Nepal Flood 2026 Flood Affected Area, Bhote Koshi and Trishuli | Publicly Available Data Resources for the 2026 Nepal Glacier-Related Hazard Cascade

Identity and coverage

Catalogue identifier: res-0fecb5dd-93e9-5dfd-8ac0-15a9bcd2a1a9
Persistent identifier: bdf5a5c1-d0c1-4a52-8e3e-80ea718791c3
Resource version: Mutable daily HDX export; metadata state observed 3 September 2026
Publication date: 26 August 2026
Last updated: 3 September 2026
Metadata reviewed: 3 September 2026
Language: English
Geographic coverage: Bhote Koshi, Trishuli, and downstream river corridor from Rasuwagadhi to the Narayani confluence across Bagmati and Gandaki Provinces.
Bounding box (WGS 84): [84.411824, 27.7216325, 85.4306907, 28.3305113]
Temporal coverage: 27 August 2026 to 3 September 2026; Mixed
Themes: Flood Extent, Infrastructure, Exposure, Response Mapping, Field Reports, Baseline Geography

Method and provenance

Production method: The 27 August observed flood extent was interpreted from drone, Landsat, PlanetScope, and Sentinel imagery and widened by 200 m to define the extraction area. Vector layers were assembled from OpenStreetMap, Overture Maps, Tasking Manager data, and selected volunteer field reports.
Provenance: Published by HOT through HDX. Component layers identify OpenStreetMap, Overture Maps, HOT Tasking Manager, NAXA, or volunteer field reporting as applicable upstream sources.
Validation: Unclear
Uncertainty: The flood boundary is an image interpretation for one date, while water levels changed during the event. OpenStreetMap coverage changes with volunteer activity, and Overture combines multiple upstream sources, including machine-generated data.
Limitations: The 200 m margin is contextual and is not evidence that every enclosed feature was flooded or damaged. Component layers have different currency, completeness, and provenance.

Access and reuse

Access: Direct Open; open access route
Licence: Open Database License (ODbL 1.0); licence evidence
Redistribution: Permitted Under Stated Package Licence
Catalogue status: Reviewed
Provider page: Open authoritative resource page

Assets

OpenStreetMap destroyed and damaged features — KML

WGS 84 bounding box: [85.070124, 27.8540507, 85.4078962, 28.3064407]

KML · 189.3 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap police stations — GeoPackage

WGS 84 bounding box: [84.5588991, 27.8063716, 85.3418735, 28.165547]

Geopackage · 9.5 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap points of interest — GeoJSON

WGS 84 bounding box: [84.5562315, 27.7989026, 85.3783873, 28.2811009]

GeoJSON · 32.1 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap helipads — GeoJSON

WGS 84 bounding box: [84.5897437, 27.8015878, 85.3771645, 28.2809353]

GeoJSON · 5.6 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap settlement names — GeoJSON

WGS 84 bounding box: [84.560951, 27.7955502, 85.3777789, 28.2777749]

GeoJSON · 9.4 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap health facilities — Shapefile

WGS 84 bounding box: [84.7043051, 27.8056745, 84.8802531, 27.8136943]

SHP · 6.2 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Bridge damage assessment — GeoJSON

WGS 84 bounding box: [84.6409583, 27.7979278, 85.3780972, 28.2789444]

GeoJSON · 27.7 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap points of interest — KML

WGS 84 bounding box: [84.5562315, 27.7989026, 85.3783873, 28.2811009]

KML · 33.9 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Overture Maps education facilities — GeoPackage

WGS 84 bounding box: [84.75984335, 27.8090096, 85.15944672, 27.94805527]

Geopackage · 11.1 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Overture Maps education facilities — GeoJSON

WGS 84 bounding box: [84.75984335, 27.8090096, 85.15944672, 27.94805527]

GeoJSON · 6.1 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Overture Maps points of interest — GeoPackage

WGS 84 bounding box: [84.556559, 27.79648, 85.378, 28.27606]

Geopackage · 31.3 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap roads — Shapefile

WGS 84 bounding box: [84.5514228, 27.7681061, 85.4078962, 28.3064407]

SHP · 783.0 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap settlement names — Shapefile

WGS 84 bounding box: [84.560951, 27.7955502, 85.3777789, 28.2777749]

