Data and Station Information for KO LAK

Station Information

Station ID:	174
Latitude:	11.8
Longitude:	99.816667
GLOSS ID:	39
Coastline code:	600
Station code:	21
Country:	THAILAND
Time span of RLR data:	1940 – 2024
RLR completeness (%):	97
Time span of metric data:	1910 – 2024
Metric completeness (%):	76
Date of last update:	04 Aug 2025

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 KO LAK.

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

Plot of annual mean sea level data at KO LAK.

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)

Fast Delivery Data from UHSLC station 328: hourly and daily
Research Quality Data from UHSLC station 328: hourly and daily

Station Documentation

Link to RLR information.

Documentation - date unknown

Data for 1910-1915 supplied by the Royal Thai Navy Bangkok

Documentation added 1991-06-11

Ko Lak 600/021 RLR(1981) is 8.4m below BM A

Documentation added 2009-07-01

Although the data for Ko Lak 2008 was supplied directly from The Hydrographic Dept. of the Royal Thai Navy the missing days information was erroneous. When queried with them they insisted
that the figures were correct (missing days included 720,95 days) so figures were obviously wrong. Decision was taken to use the missing day information for 2008 from the JASL CD.

Data Authority

Oceanographic Division
Hydrographic Department
Royal Thai Navy
222 Rimtang-Rodfai-kao Road
Bangna, Bangkok 10260

Data

Data Notes

Extracted from Database

KO LAK