The S by summer

Name: The S by summer
Address: TH

See Available Condos

In The S by summer

Location

Hang Dong

Limestone karst terrain nearby (geology, not a risk rating)

32 min

to Nok Airfield

commute

5 min

Hang Dong

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Neighborhood

Hang Dong

Hang Dong is Chiang Mai's most popular suburban district, stretching south from the city toward the hills. It's where most expat families with children settle — close enough to the city for convenience, far enough for space, gardens, and clean air. The district has a pleasant mix of modern housing estates, traditional craft villages (especially woodcarving and lacquerware), and rural Thai life. Hang Dong is the top choice for expat families in Chiang Mai. Prem Tinsulanonda International School and Lanna International School are both in or near the district. Housing estates offer 3-4 bedroom homes with gardens and pools at prices that would barely buy a studio in Bangkok. The area is safe, quiet, and has a strong family expat community. Detached houses: 3–8 million THB (2-4 bed with garden). Larger luxury homes: 10–20 million THB. Rental houses: 15,000–40,000 THB/month. Land is still relatively affordable at 2–6 million THB per rai depending on road access and proximity to main roads.

Explore Hang Dong

Location risk & context

river floodingLow(observed)

flash floodingLow(estimated)

droughtLow(based on the surrounding area)

poor air qualityMedium(observed)

fire riskNot enough data yet(basis not available)

extreme heatNot enough data yet(basis not available)

River flooding: Historical observations produced the Low screening band; this is not a future flood probability.; Evidence scope: Observed evidence · Confidence: Low
Flash flooding: Terrain-derived susceptibility band: Low. This is not a flood-depth forecast.; Evidence scope: Modelled screening · Confidence: High
Drought: Rainfall was below the local normal in 9.444444444444445% of analysed 10-day periods. Regional screening uses project-defined thresholds.; Evidence scope: Area context · Confidence: Medium
Air quality: Annual mean PM2.5: 20.57780246767044 µg/m³, source: OpenAQ. This is not a current air-quality reading.; Evidence scope: Area context · Confidence: Medium
Fire: No usable evidence is available.; Evidence scope: Insufficient evidence
Heat: No usable evidence is available.; Evidence scope: Insufficient evidence

Flood

River flood

Low — no significant flooding observed in the covered event

Confidence: low

River hazard is scored only against a single 2024 satellite-observed flood event covering four northern Thailand provinces (Chiang Mai, Chiang Rai, Lamphun, Phayao). "Unknown" outside that area means no observation exists yet — it does not mean the area is safe.

Flash flood

Low — some distance from watercourses or higher ground

Confidence: high

Height above nearest drainage: 1.5 m
Distance to nearest watercourse: 730 m
Slope: 0.4%

Flash-flood terrain data is derived from OpenStreetMap waterway data. See OpenStreetMap attribution

