Station Information

Station ID: 996
Latitude: -39.05618
Longitude: 174.03439
Coastline code: 690
Station code: 81
Time span of data: 1955 – 2022
Completeness (%): 81
Date of last update: 18 Sep 2023

Green Arrow: Current Station
Yellow Marker: Neighbouring RLR Station
Red Marker: Neighbouring Metric Station

Please note: In many cases, the station position in our database is accurate to only one minute. Thus, the tide gauge may not appear to be on the coast.

Additional Data Sources (guide to additional data sources)

Nearby GNSS Stations from SONEL: NPLY
Research Quality Data from UHSLC station 76: hourly and daily

Station Documentation

Link to RLR information.

Documentation added 1991-06-11

Port Taranaki 690/081 RLR(1988) is 11.8m below New Plymouth BM

Documentation added 1995-06-20

1992: apparent datum change. Authority have confirmed that no change in datum was made and gauge malfunction is thought likely.

Documentation added 2003-01-17

New data from John Hannah added 17/01/03 which supercedes old data. New data does not have any missing days information.Old data has been backed up.

Documentation added 2003-01-17

New data from John Hannah was for Auckland II, Dunedin II,Lyttelton II and Wellington II.

Documentation added 2005-10-17

There is a new John Hannah paper referring to New Zealand data for Wellington, Dunedin, Lyttelton and Auckland. The reference is: "An updated analysis of long-term sea level change in New Zealand." Geophysical Research Letters, V31, L03307, doi:10.1029/2003GL019166 (2004). DATA PRIOR TO 1984 SUPPLIED BY AUTHORITY 53

Documentation added 2008-10-01

Revised data received from Glen Rowe at LINZ data span 1984-2007. Previous data from database 1984-1995 copied and replaced with revised dataset.

Documentation added 2016-07-12

Historic data 1955-1983 have been supplied by LINZ these have been added to the database.

Documentation added 2018-06-28

The Kaikoura earthquake at 23:02 on 13th November 2016 impacted on a number of stations in the central part of New Zealand. Because of this the hourly values for several stations from 14th November 00:00hrs have been adjusted by LINZ. For station Port Taranaki the adjustment is -0.012m.

Documentation added 2020-08-25

The adjustment due to the KaikĊura earthquake of 2016 has been removed as relative sea level series should include land movement.

Documentation added 2021-08-23

A revised copy of the New Zealand data values for Port Taranaki has been received from the data supplier the Land Information New Zealand (LINZ). The revised data begins from 2014. This exercise has been carried out to correct some anomalies with the high frequency data.
Adjustment has also been applied to the data to account for the Kaikoura earthquake by creating a new datum TGZ December 2016 6.709m below benchmark New Plymouth Fundarmental BM.
Consequently the Metric data has had the effect of Kaikoura removed but the effect of the earthquake is still evident in the RLR data.

Data Authority

Land Information New Zealand
155 The Terrace
PO 5501
Wellington 6145