Officials with the City of Calgary have updated their estimates on the cost of rebuilding the city after June's flooding, and now say that those repairs will cost over $400M.

The media was given a tour of the hardest hit areas at the Inglewood Bird Sanctuary on Tuesday morning and officials say that many parks, pathways, and river banks have been destroyed.

"Something like 94 percent of pathways have been opened and are useable by the public. There's still about six percent that aren't and they're the hard six percent because some of them are seriously damaged," said Gordon Stewart, Recovery Operations Director.

Stewart says that $400M is the current estimate for repairs but that amount could get much bigger.

"We're estimating that on a Class 5 estimate, which is first shot at it, about $100M in parks expenses and another $100M in water resources."

Stewart says that the $400M estimate for the city's infrastructure will just return things to the way they were and won't do anything to build on mitigation or increased resiliency. "It's just to get things back to where they were before."

Duane Sutherland is with the city's Parks/Pathways Department and says that at the height of the crisis, 93 kilometres of pathway was affected by flooding. Crews were able to get in and make repairs and were able to cut that down to 48 kilometres by July 1.

"As of today, we're at about 32 kilometres affected, now not all of them are closed due to being eroded, some of them just don't have links to them so we had to close the whole stretch," said Sutherland.

Sutherland says they have crews going full out to get things back to normal and he thinks that it will likely take a couple years.

Frank Frigo is a Senior Planning Engineer with Water Resources and says they are looking at 135 sites along the river where there has been severe erosion.

"Here, what's happened is the Bow River has really cut almost a full new river channel, its moved over almost completely from where it was before the event and the scour has gone all the way to bedrock here," said Frigo. "Repairs here are quite a complex balance of looking at environmental factors, looking at the erosion factors and looking at the existing infrastructure that's there along 8th Avenue."

Frigo says rebuilding the banks will be a huge undertaking.

"Rebuilding the bank here involves placing heavy rock to provide toe protection from the erosion that could occur in the future but also rebuilding the bank with earth materials or potentially structures to make sure that we have a stable long-term solution," said Frigo.

City officials say some of the losses are insured, some will be covered by government funding, and some will fall on taxpayers.