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- High-Frequency
- Bottom Pressure Records
- Other Long Records
- GLOSS/ODINAFRICA Calibration Data
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Data Notes
- Individual Station Data and Plot Notes
- Referencing the Data Set
- PSMSL Help File
- 2010 Changes to the PSMSL Data Files
Extracted from Database
23 Jun 2025
WARNING: METRIC STATION
THIS IS NOT RESEARCH QUALITY DATA.
USE WITH EXTREME CAUTION.
THIS IS NOT RESEARCH QUALITY DATA.
USE WITH EXTREME CAUTION.
Station Information
| Station ID: | 1770 |
| Latitude: | -21.133333 |
| Longitude: | -175.2 |
| GLOSS ID: | 125 |
| Coastline code: | 744 |
| Station code: | 1 |
| Country: | TONGA |
| Time span of data: | 1990 – 1994 |
| Completeness (%): | 87 |
| Date of last update: | 30 Oct 1996 |
| 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.
Tide Gauge Data
Additional Data Sources (guide to additional data sources)
Nearby Real Time Stations from VLIZ: nkfa, nkfa2Fast Delivery Data from UHSLC station 38: hourly and daily
Research Quality Data from UHSLC station 38: hourly and daily
Station Documentation
Documentation added 1993-11-15
DATA RECEIVED FROM TOGA OFFICEDocumentation added 1996-04-23
the sharp drop in early January 1993 agrees withthe signature at Noumea and Rarotonga and the
low trend through 1994 agrees well with Noumea.
No evidence was found in tide staff readings to
suggest a shift. We assume the drop is real.
Documentation added 1996-10-09
data 1990-94 received via UH Sea Level Center from authority G31990-94 data revised in data submission of September 1996
Documentation added 1996-10-09
1990-94 gauge type=Ott float & well at 21 08 S 175 12 WData Authority
Ministry of Lands, Survey and Natural ResourcesP.O. Box 5
Nuku'alofa