Area context

Government construction cost estimate, maximum: 13,000 THB/m² — In Chiang Mai province; Source: Treasury Department (กรมธนารักษ์) construction cost appraisal · License: Open Data Common (Treasury Department building valuation catalogue) · 2024-08-15 to 2027-12-31
Government construction cost estimate, typical: 7,900 THB/m² — In Chiang Mai province; Source: Treasury Department (กรมธนารักษ์) construction cost appraisal · License: Open Data Common (Treasury Department building valuation catalogue) · 2024-08-15 to 2027-12-31
Government construction cost estimate, minimum: 400 THB/m² — In Chiang Mai province; Source: Treasury Department (กรมธนารักษ์) construction cost appraisal · License: Open Data Common (Treasury Department building valuation catalogue) · 2024-08-15 to 2027-12-31
Treasury land appraisal (subdistrict), maximum — assessed value, not market price: 6,000 THB/sq_wah — In Hang Dong district; Source: Treasury Department (กรมธนารักษ์) land valuation (ราคาประเมินที่ดิน) - attach_all_20240805.csv · License: Open Data Common · 2024-08-14 to 2024-08-14
Treasury land appraisal (subdistrict), typical — assessed value, not market price: 2,500 THB/sq_wah — In Hang Dong district; Source: Treasury Department (กรมธนารักษ์) land valuation (ราคาประเมินที่ดิน) - attach_all_20240805.csv · License: Open Data Common · 2024-08-14 to 2024-08-14
Treasury land appraisal (subdistrict), minimum — assessed value, not market price: 1,250 THB/sq_wah — In Hang Dong district; Source: Treasury Department (กรมธนารักษ์) land valuation (ราคาประเมินที่ดิน) - attach_all_20240805.csv · License: Open Data Common · 2024-08-14 to 2024-08-14
Driest month: February — In Chiang Mai province; Source: Open-Meteo (ERA5 reanalysis, via archive-api.open-meteo.com) · License: CC BY 4.0 (Attribution 4.0 International) -- https://open-meteo.com/en/licence · 1991-01-01 to 2020-12-31
Climate rainfall annual total mean mm: 2,060.3 mm — In Chiang Mai province; Source: Open-Meteo (ERA5 reanalysis, via archive-api.open-meteo.com) · License: CC BY 4.0 (Attribution 4.0 International) -- https://open-meteo.com/en/licence · 1991-01-01 to 2020-12-31
Wettest month: August — In Chiang Mai province; Source: Open-Meteo (ERA5 reanalysis, via archive-api.open-meteo.com) · License: CC BY 4.0 (Attribution 4.0 International) -- https://open-meteo.com/en/licence · 1991-01-01 to 2020-12-31
Height above nearest drainage (typical): 0.8 m — In San Phak Wan subdistrict; Source: 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. · License: 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) · 2010-12-12 to 2015-01-07
Height above nearest drainage (lowest 10%): -2.2 m — In San Phak Wan subdistrict; Source: 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. · License: 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) · 2010-12-12 to 2015-01-07
Terrain slope (typical): 0.3% — In San Phak Wan subdistrict; Source: 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. · License: 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) · 2010-12-12 to 2015-01-07
Terrain slope (steepest 10%): 0.6% — In San Phak Wan subdistrict; Source: 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. · License: 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) · 2010-12-12 to 2015-01-07
Distance to nearest watercourse (typical): 349.7 m — In San Phak Wan subdistrict; Source: 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. · License: 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) · 2010-12-12 to 2015-01-07
Distance to nearest watercourse (closest 10%): 110.4 m — In San Phak Wan subdistrict; Source: 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. · License: 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) · 2010-12-12 to 2015-01-07
Flash-flood terrain susceptibility: moderate — In San Phak Wan subdistrict; Source: 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. · License: 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) · 2010-12-12 to 2015-01-07
Elevation, maximum: 315.8 m — In San Phak Wan subdistrict; Source: Mapterhorn terrain tiles (Copernicus DEM GLO-30 / WorldDEM-30, terrarium encoding, via tiles.mapterhorn.com) · License: Copernicus WorldDEM-30 Licence (COP-DEM-GLO-30-F, 'Global 30m Full, Free & Open' -- https://documentation.dataspace.copernicus.eu/APIs/SentinelHub/Data/DEM/resources/license/License-COPDEM-30.pdf); free of charge, reproduction/distribution/public-communication/adaptation all granted, commercial use permitted; required notice: "produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved." Tiles served by Mapterhorn (© Mapterhorn, https://mapterhorn.com/attribution) -- both notices required. · 2010-12-12 to 2015-01-07
