skip to main content

I want to...

Current filter:

Facilities

What is Napier City Council doing about stormwater

Napier City Council has committed to spending $20.6 million on stormwater improvements in the next ten years.

What is the Napier City Council doing about stormwater?

Napier City Council has committed to spending $20.6 million on stormwater improvements in the next ten years. This, if combined with us all working together to look after our water, will improve the water quality of our estuary, so that it can remain one of the most significant cultural, environmental, ecological, and recreational sites on the East Coast of New Zealand.

The urban stormwater system is being continually upgraded. The current design standard requires the system to be designed to cater for the type of storm the city might expect to experience once in every 10 years in such a way that limits surface ponding. Increasing infill and greenfield developments have added more buildings, driveways, roads and sealed surfaces within the city boundaries, resulting in greater volumes of water running off the hard, impermeable surfaces and putting pressure on the existing stormwater and pumping systems. Up until 1996, the system was based upon a two year return period, meaning the city had a 50 per cent chance of stormwater ponding in the streets each year. There is now about a 10 per cent chance of similar ponding in any one year, known as a 10 year return standard.

It is a huge and very expensive task that will take decades to increase the stormwater system's capacity from the old design standard to the new design standard. The Council has been allocating funding for this purpose ever since the new standard was introduced.

During floods, priority is given to pump station operations, in particular cleaning the screens free of weed to allow the pumps to operate to their peak capacity.

Loading...

Napier City Council - Copyright © 2019 Napier City Council

Disclaimers and Copyright
While every endeavour has been taken by the Napier City Council to ensure that the information on this website is accurate and up to date, Napier City Council shall not be liable for any loss suffered through the use, directly or indirectly, of information on this website. Information contained has been assembled in good faith. Some of the information available in this site is from the New Zealand Public domain and supplied by relevant government agencies. Napier City Council cannot accept any liability for its accuracy or content. Portions of the information and material on this site, including data, pages, documents, online graphics and images are protected by copyright, unless specifically notified to the contrary. Externally sourced information or material is copyright to the respective provider.

© Napier City Council - www.napier.govt.nz / +64 6 835 7579 / info@napier.govt.nz