Cyclone impacted catchments tracked
From local democracy reporter Brendon McMahon:
Landslides high above State Highway 67 north of Westport in a stream catchment straddling an active fault-line is worrying the West Coast Regional Council.
An internal engineering staff report has highlighted the deterioration of vegetation on slopes at Barrytown and parts of Buller from Cyclone Ita in 2014, and delves into the progressive erosion in the Lake Stream catchment, 10km northeast of Westport township.
The cyclone caused massive damage throughout the entire West Coast, flattening swathes of native forest and vegetation, particularly in river valleys.
In Buller, the Lake Stream catchment on Mt Rochfort had already split into three channels by the time of the heavy storm this February, but the erosion has now escalated, regional council engineer Paulette Birchfield said.
"Multiple landslides" had left a huge volume of slip material sitting high up in the catchment, about 1 kilometres above the highway.
When the slip material did eventually move it could radically change the stream's direction, with significant potential to spill on to the road at the bottom of the slope, Birchfield said in her report.
The majority of the slips in Lake Stream were in the upper catchment, diverting the flow across a fan. In future heavy rain events the high slip material was likely to mean the stream would "take any number of other flow paths".
Birchfield said the possibility of mechanically diverting the flow and excavating the original Lake Stream channel would be difficult. Steep topography and thick vegetation made both foot and access for machinery challenging.
A large-scale landslide did occur in the catchment in at least 2015, a year after Cyclone Ita, and this had been supplying increased sediment and debris to the Lake Stream channel.
In normal conditions the stream flow would not have sufficient energy to transport additional slip material and the channel would slowly evolve in response.
However, an earlier heavy rainfall event in early May 2020 was probably large enough to move significant volumes of sediment and debris, causing Lake Stream to tear away from its original channel, breaking out in several places.
A 1997 thesis noted that until the downstream channel width and depth was increased to the new flow regime, floodwaters would continue to break out of the channels and drains, causing flooding and sedimentation of farmland and damage to property.
PICTURES: West Coast Regional Council
1: Lake Stream catchment, north-east of Westport.
2: Approximate location of the diversion site in Lake Stream.
Kalle
"Sports and travelling run in the family, and that's kind of what's led me to come to New Zealand."
"I grew up in a small town in Finland. My dad was involved with sports all his life, he was a shot putter, discus thrower, powerlifter, we traveled quite a bit when I was a kid. He never mentioned much of the rugby days. He just said he broke both of his shin bones playing rugby, so he said, ‘never play the sport, It's crazy.’
I started playing when I was 18. I played my first cap for the Finnish national team in 2014, we won the Finnish championship with my club. Rugby is not a big thing in Finland.
I moved here to play rugby in 2017. The club that wanted me to come over was Methven Rugby Club. They got me here and they were like, ‘what do you do for work? I’d just finished chef school in Finland. ‘We'll get you a job at Mount Hutt as a chef, you can do that while you play rugby with us.’ I said, ‘Perfect. Yeah, I'm in’.
I've always loved food. My mum was an amazing cook, and still is. When I was studying tourism I worked in some hotels in Finland, and I saw how the chef's worked. I just loved the kitchen vibe and I was like, Yeah, that’d be something I'd love to do.
I've had more of a culinary journey In New Zealand than in Finland. I started at Mount Hutt, after that I worked at The Dubliner in Methven. I worked as a senior pizza chef at Sal’s for maybe six months then worked as chef de partie at Cellar Door. At Eliza's Manor, I worked myself up to a junior sous chef. Then the opportunity came to work my first head chef job at Moon Under Water.
We're privileged to have a busy atmosphere, we can try new things and get a bit creative. There are no TV’s, just come here with your family or with your mates, play board games, to socialise.
I really want to drive the local food and ingredients through the menu. We don't mind spending more for quality ingredients as long as it's supporting New Zealand businesses. We just love to use local. And it's pub food, but I feel like it's elevated.
I play club rugby here for the Christchurch Football Club, the oldest club in New Zealand and I still play regularly for the Finnish national team, whenever they can fly me over to play."
- Kalle
View more stories, or nominate someone: @humansofchch
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Poll: Is it okay to grocery shop in your PJs?
I'm sure you've seen it while doing your weekly shop... In fact, it may have even been you.
What do you think about people heading to the supermarket in their pyjamas?
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14.3% It's fine!
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75.1% It's questionable
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10.6% Other - I'll share below
Vanessa
“Giggly girt! Giggly girt!”
“See I got my hair cut on Friday. I've got my hair band to keep it up. See? Like this I keep it up.
Biscuit Blair - she's my favourite woman. And you. And that cheeky lady over there.
My last name is Rule. I'll write it down for you, you silly old duff.
I was born on West Coast. I moved here when I was a little girl.
I like doing pictures here that’s why I like pictures. Doing art. I like going for a walk. I come here Monday, Tuesday, Wednesday, Thursday.
My sister, I go see her on Saturday. Have a cup of coffee, at home. She's five, nine. 59. I'm five, seven, 57. This year I'll be 58. My birthday's on a Thursday. I'm having chocolate cake and pizza. And lolly ice cream.
Some people are noisy. Nicholas, and Peter and Chris, they are my friends and that giggly girt over there.
I get headache sometimes at other work, because noisy.
I'm happy here. I could go for a walk if I want to. I'm good.”
- Vanessa, White Room Creative Spaces
The White Room is a community creative space that removes barriers to
making art. Through this, artists build confidence and connections and
embrace new opportunities.
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