Elevation, typical: 304.8 m — In San Phak Wan subdistrict; Source: Mapterhorn terrain tiles (Copernicus DEM GLO-30 / WorldDEM-30, terrarium encoding, via tiles.mapterhorn.com) · License: Copernicus WorldDEM-30 Licence (COP-DEM-GLO-30-F, 'Global 30m Full, Free & Open' -- https://documentation.dataspace.copernicus.eu/APIs/SentinelHub/Data/DEM/resources/license/License-COPDEM-30.pdf); free of charge, reproduction/distribution/public-communication/adaptation all granted, commercial use permitted; required notice: "produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved." Tiles served by Mapterhorn (© Mapterhorn, https://mapterhorn.com/attribution) -- both notices required. · 2010-12-12 to 2015-01-07
Elevation, minimum: 298 m — In San Phak Wan subdistrict; Source: Mapterhorn terrain tiles (Copernicus DEM GLO-30 / WorldDEM-30, terrarium encoding, via tiles.mapterhorn.com) · License: Copernicus WorldDEM-30 Licence (COP-DEM-GLO-30-F, 'Global 30m Full, Free & Open' -- https://documentation.dataspace.copernicus.eu/APIs/SentinelHub/Data/DEM/resources/license/License-COPDEM-30.pdf); free of charge, reproduction/distribution/public-communication/adaptation all granted, commercial use permitted; required notice: "produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved." Tiles served by Mapterhorn (© Mapterhorn, https://mapterhorn.com/attribution) -- both notices required. · 2010-12-12 to 2015-01-07
Elevation, range: 17.7 m — In San Phak Wan subdistrict; Source: Mapterhorn terrain tiles (Copernicus DEM GLO-30 / WorldDEM-30, terrarium encoding, via tiles.mapterhorn.com) · License: Copernicus WorldDEM-30 Licence (COP-DEM-GLO-30-F, 'Global 30m Full, Free & Open' -- https://documentation.dataspace.copernicus.eu/APIs/SentinelHub/Data/DEM/resources/license/License-COPDEM-30.pdf); free of charge, reproduction/distribution/public-communication/adaptation all granted, commercial use permitted; required notice: "produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved." Tiles served by Mapterhorn (© Mapterhorn, https://mapterhorn.com/attribution) -- both notices required. · 2010-12-12 to 2015-01-07
Share of 10-day periods with rainfall deficit (10-year): 9.4% — In Hang Dong district; Source: Climate Hazards Center UC Santa Barbara & WFP -- Thailand: Rainfall Indicators at Subnational Level (HDX) · License: CC BY (Creative Commons Attribution International) · 2016-01-01 to 2025-12-31
Worst 3-month rainfall deficit (10-year): 32.1% — In Hang Dong district; Source: Climate Hazards Center UC Santa Barbara & WFP -- Thailand: Rainfall Indicators at Subnational Level (HDX) · License: CC BY (Creative Commons Attribution International) · 2016-01-01 to 2025-12-31
Share of area analysed for flooding, 2024 event: 100% — In San Phak Wan subdistrict; Source: UNOSAT FL20240912THA -- Satellite detected water extents from 5 to 10 October 2024 over Chiang Mai and Lamphun Provinces (OBSERVED flood extent for ONE 2024 satellite pass -- not a general or future flood-risk indicator) · License: CC BY-SA (UNOSAT / United Nations Satellite Centre) · 2024-10-05 to 2024-10-10
Observed flooded area, 2024 event: 2.6 km2 — In San Phak Wan subdistrict; Source: UNOSAT FL20240912THA -- Satellite detected water extents from 5 to 10 October 2024 over Chiang Mai and Lamphun Provinces (OBSERVED flood extent for ONE 2024 satellite pass -- not a general or future flood-risk indicator) · License: CC BY-SA (UNOSAT / United Nations Satellite Centre) · 2024-10-05 to 2024-10-10
Share of area flooded, 2024 event: 18.7% — In San Phak Wan subdistrict; Source: UNOSAT FL20240912THA -- Satellite detected water extents from 5 to 10 October 2024 over Chiang Mai and Lamphun Provinces (OBSERVED flood extent for ONE 2024 satellite pass -- not a general or future flood-risk indicator) · License: CC BY-SA (UNOSAT / United Nations Satellite Centre) · 2024-10-05 to 2024-10-10
Flood exposure, 2024 event: high — In San Phak Wan subdistrict; Source: UNOSAT FL20240912THA -- Satellite detected water extents from 5 to 10 October 2024 over Chiang Mai and Lamphun Provinces (OBSERVED flood extent for ONE 2024 satellite pass -- not a general or future flood-risk indicator) · License: CC BY-SA (UNOSAT / United Nations Satellite Centre) · 2024-10-05 to 2024-10-10
PM2.5, annual average (low-cost sensor): 27.8 µg/m³ — In Chiang Mai province; Source: OpenAQ — ไดมอนด์.-2545166 (low-cost) · License: CC BY 4.0 (AirGradient via OpenAQ) · 2025-01-01 to 2026-01-01
PM2.5, annual average: 20.6 µg/m³ — In Chiang Mai province; Source: OpenAQ — NARIT ASTROPARK (Parking)-1224519 (reference) · License: CC BY 4.0 (AirGradient via OpenAQ) · 2025-01-01 to 2026-01-01
Recent 3-month rainfall vs. normal: 102% — In Hang Dong district; Source: Climate Hazards Center UC Santa Barbara & WFP -- Thailand: Rainfall Indicators at Subnational Level (HDX) · License: CC BY (Creative Commons Attribution International) · 2026-07-01 to 2026-09-21

