Comment at ODT Online:
Flood of misinformation
Submitted by JimmyJones on Wed, 03/02/2016 – 1:25pm.
Mayor Cull makes a multitude of false statements to justify his opinion that the June flood was caused by Global Warming and not by the DCC’s decrepit, underfunded and poorly functioning stormwater system.
The first point is that Mayor Cull is wrong to keep saying that sea-level rise has been 3.3mm/yr: he has chosen to use the ORC’s Green Island tide gauge, but this is a DIY arrangement held together with rubber bands and string. It has no GPS system and is not tied to the Dunedin Datum – it’s data is therefore not valid, covers only a few years and should not be used for long term trends.
Sea-level rise has been officially established for the Dunedin area at 1.3mm/yr using good quality long run data from Port Chalmers. The Port Chalmers tide gauge is used by the Permanent Service for Mean Sea Level (www.psmsl.org) and it forms part of their global network of tide gauges. The Green Island tide gauge is not used by the PSML, but Dave Cull finds the exaggerated figures from it useful for his political purposes.
In reply to:
Neil Johnstone, of Macandrew Bay, calls for rational and responsible discussion on sea-level rise and risks in South Dunedin.
### ODT Online Wed, 23 Dec 2015
Cull’s flood remarks a ‘mishmash’
By Neil Johnstone
OPINION Having spent several decades as a professional practitioner in flood control and hazard management, I feel obliged to comment on Mayor Dave Cull’s latest contribution on South Dunedin flood risk (ODT, 16.12.15). I am currently reviewing hazard reports used by the Dunedin City Council in its woeful approach to natural hazards across the city, most obviously in respect of landslips, but also on flood issues. My conclusions differ from those of Mr Cull. The council originally claimed the extensive flooding in June was caused by “a 150-year flood”, and not by infrastructure failure. Having subsequently seen the 150-year claim thoroughly debunked, Mr Cull is now blaming sea-level rise (and still not infrastructure) for the flooding.
In reply to:
Courage on everyone’s part, and some tough conversations are required in the Dunedin’s battle against sea level rises, writes Mayor Dave Cull.
### ODT Online Wed, 16 Dec 2015
Tough decisions to be made
By Dave Cull
OPINION Over the past few years the effects of climate change have crept up on Dunedin – albeit in full view. Now we must act. We must act to adapt to what is happening, and we must act to slow down or mitigate the rate at which the effects get worse. Since 2008, central government has advised councils to allow for sea-level rise as a result of climate change when planning for development or infrastructure investment. Currently, that advice is to allow for 1m over the next 100 years. […] In June 2015 Dunedin suffered an extreme rain event which caused serious flooding in South Dunedin, Mosgiel and other parts of the city.
In November 2015, the Parliamentary Commissioner for the Environment published a report about how sea-level rise would affect New Zealand. […] It found that Dunedin is the most extensively and severely affected centre in New Zealand and explained that the main problem here is groundwater levels being forced up by rising sea levels.
Otago Daily Times Published on Jun 4, 2015
Raw aerial video of Dunedin Flooding
Video courtesy One News.
GREENIE UNI STUDENTS HIT UP D-D-DAVE, HAWK-EYE and POPEYPANTS, DEAR GOD
### ODT Online Thu, 4 Feb 2016
Councillors briefed on climate change
By Carla Green
Dunedin officials got a climate change briefing yesterday from an unlikely source: students at the University of Otago. The students, who were enrolled in a summer course titled Climate Change and Law, had researched Dunedin’s action on climate change from a variety of fronts, including renewable energy, the landfill and flooding. […] In particular, [Mayor Dave Cull] agreed with one presenter who had pointed out the importance of public education in South Dunedin, considering the extent to which it was at risk of flooding.
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Posted by Elizabeth Kerr