How to check for flooded areas

Naturally, no one wants their home to flood, as it causes damage to both lives and property. Therefore, if you are planning to purchase a house, condo, or land, you can investigate the location beforehand using the flood-checking methods shared here today.

GISTDA (Geo-Informatics and Space Technology Development Agency) allows you to check not only the latest flood information but also historical flood data.

By selecting the "Recurrent Flood Areas" menu at https://disaster.gistda.or.th, you can view historical data and flood frequency, with areas displayed in different colors.

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Recurrent Flood Areas
You can check this information in three ways:
• Flooding during 2011–2020: Shows an overview of recurrent flooding across Thailand over a 10-year period.
• Annual Recurrent Flooding: Displays areas with recurrent flooding based on a selected number of years (ranging from 1 to 9 years of recurrence).
• Annual Flood Area Comparison: Allows you to compare flood occurrences between two specific years within the 2011–2020 range.

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You can view maps of recurrent flood areas in agricultural zones as well as statistics on recurrent flooding by sub-district. Data can be downloaded in both PDF and Excel formats, with the tables including details such as province names. (Sorted alphabetically by the first letter) Districts, sub-districts, and the frequency of past flooding over the last 10 years.

The data presents three categories of recurrent flooding—fewer than 3 occurrences, 4–7 occurrences, and 8–10 occurrences—over the past decade, providing an overview at the sub-district level.
Now you know how to check for areas prone to frequent flooding; try using this information when evaluating land or a potential location for your future home.

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Thanks to kapook.com for the useful information.