Rayong flood risk by district
Of Rayong's 8 districts, 8 have a high estimated chance of river flooding and 0 a high chance of flash flooding. The highest risk is in Mueang Rayong, where the river flooding level is High (estimated).
Data period: Dec 2010 – Jan 2015 · Source: Terrain-derived flash-flood indicators from Copernicus DEM GLO-30 (via Mapterhorn terrain tiles) and OpenStreetMap waterway data · Licence: Copernicus WorldDEM-30 Licence, commercial use permitted combined with OpenStreetMap contributors: ODbL 1.0
The 2024 observed flood event covers only four northern provinces (Chiang Mai, Chiang Rai, Lamphun, and Phayao); flash-flood terrain indicators are modelled from nationwide terrain data and are not a forecast. OpenStreetMap contributors
Risk map
river flooding by area
flash flooding by area
- Medium
- Khao Chamao, Nikhom Phatthana
Topographic view shades terrain by elevation — higher, steeper ground is generally less exposed to flooding, while low-lying land near watercourses is more exposed.
How likely is river flooding in Rayong?
8 districts in Rayong have a high estimated chance of river flooding, including Mueang Rayong.
No districts in Rayong currently have a high estimated chance of flash flooding.
Which districts are most at risk?
Mueang Rayong in Rayong has the highest single hazard estimate, a High level of river flooding.
What the levels mean
Each district gets a Low, Medium, or High estimate for every hazard. "Observed" levels come from a directly measured event, such as a satellite-recorded flood extent. "Estimated" levels are modelled from proxies such as terrain, historical rainfall, or monitoring-station readings, and are not a forecast or a probability. A level never combines more than one hazard, and "Not enough data yet" means exactly that — not a safe rating.
What this means if you're buying or renting
A High estimate for Rayong is a prompt to ask more questions — request a site-specific flood or engineering survey, check the property's ground floor level and past flood history with the seller or agent, and review local drainage before committing. A Low estimate does not guarantee a property is risk-free, and none of these levels replace a professional inspection.
Full district data
| District | Flash-flood terrain susceptibility | Height above nearest drainage (p10) | Distance to nearest stream (p10) | 2024 observed flood area share |
|---|---|---|---|---|
| Khao Chamao | Moderate | -231.24 m | 2,693.53 m | — |
| Ban Chang | Low | -46.14 m | 394.38 m | — |
| Ban Khai | Low | -21.8 m | 1,263.56 m | — |
| Mueang Rayong | Low | -4.17 m | 1,014.33 m | — |
| Klaeng | Low | -1.89 m | 1,224 m | — |
| Nikhom Phatthana | Moderate | -1.07 m | 81.38 m | — |
| Pluak Daeng | Low | -0.59 m | 707.05 m | — |
| Wang Chan | Low | -0.1 m | 2,010.21 m | — |
Frequently asked questions
Which district in Rayong has the highest Flash-flood terrain susceptibility?
Khao Chamao has the highest Flash-flood terrain susceptibility in Rayong, at Moderate.
Which district in Rayong has the lowest Flash-flood terrain susceptibility?
Mueang Rayong has the lowest Flash-flood terrain susceptibility in Rayong, at Low.
Where does this data come from?
Terrain-derived flash-flood indicators (HAND + slope + OSM drainage proximity; NOT a forecast or probability, not calibrated against observed events) from Copernicus DEM GLO-30 (via Mapterhorn terrain tiles) and OpenStreetMap waterway data. The banded metric flags whether the region CONTAINS terrain susceptible to flash flooding somewhere within it -- not the susceptibility of the region as a whole, and not of any individual property. (Copernicus WorldDEM-30 Licence, commercial use permitted (see ./region-elevation.ts's ELEVATION_SOURCE_LICENSE for the full citation) combined with OpenStreetMap contributors: ODbL 1.0 (https://www.openstreetmap.org/copyright)), covering 2010-12-12 – 2015-01-07.
How likely is flooding or other hazards in Rayong?
In Rayong, 8 districts have a high estimated chance of river flooding and 0 districts have a high estimated chance of flash flooding.
Which districts in Rayong have a high estimated chance of river flooding?
8 districts in Rayong have a high estimated chance of river flooding, including Mueang Rayong.
Is the river flooding estimate for Rayong observed or modelled?
The river flooding estimate for Rayong's highest-risk district is estimated.
Which districts in Rayong have a high estimated chance of flash flooding?
No districts in Rayong currently have a high estimated chance of flash flooding.
Is the flash flooding estimate for Rayong observed or modelled?
The flash flooding estimate for Rayong's highest-risk district is estimated.
Which district in Rayong has the highest estimated hazard risk overall?
Mueang Rayong in Rayong has the highest single hazard estimate, a High level of river flooding.
What should I consider if I'm buying or renting property in Rayong?
In areas of Rayong with a High hazard estimate, ask for a site-specific survey and the property's flood history before committing — a High estimate is a prompt to investigate further, not a verdict on any single property.
Where does the hazard data for Rayong come from?
The hazard estimates for Rayong are sourced from Terrain-derived flash-flood indicators (HAND + slope + OSM drainage proximity; NOT a forecast or probability, not calibrated against observed events) from Copernicus DEM GLO-30 (via Mapterhorn terrain tiles) and OpenStreetMap waterway data. The banded metric flags whether the region CONTAINS terrain susceptible to flash flooding somewhere within it -- not the susceptibility of the region as a whole, and not of any individual property. (Copernicus WorldDEM-30 Licence, commercial use permitted (see ./region-elevation.ts's ELEVATION_SOURCE_LICENSE for the full citation) combined with OpenStreetMap contributors: ODbL 1.0 (https://www.openstreetmap.org/copyright)).
What do the Low, Medium, and High hazard levels mean?
Low, Medium, and High are screening estimates, not a forecast or probability. Each hazard is scored on its own — there is no single combined risk score across hazards.
Sources & methodology
- Terrain-derived flash-flood indicators (HAND + slope + OSM drainage proximity; NOT a forecast or probability, not calibrated against observed events) from Copernicus DEM GLO-30 (via Mapterhorn terrain tiles) and OpenStreetMap waterway data. The banded metric flags whether the region CONTAINS terrain susceptible to flash flooding somewhere within it -- not the susceptibility of the region as a whole, and not of any individual property., Copernicus WorldDEM-30 Licence, commercial use permitted (see ./region-elevation.ts's ELEVATION_SOURCE_LICENSE for the full citation) combined with OpenStreetMap contributors: ODbL 1.0 (https://www.openstreetmap.org/copyright). Period: 2010-12-12 – 2015-01-07. https://www.openstreetmap.org/copyright