Old riverbed could ease flood risk
From local democracy reporter Brendon McMahon:
Revegetating the historic Buller River overflow channel to lessen the risk of floodwaters spilling into the Orowaiti River and hitting the eastern side of Westport township is being proposed.
It is one part of the proposed $26 million Westport flood protection scheme.
In the 19th century the Buller River was straightened using a bypass, taking out a meandering section, creating Organs Island upstream of Westport.
The original meandering section remains, but the Westport Joint Rating District Committee last week heard the new scheme proposes to take back the leased Organs Island area and to revegetate it.
Using it as a riparian buffer would reduce the "split" in flow from the river's main channel during floods, consulting river engineer Gary Williams said.
The idea was to redirect more flow away from the Orowaiti and lessen the ongoing need for rock maintenance at Organs Island.
Williams said the area required "constant management" with a lot of rock put there over the years to keep the Buller River in the 19th century diversion.
Adding more vegetation would "split the flow" more down the main channel "without having a strong fixed rock wall over that long length".
"The idea is in the end that nature will do most of the regeneration," he said.
Hydrological consultant Matthew Gardner said vegetation could act as "a significant buffer" against flow.
"What we found with the model, the Buller River is at capacity and for every increase in flow more comes down the Orowaiti. This vegetation actually reduces that."
It was in fact going back to the method put forward in the 19th century to manage the area, Gardner said.
The other aspects in the scheme are the proposed realignment of Abattoir Creek, east of Westport, which would reduce flood flows from the east towards the town.
Ruled out is dredging the lower Buller River, making a direct cut to the sea from the Orowaiti Estuary, excavating a causeway to protect the Snodgrass Road residential area, adding culverts in the Westport to Ngakawau railway at Stephens Rd, and constructing culverts on the embankment near State highway 67 near the Orowaiti Bridge.
Poll: Should we be giving the green light to new mining projects? 💰🌲
The Environmental Protection Authority announced this week that a proposed mine in Central Otago (near Cromwell) is about to enter its fast-track assessment process. A final decision could come within six months, and if it’s approved, construction might start as early as mid-2026.
We want to know: Should mining projects like this move ahead?
Keen to dig deeper? Mike White has the scoop.
-
53.3% Yes
-
46.7% No
A riddle to start the festive season 🌲🎁🌟
I'm a fruit. If you take away my first letter, I'm a crime. If you take away my first two letters, I'm an animal. If you take away my first and last letter, I'm a form of music. What am I?
Do you think you know the answer? Simply 'Like' this post if you know the answer and the big reveal will be posted in the comments at 2pm on the day!
Want to stop seeing these in your newsfeed?
Head here and hover on the Following button on the top right of the page (and it will show Unfollow) and then click it. If it is giving you the option to Follow, then you've successfully unfollowed the Riddles page.
‘Tis the season to not get scammed ...
As Christmas gift shopping moves increasingly online, scammers are ramping up their activity across the country.
Dunedin’s Investigation Support Unit is seeing more and more people fall victim to scams and other fraudulent activity, particularly on Facebook Marketplace.
There are a few ways to avoid the scams and keep yourself safe doing online trades this holiday season, says Southern District Service Delivery Manager Senior Sergeant Dalton.
🔒 “A good first step when looking to purchase something on Marketplace is to check when the seller’s Facebook profile was created. If it’s very recent, there is a higher risk that they have just created this account for a one-off fake item.”
🔒 Another important step is to make sure the seller’s profile name and bank account name match up. “We’re seeing a lot of scammers claiming their bank account name is different because it belongs to their partner or family member - that’s a huge red flag."
🔒 “When you’re selling, never trust a screenshot anyone sends you showing that payment has been made. Check your own bank account to make sure a payment has gone through."
🔒 “Quite frankly, it’s best for all parties to agree to pay, or be paid, for items in cash and in-person. Ideally in a public place with CCTV coverage."
🔒 "If you’re buying a car, check Carjam.co.nz to see if it’s stolen or if there’s money owed on it.”
A reminder: Suspicious activity can be reported on 105
Loading…