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In The S by summer

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Neighborhood

Hang Dong

Explore Hang Dong

Location risk & context

river floodingLow(observed)

flash floodingLow(estimated)

droughtLow(based on the surrounding area)

poor air qualityMedium(observed)

fire riskNot enough data yet(basis not available)

extreme heatNot enough data yet(basis not available)

River flooding: Historical observations produced the Low screening band; this is not a future flood probability.; Evidence scope: Observed evidence · Confidence: Low
Flash flooding: Terrain-derived susceptibility band: Low. This is not a flood-depth forecast.; Evidence scope: Modelled screening · Confidence: High
Drought: Rainfall was below the local normal in 9.444444444444445% of analysed 10-day periods. Regional screening uses project-defined thresholds.; Evidence scope: Area context · Confidence: Medium
Air quality: Annual mean PM2.5: 20.57780246767044 µg/m³, source: OpenAQ. This is not a current air-quality reading.; Evidence scope: Area context · Confidence: Medium
Fire: No usable evidence is available.; Evidence scope: Insufficient evidence
Heat: No usable evidence is available.; Evidence scope: Insufficient evidence

Flood

River flood

Low — no significant flooding observed in the covered event

Confidence: low

Flash flood

Low — some distance from watercourses or higher ground

Confidence: high

Height above nearest drainage: 1.5 m
Distance to nearest watercourse: 730 m
Slope: 0.4%

Flash-flood terrain data is derived from OpenStreetMap waterway data. See OpenStreetMap attribution

