Station Information

Station ID: 950
Latitude: -34.049444
Longitude: 23.045556
Coastline code: 430
Station code: 86
Time span of data: 1960 – 2016
Completeness (%): 71
Frequency Code: 24
Date of last update: 23 Feb 2017

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)

Fast Delivery Data from UHSLC station 186: hourly and daily
Research Quality Data from UHSLC station 186: 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. 1960 - 1972 VALUES BASED ON 8 READINGS PER DAY
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-JUN-91 :
Knysna 430/086 RLR(1964) is 9.7m below BM SAN1
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 28-Nov-2006 :
Station flagged data generally suspect. Large spike in dataset Nov/Dec 2002 values very suspect.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 24-Sep-2009 :
Heights of chart datum relative to land levelling datum in South Africa and Namibia: Knysna Datum: up to 31st Dec 1978 = -0.625 Datum: 1st Jan 1979 - 31st Dec 1997 = -0.900 Datum: 1st Jan 1998 - 31st Dec 2002 = -1.048 Datum: 1st Jan 2003 onwards = -0.788 Datum is now LAT so unlikely to change.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-May-2010 :
There appears to be a spike in Nov/Dec 2002 see above. 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