Data



Data Notes



Extracted from Database

20 May 2019

EAST LONDON

Station Information

Station ID: 1192
Latitude: -33.027222
Longitude: 27.931667
Coastline code: 430
Station code: 90
Country: SOUTH AFRICA
Time span of data: 1967 – 2017
Completeness (%): 55
Date of last update: 15 May 2018

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 EAST LONDON.

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

Plot of annual mean sea level data at EAST LONDON.

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: ELDN, ELDA
Fast Delivery Data from UHSLC station 187: hourly and daily
Research Quality Data from UHSLC station 187: hourly and daily

Station Documentation

Link to RLR information.

Documentation added 1991-06-11

East London 430/090 RLR(1967) is 11.2m below BM'TG Pit'

Documentation added 1996-08-28

For discussions of MSL changes and extreme sea levels around Namibia
and South Africa, see: G.B.Brundrit, S.Afr.J.Mar.Sci.,16,9-17,1995
and S.Searson and G.B.Brundrit, S.Afr.J.of Science, 91,579-588,1995.

Documentation added 2009-09-24

Heights of chart datum relative to land levelling
datum in South Africa and Namibia: East London
Datum: up to 31st Dec 1978 = -0.762
Datum: 1st Jan 1979 - 31st Dec 1997 = -0.900
Datum: 1st Jan 1998 - 31st Dec 2002 = -1.006
Datum: 1st Jan 2003 onwards = -0.716
Datum is now LAT so unlikely to change.

Documentation added 2010-05-11

There appears to be a spike in the dataset for November 2002. This is possibly
real as it appears in several of the S. African stations.

Data Authority

Hydrographic Office
Maritime Headquarters
Private Bag X1
Tokai 7966