The repair bill for recent wild weather across the district is expected to run into the millions of dollars as the clean up continues.
Councillors at a meeting of the Rotorua Lakes Council's operations and monitoring committee this week were updated on costs and associated work after three significant weather events in March and April caused widespread damage around the region.
The council's transport and waste solutions director Stavros Michael told councillors the estimate for the clean up was $2.3 million after about 900 separate weather-related incidents were recorded.
"As a result of extraordinary rainfall April 4 and 5, following the previous rainfall event March 11 and 12, council dealt with localised flooding, slips and tree falls," Mr Michael said.
"Slip remains are still being cleared by Fulton Hogan crews working throughout the district...some sites will require specific stabilisation works.
"This is currently being assessed and will require a number of retaining structures to be constructed and/or some road realignment."
He said April's weather event resulted in new record inflows of 71,000cu m to the Wastewater Treatment Plant, causing another overflow of fully treated wastewater to the lower Puarenga Stream.
The Rotorua lakefront promenade has been temporarily fenced off and will require extensive renovation once lake levels drop.
Shoreline erosion at lakes Rotorua, Tikitapu and Rotoiti has also damaged tracks, structures and other assets. Various sports grounds had to be closed over several weeks and autumn turf restoration has been halted.
He said the council had applied to the New Zealand Transport Agency for emergency funding to cover costs.
If successful, that would cover 52 per cent of those costs.
Paradise Valley Rd resident and rural board member Bob Martin said there was a lot of damage in his area, but as long as the council kept residents in the loop he would be happy.
"There's a lot of undermining to tar seal that's not obvious from the road, but there are enough safety measures in place."
Mr Martin said he was pleased the council had applied for emergency funding.
"So it seems they have been proactive in that respect."
But, he said signage could have be better between the lights the council had set up on a portion of the road while the clean up continued.
"With the resources that they've got, they are doing a good job.
"But, we also have to look to the future because these weather events are only going to get worse.
"There have been a number of floods over the last 10 years and I'd say hundreds of thousands of tonnes of spill have gone into Lake Rotorua from the streams up here," he said.
Chairwoman of the council's Rural Community Board Shirley Trumper said rural areas had two significant issues with flood damage.
"Affected property owners in the vicinity of Settlers Rd have themselves arranged to meet with council to discuss what can be done to alleviate the damage to property from flooding in the future.
"Paradise Valley residents, affected by significant damage, have been in discussion with council and are currently going through a staged process to determine workable solutions to not only return access to their properties, but also on future prevention.
"I am certainly aware of the pressure council contractors were under to return the roads to passable levels and believe they worked in a methodical manner with the resources available."
Mrs Trumper said rural infrastructure and funding was always a concern to the rural ratepayer, therefore, the rural board will be encouraging the council to review the roading budgets in the next round of annual plan deliberations and on into the long-term plan.
Three weather-related incidents in March and April
Clean up costs estimated to be $2.3 million
Council to apply for emergency funding
900 separate incidents of flooding, slips or other damage