SIMONS BAY

WARNING: QCFLAG EXISTS. PLEASE READ THE DOCUMENTATION.

Station Information

Station ID: 826
Latitude: -34.187778
Longitude: 18.440139
GLOSS ID: 268
Coastline code: 430
Station code: 61
Country: SOUTH AFRICA
Time span of data: 1957 – 2015
Completeness (%): 78
Frequency Code: 24
Date of last update: 05 Apr 2016

Green Arrow: Current Station
Yellow Marker: Neighbouring RLR 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: SIMO
Fast Delivery Data from UHSLC station 221: hourly and daily
Research Quality Data from UHSLC station 221: hourly and daily

Station Documentation

Link to RLR information.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 28-AUG-96 :
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. 1957 - 1972 VALUES BASED ON 8 READINGS PER DAY
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-JUN-91 :
Simons Bay 430/061 RLR(1964) is 9.6m below BMZZZ
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 2000Jun14 :
Data for Jan-April 1990 removed as suspect.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 24-Sep-2009 :
Heights of chart datum relative to land levelling datum LLD(MSL)in South Africa and Namibia: Simons Town (Bay) Datum: 1st Jan 1973 - 31st Dec 1978 = -0.651 Datum: 1st Jan 1979 - 31st Dec 1997 = -0.900 Datum: 1st Jan 1998 - 31st Dec 2002 = -1.003 Datum: 1st Jan 2003 onwards = -0.843 Datum is now LAT so unlikely to change.

Data Authority

Hydrographic Office
Maritime Headquarters
Private Bag X1
Tokai 7966
SOUTH AFRICA