Flood-prone Canterbury rivers in the spotlight
By David Hill, Local Democracy Reporter
Lessons learned from devastating floods in May 2021 are helping shape planning for Canterbury’s rivers.
Environment Canterbury (ECan) is proposing to invest $25 million a year, over the next 10 years, to boost flood protection as part of its draft 2024-34 long-term plan (LTP).
While flooding caused by Cyclone Gabrielle in Hawke's Bay last year attracted headlines, Canterbury has had its own damaging floods in recent years.
In 2019, the Rangitata River bridge was closed for several days following a flood, while the May 2021 flood caused widespread disruption, prompting a rethink of how ECan manages its river systems.
"A Cyclone Gabrielle event hasn’t happened, as far as we know, in Canterbury’s history, but one-in-200 year events seem to be happening more and more,’’ said councillor Ian Mackenzie, who chairs the council’s catchment resilience committee.
"Nobody is immune to being impacted by flood events."
The 2021 flood event showed the old river and drainage rating model was no longer fit for purpose, as rivers need to be looked at as a whole river system, he said.
To ensure the financial burden is spread across the region, the council is seeking to introduce a mix of district-wide and region-wide rating.
Without the council’s flood protection, land drainage and erosion control schemes, staff estimated there would be about "$9 billion per year of combined damages and lost earning potential would be felt".
Canterbury has about half of New Zealand’s river assets, with the regional council having oversight of 58 river schemes.
Flood protection work is urgently needed in the Waimakariri district, the council’s operations general manager, Leigh Griffiths, said.
Changes to the landscape caused by the growing urban environment and the 2010 and 2011 earthquakes meant "the level of flood protection is lower than would be expected", she said.
About $700,000 a year is spent on maintenance in the Ashley-Rakahuri River, with the council proposing to increase that to $800,000 per year and to initiate an eight-year, $15m upgrade programme as part of the LTP.
The work, for which the council will seek central Government funding, is likely to be similar to work planned in the Selwyn district.
Christchurch, Kaiapoi and part of the Selwyn district are protected by two levels of flood protection on the Waimakariri River, which has capacity for a one-in-500 year event.
It costs about $5m a year, with $1m coming from a targeted rate of $12 per ratepayer, per year.
The balance is funded by income from grazing and forestry on council-owned land between the stopbanks.
The capacity in some South Canterbury rivers means they "are expected to overtop their stopbanks" in a one-in-50 year flood event, while Ashburton is protected for a one-in-200 year event.
The proposed Selwyn district flood prevention work will be funded by a district-wide targeted rate and will include clearing out channels and flow paths, weed control and planting, and building resilience.
Exotic weeds, including poplars and willows, and loose shingle poses the biggest challenges, Mackenzie said.
"Bridges are more likely to survive if they’re not being treated as a battering ram [in a flood].
"Exotic weeds are one of the biggest problems.
"If we stopped doing what we do these exotic weeds would choke rivers and push them out to the berms."
■ LDR is local body journalism co-funded by RNZ and NZ On Air.
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Kia ora neighbours. We know your tomato plants are still growing, but we're looking ahead to the harvest already! If you've got a family recipe for tomatoes, we'd love to see it and maybe publish it in our magazine to share with our readers. Send your recipe to mailbox@nzgardener.co.nz, and if we use it in the mag, you will receive a free copy of our February 2025 issue.
Warnings about scams
This Fraud Awareness Week, we’re reminding everyone to stay sharp and look out for the warning signs of scams to stop them before they start.
Here’s what to watch out for:
🔍 Unrealistic offers or promises of easy money that are too good to be true
🔍 Pressure tactics: Scammers may rush or threaten you to act immediately.
🔍 Requests for personal info: Be cautious if you’re asked for bank details, passwords, or sensitive information.
🔍 Unusual payment methods like gift cards, cryptocurrency, or wire transfers.
🔍 Unverified contacts: Emails, calls, or messages from unknown or suspicious sources.
How to protect yourself:
✅ Stop and think before sharing personal details or making payments.
✅ Don't click on any links until you know that it is safe.
✅ Verify the source: Contact the organisation directly using official channels.
✅ If something’s not right, it's OK to hang up, walk away, ignore it and move on.
If you wish to report a scam, contact Police on 105 or report it online via 105.police.govt.nz/use-105.
Older residents call for Amberley bus service
By David Hill, Local Democracy Reporter
A lack of public transport and access to healthcare were among the issues raised in recent a survey of older residents in the Hurunui district.
The Hurunui District Council surveyed residents aged over 60 during August and September, as it looks to develop an age-friendly community plan to support an ageing population.
There are currently no public bus services in Hurunui, which includes the town of Amberley, about 40km north of Christchurch.
Community development facilitator Vanessa Nelmes said public transport is a big issue for many elderly people, while accessing medical care when needed remains a concern.
While there are a number of community vehicle trusts operating in the district, respondents felt a regular bus service from Amberley to Rangiora and/or Christchurch is needed.
Hurunui mayor Marie Black has been among those advocating for a bus service, but for now Environment Canterbury says there are no plans to offer public transport in the district.
The distance to medical care in Christchurch and the lack of a dentist were also mentioned, Nelmes said.
The survey received 213 responses from residents aged from 60 to their 90s, with half coming from residents in the south ward, which includes Amberley.
Nelmes said the survey found a majority of the respondents felt confident using computers, internet and / or smart phones.
‘‘It kind of puts that myth to bed that old people don’t like using technology.
‘‘I think we really do need to change our mindset compared to what is really happening in our community.’’
Although about 50 respondents said they were not confident using technology, showing there was still a need for providing support.
The survey also asked if people would like to improve their skills with technology and it was ‘‘evenly split’’, Nelmes said.
A concerning trend in the survey was a number of respondents who said they felt socially isolated, especially those new to the community, she said.
‘‘We had half a dozen people who replied along the lines, ‘you have to put yourself out there, but it’s how to make the first step’.’’
The survey has been analysed by the age-friendly steering group, which plans to widen its membership to include different agencies such as district nursing and is seeking a rural voice, Nelmes said.
Council staff plan to do a stocktake of services available for senior citizens in the district, before beginning work on a draft age-friendly plan.
Environment Canterbury public transport strategy and planning manager Sonia Pollard said there are no plans to extend bus services into Amberley or the wider Hurunui district.
‘‘The focus for public transport improvements is on delivery of the core routes in Christchurch and the direct services between the main urban areas in Waimakariri and Selwyn districts and Christchurch City.
‘‘Service improvements are reliant on funding through local rates and the National Land Transport Programme.’’
She said routes outside large urban areas are unlikely to meet the funding criteria in the 2024/27 National Land Transport Programme.
But as part of the 2025/26 annual plan staff are considering how to best serve the rural community, including assessing new routes outside the Greater Christchurch boundary.
■ LDR is local body journalism co-funded by RNZ and NZ On Air.
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