Data



Data Notes



Extracted from Database

14 Oct 2019

PONTA DELGADA

Station Information

Station ID: 258
Latitude: 37.735583
Longitude: -25.671408
GLOSS ID: 245
Coastline code: 360
Station code: 1
Country: PORTUGAL
Time span of RLR data: 1978 – 2018
RLR completeness (%): 74
Time span of metric data: 1924 – 2018
Metric completeness (%): 63
MTL Data: 1924-1963
MTL-MSL (mm): 3
Link to ellipsoid: Available
Date of last update: 13 Aug 2019

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

Plot of monthly mean sea level data at PONTA DELGADA.

Link to larger image of monthly data plot.
Download monthly mean sea level data.

Plot of annual mean sea level data at PONTA DELGADA.

Link to larger image of annual data plot.
Download annual mean sea level data.

Download metric sea level data. Use only with extreme caution.
NOTE: If some of the data are red in the plots above, the 'flag for attention' is set. Please see the documentation below.

Additional Data Sources (guide to additional data sources)

Nearby GNSS Stations from SONEL: PDEL
Nearby Real Time Stations from VLIZ: pdas
Fast Delivery Data from UHSLC station 211: hourly and daily
Research Quality Data from UHSLC station 211: hourly and daily

Station Documentation

Link to RLR information.

Documentation - date unknown

PRIOR TO 1978 DATA SUPPLIED BY AUTHORITY CODE NO. 95

Documentation added 1998-11-04

data for 1990-91 replaced with revised values received from authority 41

Documentation added 2006-10-30

Following the supply of data 1978-2005 banked data revised and updated RLR value also calculated. FCODE in STTN table revised from HL to 24. However data 1924-1977 are Mean Tide Level(MTL) values.

Documentation added 2011-10-03

It has come to our notice that there was an error in the RLR diagram for Ponta Delgada. The diagram has been re-calculated, as a result the RLR factor changed from 5.887m to 5.871m. The data has been adjusted.

Documentation added 2016-01-22

A value of MTL-MSL=3 mm has been derived using the GESLA2 (high-frequency tide gauge) dataset using harmonic constituents. As the correction is only applied to RLR data and the data from 1924-1977 is metric, it is not used in the data set. Should this period become RLR in future it would be used.

Data Authority

Hydrographic Institute
Rua das Trinas 49
1249-093 Lisboa