Area context

Government construction cost estimate, maximum: 13,000 THB/m² — In Chiang Mai province; Source: Treasury Department (กรมธนารักษ์) construction cost appraisal · License: Open Data Common (Treasury Department building valuation catalogue) · 2024-08-15 to 2027-12-31
Government construction cost estimate, typical: 7,900 THB/m² — In Chiang Mai province; Source: Treasury Department (กรมธนารักษ์) construction cost appraisal · License: Open Data Common (Treasury Department building valuation catalogue) · 2024-08-15 to 2027-12-31
Government construction cost estimate, minimum: 400 THB/m² — In Chiang Mai province; Source: Treasury Department (กรมธนารักษ์) construction cost appraisal · License: Open Data Common (Treasury Department building valuation catalogue) · 2024-08-15 to 2027-12-31
Treasury land appraisal (subdistrict), maximum — assessed value, not market price: 6,000 THB/sq_wah — In Hang Dong district; Source: Treasury Department (กรมธนารักษ์) land valuation (ราคาประเมินที่ดิน) - attach_all_20240805.csv · License: Open Data Common · 2024-08-14 to 2024-08-14
Treasury land appraisal (subdistrict), typical — assessed value, not market price: 2,500 THB/sq_wah — In Hang Dong district; Source: Treasury Department (กรมธนารักษ์) land valuation (ราคาประเมินที่ดิน) - attach_all_20240805.csv · License: Open Data Common · 2024-08-14 to 2024-08-14
Treasury land appraisal (subdistrict), minimum — assessed value, not market price: 1,250 THB/sq_wah — In Hang Dong district; Source: Treasury Department (กรมธนารักษ์) land valuation (ราคาประเมินที่ดิน) - attach_all_20240805.csv · License: Open Data Common · 2024-08-14 to 2024-08-14
Driest month: February — In Chiang Mai province; Source: Open-Meteo (ERA5 reanalysis, via archive-api.open-meteo.com) · License: CC BY 4.0 (Attribution 4.0 International) -- https://open-meteo.com/en/licence · 1991-01-01 to 2020-12-31
Climate rainfall annual total mean mm: 2,060.3 mm — In Chiang Mai province; Source: Open-Meteo (ERA5 reanalysis, via archive-api.open-meteo.com) · License: CC BY 4.0 (Attribution 4.0 International) -- https://open-meteo.com/en/licence · 1991-01-01 to 2020-12-31
Wettest month: August — In Chiang Mai province; Source: Open-Meteo (ERA5 reanalysis, via archive-api.open-meteo.com) · License: CC BY 4.0 (Attribution 4.0 International) -- https://open-meteo.com/en/licence · 1991-01-01 to 2020-12-31
Height above nearest drainage (typical): 0.8 m — In San Phak Wan subdistrict; Source: 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. · License: 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) · 2010-12-12 to 2015-01-07
Height above nearest drainage (lowest 10%): -2.2 m — In San Phak Wan subdistrict; Source: 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. · License: 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) · 2010-12-12 to 2015-01-07
Terrain slope (typical): 0.3% — In San Phak Wan subdistrict; Source: 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. · License: 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) · 2010-12-12 to 2015-01-07
Terrain slope (steepest 10%): 0.6% — In San Phak Wan subdistrict; Source: 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. · License: 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) · 2010-12-12 to 2015-01-07
Distance to nearest watercourse (typical): 349.7 m — In San Phak Wan subdistrict; Source: 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. · License: 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) · 2010-12-12 to 2015-01-07
Distance to nearest watercourse (closest 10%): 110.4 m — In San Phak Wan subdistrict; Source: 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. · License: 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) · 2010-12-12 to 2015-01-07
Flash-flood terrain susceptibility: moderate — In San Phak Wan subdistrict; Source: 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. · License: 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) · 2010-12-12 to 2015-01-07
Elevation, maximum: 315.8 m — In San Phak Wan subdistrict; Source: Mapterhorn terrain tiles (Copernicus DEM GLO-30 / WorldDEM-30, terrarium encoding, via tiles.mapterhorn.com) · License: Copernicus WorldDEM-30 Licence (COP-DEM-GLO-30-F, 'Global 30m Full, Free & Open' -- https://documentation.dataspace.copernicus.eu/APIs/SentinelHub/Data/DEM/resources/license/License-COPDEM-30.pdf); free of charge, reproduction/distribution/public-communication/adaptation all granted, commercial use permitted; required notice: "produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved." Tiles served by Mapterhorn (© Mapterhorn, https://mapterhorn.com/attribution) -- both notices required. · 2010-12-12 to 2015-01-07
