New Zealand's reaction to the 7.3 magnitude earthquake that struck near Te Araroa in North Island of New Zealand; land and marine tsunami warnings lifted. Video / Supplied
Submissions to Whakatāne District Council’s long-term plan have left councillors worried that people don’t know where to go during a tsunami alert.
The council’s instruction in the case of a tsunami warning or a long or strong earthquake is to head for high ground or move inland.
However, a key theme from submissions to the LTP was people calling for a new bridge to help ease congestion in case of an emergency.
Many mentioned the 2021 tsunami alert that resulted in jammed Whakatāne streets from people trying to flee the town by car.
Councillor Gavin Dennis felt there was a communication problem.
“I’m just stunned that Whakatāne hasn’t got that overall plan communicated to the people, to the extent we saw so many people in their submissions saying they needed to get out [over the bridge].”
Many people in Whakatāne evacuated on foot up Mokorua Gorge Rd during the 2021 tsunami warning. Photo / Whakatane Beacon
During the 2021 tsunami warning, one of the Whakatāne rest homes had evacuated to Braemar Rd.
“They crossed over the Whakatāne River, the Rangitāiki River and the Tarawera River. They could have been killed in each one of those in a decent tsunami ... it is a disaster for people to go out there,” Dennis said.
“It should have been one of our priorities, to say to the people, ‘you need to go up the hill’, and then provide a way to do it.”
He suggested the Landing Rd bridge be blocked by police in case of a tsunami warning and streets converted to double lane in one direction — to safety.
Councillor Andrew Iles questioned why anyone would try to cross the Whakatāne River in the event of a tsunami.
“You’d be heading our way wouldn’t you?” he said, gesturing south towards Tāneatua and Waimana in his Te Urewera ward.
Many people did walk to higher ground along Hillcrest and Mokorua Gorge Rds during the tsunami alert. Others attempted to drive south on Tāneatua Rd.
An elderly Whakatāne resident who didn’t want to be named said she was unable to walk up the hill due to a disability. It took her over an hour to reach Tāneatua because traffic was at a standstill. Much of that time was spent trying to get across town.
“It was stop-start all the way to Tāneatua. We couldn’t have gone over 20km/h all the way there. A few people pulled their cars to the side of the road and started to climb the hill. I remember looking at the fence to a farm paddock and wondering if I would be able to climb through it.”
Traffic built up on the Ōhope Hills after a tsunami warning along the Bay of Plenty coast in March 2021. Photo / Andrew Warner
She felt many people may have turned back and tried to take an alternative route out of town over the bridge, which was something she had considered.
Chief executive Steph O’Sullivan agreed it was concerning how many people indicated needing to cross the river in an emergency because it was not what they should do.
The council had conducted a letterbox drop with emergency management and evacuation information to 7000 households last year.
Civil Defence Emergency Management duty controller Stace Tahere said the new tsunami inundation modelling will look at how tsunami interact with rivers, including how tsunami will travel upstream the flow path of a river.
The new tsunami inundation modelling is expected to be completed in mid-to-late 2024 with resulting changes to evacuation zones next year possible.
“As with any new science, we will let people know about any relevant changes and how this may impact them. For now, the existing tsunami evacuation maps include the most up-to-date information available.”
LDR is local body journalism co-funded by RNZ and NZ On Air.
