager Neil Millar says nothing could have prepared him for the scale of the disaster.

"It's like a tsunami, only on a smaller scale geographically. But the damage was about the same," Millar said.

Millar said buildings and property belonging to the company were destroyed.

He said that the province pledged to help, but hasn’t yet.

"When the cameras were all here, it was like, ‘We're going to help you, we're going to take care of this, don't worry,’" Millar said. "But then it comes down to, ‘No, we're not."

Millar said the matter is now headed to B.C. Supreme Court.

The company claims the province failed to clear and inspect a culvert built to support a forestry service road, resulting in the torrent of mud, sand, boulders and trees.

The District of Sicamous is also named in the lawsuit because it owns a bridge that allegedly contributed to the problem.

Neither the provincial government nor the district has filed a response to the civil claims.

With files from the CBC's Jason Proctor