GISTDA

About GISTDA

GISTDA's open API provides flood disaster data for Thailand, published by the country's space technology and geo-informatics agency as part of its open government data policy. It exposes flood-affected area data over rolling 1-day, 3-day, 7-day, and 30-day windows, along with recurring flood zone summaries and data on waterway obstructions such as water hyacinth. Data is returned in JSON format.

The API also offers mapping endpoints in WMS, WMTS, and TMS formats for the same flood and recurring-flood-zone datasets, allowing the data to be consumed as map tiles and layers in addition to raw feature data. Access requires logging in or registering for an API key, and documentation is provided.

This service is intended for developers and organizations building applications or systems that need spatial data on flooding and water obstruction in Thailand, such as disaster monitoring, mapping, or early-warning tools.

Key features

• Flood extent data for 1, 3, 7, and 30-day lookback periods via GET /features/flood endpoints
• Recurring flood area summary data via GET /features/flood-freq
• Water hyacinth (waterway obstruction) area data via GET /features/water_hyacinth
• Map imagery via WMS endpoints for flood and recurring flood areas
• Map imagery via WMTS tiled endpoints for flood and recurring flood areas
• Map imagery via TMS tiled endpoints ({z}/{x}/{y}) for flood and recurring flood areas

Frequently asked questions