Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search

 

Wainuiomata First Off The Blocks In City-wide Flood Mapping Project

People in Wainuiomata will soon be able to view completed stormwater flood hazard maps of their suburb, as part of the most comprehensive flood mapping programme in Lower Hutt’s history.

The maps, created by Wellington Water Ltd on behalf of Hutt City Council, identify flood prone areas caused by stormwater flooding in Lower Hutt’s urban areas. Wainuiomata is the first area to be completed. And Greater Wellington Regional Council (GWRC) is now reviewing flood maps of the 22 kilometre long Wainuiomata River.

Hutt City Council Director of Environment and Sustainability Helen Oram says Lower Hutt is the most densely populated flood plain in the country with a long history of flooding. The mapping programme will help reduce the impact of flooding by giving council, government and Civil Defence a better understanding of future flood events.

"The main aim of this work is to protect lives and property," she says.

"So to build resilience in our communities, this information is vital in showing where we can safely develop land, place infrastructure and where to focus our stormwater investments."

The stormwater flood maps use computer modelling to depict what areas are affected by heavy rainfall draining from the hills into urban areas, from roofs, roads, footpaths and the water’s overland paths to drains, streams and rivers.

The draft stormwater flood maps were taken to Wainuiomata at the end of 2019 for residents to view, ask questions and share their recollections of past flooding. Around 60 people attended three open days.

This local information - which verified many flood-prone areas, blockages of drain intakes and culverts, water quality issues and the impacts of development - was used to fine-tune the maps.

GWRC is now updating its 2012 flood hazard maps of Wainuiomata River. GWRC is urging local residents to share their knowledge of past river flooding. This information is critical in getting the maps as accurate as possible.

GWRC Flood Protection Department Manager Graeme Campbell says the river’s meandering course has changed in some places. GWRC will update its flood hazard maps over the next 18 months using the latest computer modelling software and more extensive data.

Wainuiomata residents can provide their recollections of flooding of the Wainuiomata River to GWRC staff and view the completed stormwater flood hazard maps at the Wainuiomata Community Hub on:

-Wednesday 23 June, 3-5pm

-Saturday 26 June, 11am-2pm.

The stormwater flood maps depict flooding in one in 100 year flood events, or events that have a 1 per cent chance of happening in any given year, and one in ten year floods. They take into account the latest climate change projections and are peer reviewed by independent specialists.

All councils are required to make natural hazard information public. Any property shown to be at risk will have this information added to its Land Information Memorandum (LIM).

The information provided by the stormwater and river flood hazard maps will be incorporated into the review of Hutt City Council’s District Plan to ensure future developments take account of flood risks and don’t increase the risk to existing properties. This information is used to help set floor levels for house developments to ensure they will not be flooded.

In the coming months, draft stormwater flood maps of Stokes Valley, Petone, Alicetown, Moera and the Te Awa Kairangi/Hutt River valley floor will be made available for residents to view and provide their observations and photos of past flooding.

© Scoop Media

 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines


Gordon Campbell: On The America’s Cup, Critical Race Theory And A New, Weekly Music Playlist

So… Why don’t they just cut to the chase, and call it the Emirates Cup? As this column predicted several months ago, the next America’s Cup challenge is headed overseas. Here’s what Werewolf said back in March:
Emirates has made a major commitment to Portsmouth/Isle of Wight as a sailing centre of excellence – and voila, that’s where the next challenger of record is coming from, and where the next Cup contest could well be sailed. Such incredible luck for Emirates, right..? More>>

 



Marine: Wider Roll-out Of Cameras On Boats To Support Sustainability And Protect Marine Life

Up to 300 inshore commercial fishing vessels will be fitted with on-board cameras by 2024 as part of the Government’s commitment to protect the natural marine environment for future generations... More>>

ALSO:


Government: Plan For Vaccine Rollout For General Population Announced

New Zealanders over 60 will be offered a vaccination from July 28 and those over 55 from August 11, Prime Minister Jacinda Ardern announced today... More>>

ALSO:



Jewish Council: New Zealand Not Immune From Rise In Antisemitism

The representative body of New Zealand Jewry, the NZ Jewish Council (NZJC), has expressed concern about the high number of antisemitic incidents in New Zealand recorded last month. Spokesperson for the NZJC, Juliet Moses, said... More>>

NZNO: Nurses Reject DHB Offer And Confirm Strike Action

The New Zealand Nurses Organisation says its 30,000 members who work in DHBs have voted overwhelmingly to reject a second offer in their current round of multi-employer collective agreement (MECA) negotiations... More>>

ALSO:


 
 
 
 
 
 

LATEST HEADLINES

  • PARLIAMENT
  • POLITICS
  • REGIONAL
 
 

InfoPages News Channels