Understanding Our Bangkok Tide Tables
These has been some discussion in various discussion forums on the Internet about why our Bangkok Tide Tables show different tidal data than some other tidal data sites. One reason might be because there are more than one tidal stations in the Bangkok area. Our tide server has harmonic tidal data for two locations, “Bangkok” and “Tachin“. The tidal data for “Bangkok” may actually be located about 10 KM south of the mouth of the Chao Phraya river; and the data for “Ta Chin” is possibly located about 35 KM west of the mouth of the Chao Phraya river at the mouth of the “Tha Chin” river. These estimated locations are based on the geographic coordinates used in our XTide server as superimposed on Google Maps.
If you take a look and compare these two tables, “Bangkok”” and “Ta Chin”, you will see that the tidal data for “Bangkok” is generally higher (around 0.8 to 0.9 meters) than for “Ta Chin”, which is in Samut Sakhon at the mouth of the Ta Chin River on the Gulf of Thailand.
For completeness, in the future we will add some special charts that compare the two locations, similar to what we do for the Pattaya area tides, where we show both Ko Si Chang and Sattahip tide charts on the same page.