数据来源：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. · 许可协议：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 至 2015-01-07
距最近排水道高度（最低 10%）
-1.2 m — Nong Pa Khrang分区范围内
数据来源：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. · 许可协议：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 至 2015-01-07
地形坡度（中位数）
0.3% — Nong Pa Khrang分区范围内
数据来源：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. · 许可协议：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 至 2015-01-07
数据来源：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. · 许可协议：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 至 2015-01-07
距最近水道距离（中位数）
598.2 m — Nong Pa Khrang分区范围内
数据来源：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. · 许可协议：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 至 2015-01-07
距最近水道距离（最近 10%）
290.7 m — Nong Pa Khrang分区范围内
数据来源：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. · 许可协议：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 至 2015-01-07
山洪地形易发程度
低 — Nong Pa Khrang分区范围内
数据来源：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. · 许可协议：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 至 2015-01-07
数据来源：UNOSAT FL20240912THA -- Satellite detected water extents in Doi Tao District, Chiang Mai Province as of 6 October 2024 (OBSERVED flood extent for ONE 2024 satellite pass -- not a general or future flood-risk indicator) · 许可协议：CC BY-SA (UNOSAT / United Nations Satellite Centre) · 2024-10-06 至 2024-10-06
2024 年事件观测洪水面积
53.8 km2 — Chiang Mai府范围内
数据来源：UNOSAT FL20240912THA -- Satellite detected water extents in Doi Tao District, Chiang Mai Province as of 6 October 2024 (OBSERVED flood extent for ONE 2024 satellite pass -- not a general or future flood-risk indicator) · 许可协议：CC BY-SA (UNOSAT / United Nations Satellite Centre) · 2024-10-06 至 2024-10-06
2024 年事件受淹面积占比
0.2% — Chiang Mai府范围内
数据来源：UNOSAT FL20240912THA -- Satellite detected water extents in Doi Tao District, Chiang Mai Province as of 6 October 2024 (OBSERVED flood extent for ONE 2024 satellite pass -- not a general or future flood-risk indicator) · 许可协议：CC BY-SA (UNOSAT / United Nations Satellite Centre) · 2024-10-06 至 2024-10-06
2024 年事件洪水暴露等级
低 — Chiang Mai府范围内
数据来源：UNOSAT FL20240912THA -- Satellite detected water extents in Doi Tao District, Chiang Mai Province as of 6 October 2024 (OBSERVED flood extent for ONE 2024 satellite pass -- not a general or future flood-risk indicator) · 许可协议：CC BY-SA (UNOSAT / United Nations Satellite Centre) · 2024-10-06 至 2024-10-06
PM2.5 年平均值（低成本传感器）
27.8 µg/m³ — Chiang Mai府范围内
数据来源：OpenAQ — ไดมอนด์.-2545166 (low-cost) · 许可协议：CC BY 4.0 (AirGradient via OpenAQ) · 2025-01-01 至 2026-01-01
PM2.5 年平均值
20.6 µg/m³ — Chiang Mai府范围内
数据来源：OpenAQ — NARIT ASTROPARK (Parking)-1224519 (reference) · 许可协议：CC BY 4.0 (AirGradient via OpenAQ) · 2025-01-01 至 2026-01-01
近 10 年降雨不足旬数占比
8.9% — Mueang Chiang Mai县/区范围内
数据来源：Climate Hazards Center UC Santa Barbara & WFP -- Thailand: Rainfall Indicators at Subnational Level (HDX) · 许可协议：CC BY (Creative Commons Attribution International) · 2016-01-01 至 2025-12-31
近 10 年最严重 3 个月降雨不足程度
33.2% — Mueang Chiang Mai县/区范围内
数据来源：Climate Hazards Center UC Santa Barbara & WFP -- Thailand: Rainfall Indicators at Subnational Level (HDX) · 许可协议：CC BY (Creative Commons Attribution International) · 2016-01-01 至 2025-12-31
近 3 个月降雨量占常年比例
96.3% — Mueang Chiang Mai县/区范围内
数据来源：Climate Hazards Center UC Santa Barbara & WFP -- Thailand: Rainfall Indicators at Subnational Level (HDX) · 许可协议：CC BY (Creative Commons Attribution International) · 2026-07-01 至 2026-09-21
