Kia ora Kevin

Thank you for your email. We acknowledge receipt of your OIA request below.

We will respond as soon as possible and no later than Monday 19 August 2024, being 20 working days after the day your request was received. If we are unable to respond to your request by then, we will notify you of an extension of that timeframe.

Ngā mihi
Sarah

-----Original Message-----
From: Kevin Smith <[FOI #27723 email]>
Sent: Friday, July 19, 2024 12:03 PM
To: Enquiries <[email address]>
Subject: Official Information request - Sea Level measuring equipment in Buller

Dear National Institute of Water and Atmospheric Research Limited,

A sea level buoy has recently been deployed in Westport.

I am requesting correspondence about the level measuring equipment that was used for previous recordings.

The chart at the beginning of the recent publication 'West Coast Region Coastal Hazards mapping methodology shows plots for Charleston and Westport.
This NIWA and WCRC booklet is dated 29 April 2024.

Could you please provide copies of the correspondence pertaining to those two sites ?

I am seeking info on the data gathering, site maintenance, site calibrations and the compensation methods applied.
ie, How the data was obtained, how it was checked and then what atmospheric and sea pressures, temperatures and tidal factors were subsequently applied.

The same document refers to LiDAR measurements.

Could you please advise what vertical changes have been detected in the Buller coastal region over the past decades ?

I have heard from a local surveyor that a rise in ground level has been recorded.
This would be by a number of measuring techniques so I am interested in the rate of rise and the method used.

Yours faithfully,

Kevin Smith

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