Elevation, typical: 304.8 m — In San Phak Wan subdistrict; Source: Mapterhorn terrain tiles (Copernicus DEM GLO-30 / WorldDEM-30, terrarium encoding, via tiles.mapterhorn.com) · License: Copernicus WorldDEM-30 Licence (COP-DEM-GLO-30-F, 'Global 30m Full, Free & Open' -- https://documentation.dataspace.copernicus.eu/APIs/SentinelHub/Data/DEM/resources/license/License-COPDEM-30.pdf); free of charge, reproduction/distribution/public-communication/adaptation all granted, commercial use permitted; required notice: "produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved." Tiles served by Mapterhorn (© Mapterhorn, https://mapterhorn.com/attribution) -- both notices required. · 2010-12-12 to 2015-01-07
Elevation, minimum: 298 m — In San Phak Wan subdistrict; Source: Mapterhorn terrain tiles (Copernicus DEM GLO-30 / WorldDEM-30, terrarium encoding, via tiles.mapterhorn.com) · License: Copernicus WorldDEM-30 Licence (COP-DEM-GLO-30-F, 'Global 30m Full, Free & Open' -- https://documentation.dataspace.copernicus.eu/APIs/SentinelHub/Data/DEM/resources/license/License-COPDEM-30.pdf); free of charge, reproduction/distribution/public-communication/adaptation all granted, commercial use permitted; required notice: "produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved." Tiles served by Mapterhorn (© Mapterhorn, https://mapterhorn.com/attribution) -- both notices required. · 2010-12-12 to 2015-01-07
Elevation, range: 17.7 m — In San Phak Wan subdistrict; Source: Mapterhorn terrain tiles (Copernicus DEM GLO-30 / WorldDEM-30, terrarium encoding, via tiles.mapterhorn.com) · License: Copernicus WorldDEM-30 Licence (COP-DEM-GLO-30-F, 'Global 30m Full, Free & Open' -- https://documentation.dataspace.copernicus.eu/APIs/SentinelHub/Data/DEM/resources/license/License-COPDEM-30.pdf); free of charge, reproduction/distribution/public-communication/adaptation all granted, commercial use permitted; required notice: "produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved." Tiles served by Mapterhorn (© Mapterhorn, https://mapterhorn.com/attribution) -- both notices required. · 2010-12-12 to 2015-01-07
Share of 10-day periods with rainfall deficit (10-year): 9.4% — In Hang Dong district; Source: Climate Hazards Center UC Santa Barbara & WFP -- Thailand: Rainfall Indicators at Subnational Level (HDX) · License: CC BY (Creative Commons Attribution International) · 2016-01-01 to 2025-12-31
Worst 3-month rainfall deficit (10-year): 32.1% — In Hang Dong district; Source: Climate Hazards Center UC Santa Barbara & WFP -- Thailand: Rainfall Indicators at Subnational Level (HDX) · License: CC BY (Creative Commons Attribution International) · 2016-01-01 to 2025-12-31
Share of area analysed for flooding, 2024 event: 100% — In San Phak Wan subdistrict; Source: UNOSAT FL20240912THA -- Satellite detected water extents from 5 to 10 October 2024 over Chiang Mai and Lamphun Provinces (OBSERVED flood extent for ONE 2024 satellite pass -- not a general or future flood-risk indicator) · License: CC BY-SA (UNOSAT / United Nations Satellite Centre) · 2024-10-05 to 2024-10-10
Observed flooded area, 2024 event: 2.6 km2 — In San Phak Wan subdistrict; Source: UNOSAT FL20240912THA -- Satellite detected water extents from 5 to 10 October 2024 over Chiang Mai and Lamphun Provinces (OBSERVED flood extent for ONE 2024 satellite pass -- not a general or future flood-risk indicator) · License: CC BY-SA (UNOSAT / United Nations Satellite Centre) · 2024-10-05 to 2024-10-10
Share of area flooded, 2024 event: 18.7% — In San Phak Wan subdistrict; Source: UNOSAT FL20240912THA -- Satellite detected water extents from 5 to 10 October 2024 over Chiang Mai and Lamphun Provinces (OBSERVED flood extent for ONE 2024 satellite pass -- not a general or future flood-risk indicator) · License: CC BY-SA (UNOSAT / United Nations Satellite Centre) · 2024-10-05 to 2024-10-10
Flood exposure, 2024 event: high — In San Phak Wan subdistrict; Source: UNOSAT FL20240912THA -- Satellite detected water extents from 5 to 10 October 2024 over Chiang Mai and Lamphun Provinces (OBSERVED flood extent for ONE 2024 satellite pass -- not a general or future flood-risk indicator) · License: CC BY-SA (UNOSAT / United Nations Satellite Centre) · 2024-10-05 to 2024-10-10
PM2.5, annual average (low-cost sensor): 27.8 µg/m³ — In Chiang Mai province; Source: OpenAQ — ไดมอนด์.-2545166 (low-cost) · License: CC BY 4.0 (AirGradient via OpenAQ) · 2025-01-01 to 2026-01-01
PM2.5, annual average: 20.6 µg/m³ — In Chiang Mai province; Source: OpenAQ — NARIT ASTROPARK (Parking)-1224519 (reference) · License: CC BY 4.0 (AirGradient via OpenAQ) · 2025-01-01 to 2026-01-01
Recent 3-month rainfall vs. normal: 102% — In Hang Dong district; Source: Climate Hazards Center UC Santa Barbara & WFP -- Thailand: Rainfall Indicators at Subnational Level (HDX) · License: CC BY (Creative Commons Attribution International) · 2026-07-01 to 2026-09-21

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