Data



Data Notes



Extracted from Database

01 Jul 2019

PORT-ALFRED

Station Information

Station ID: 1392
Latitude: 48.333333
Longitude: -70.866667
Coastline code: 970
Station code: 95
Country: CANADA
Time span of data: 1975 – 2018
Completeness (%): 69
Date of last update: 18 Jun 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 PORT-ALFRED.

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

Plot of annual mean sea level data at PORT-ALFRED.

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.

Station Documentation

Link to RLR information.

Documentation added 1994-03-23

data up to 1992 revised, March 1994

Documentation added 2008-09-18

RLR calculated for this station 17.9.08

Documentation added 2011-09-06

Primary benchmark remains 79L003 21.571m above TGZ

Documentation added 2014-07-30

The tide gauge at Port Alfred is currently not operational. We have been informed that there are no plans at this time to have it back on the network.

Documentation added 2015-07-27

This year, rather than just sending the latest year of data the complete dataset has been supplied. This has highlighted some differences in the data. From communications in the correspondence file for 2002 it appears that the Oceans and Fisheries meant to supply revised data for the stations supplied. This did not happen. The complete dataset includes these data revisions. Therefore, the whole dataset has now been re-entered.
The tide gauge at Port Alfred has now been removed.

Documentation added 2019-06-18

Station Port Alfred was re-installed in mid July 2017 due to some external pressure and the fact that it is a reference port in the Canadian Tide Tables. The new station has been levelled to the previous benchmarks.

Data Authority

Canadian Hydrographic Service
615 Booth Street
Ottawa
Ontario K1A 0E6