SHP · 13.4 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap residential areas — GeoJSON

WGS 84 bounding box: [84.5548752, 27.7947194, 85.3770572, 28.2704141]

GeoJSON · 112.9 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap destroyed and damaged features — Shapefile

WGS 84 bounding box: [85.070124, 27.8540507, 85.4078962, 28.3064407]

SHP · 276.9 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Overture Maps points of interest — Shapefile

WGS 84 bounding box: [84.556559, 27.79648, 85.378, 28.27606]

SHP · 27.2 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap helipads — KML

WGS 84 bounding box: [84.5897437, 27.8015878, 85.3771645, 28.2809353]

KML · 5.9 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap residential areas — GeoPackage

WGS 84 bounding box: [84.5548752, 27.7947194, 85.3770572, 28.2704141]

Geopackage · 170.1 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap roads — GeoPackage

WGS 84 bounding box: [84.5514228, 27.7681061, 85.4078962, 28.3064407]

Geopackage · 808.7 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap open spaces — KML

WGS 84 bounding box: [84.554501, 27.8020772, 85.3389648, 28.1640733]

KML · 34.2 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap education facilities — KML

WGS 84 bounding box: [84.5593052, 27.8002795, 85.3413965, 28.1653484]

KML · 10.4 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap waterways — GeoJSON

WGS 84 bounding box: [84.4219815, 27.7216325, 85.4306907, 28.3305113]

GeoJSON · 288.6 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap police stations — GeoJSON

WGS 84 bounding box: [84.5588991, 27.8063716, 85.3418735, 28.165547]

GeoJSON · 4.4 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap waterways — GeoPackage

WGS 84 bounding box: [84.4219815, 27.7216325, 85.4306907, 28.3305113]

Geopackage · 388.2 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap bridges — Shapefile

WGS 84 bounding box: [84.5565078, 27.7972038, 85.3783412, 28.2791611]

SHP · 22.2 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap points of interest — GeoPackage

WGS 84 bounding box: [84.5562315, 27.7989026, 85.3783873, 28.2811009]

Geopackage · 47.1 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap buildings — KML

WGS 84 bounding box: [84.5549134, 27.7933997, 85.3805573, 28.2818703]

KML · 1.2 MiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap open spaces — GeoPackage

WGS 84 bounding box: [84.554501, 27.8020772, 85.3389648, 28.1640733]

Geopackage · 50.8 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap destroyed and damaged features — GeoPackage

WGS 84 bounding box: [85.070124, 27.8540507, 85.4078962, 28.3064407]

Geopackage · 278.9 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Overture Maps buildings — Shapefile

WGS 84 bounding box: [84.5551155, 27.7933997, 85.3809712, 28.2818703]

SHP · 2.3 MiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap buildings — Shapefile

WGS 84 bounding box: [84.5549134, 27.7933997, 85.3805573, 28.2818703]

SHP · 1.9 MiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Observed flood extent, 27 August 2026 — GeoJSON

WGS 84 bounding box: [84.556395, 27.79515, 85.379843, 28.280699]

GeoJSON · 46.7 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap bridges — GeoJSON

WGS 84 bounding box: [84.5565078, 27.7972038, 85.3783412, 28.2791611]

GeoJSON · 15.0 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap residential areas — Shapefile

WGS 84 bounding box: [84.5548752, 27.7947194, 85.3770572, 28.2704141]

SHP · 157.3 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

All mapped layers — PMTiles vector tiles

WGS 84 bounding box: [84.4219815, 27.7216325, 85.4306907, 28.3305113]

PMTiles · 4.2 MiB · Web Map Tiles · Reachable without registration

Open asset Metadata assessed

OpenStreetMap education facilities — GeoJSON

WGS 84 bounding box: [84.5593052, 27.8002795, 85.3413965, 28.1653484]

GeoJSON · 9.6 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap education facilities — GeoPackage

WGS 84 bounding box: [84.5593052, 27.8002795, 85.3413965, 28.1653484]

Geopackage · 17.2 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap open spaces — Shapefile

WGS 84 bounding box: [84.554501, 27.8020772, 85.3389648, 28.1640733]

SHP · 47.1 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap helipads — GeoPackage

WGS 84 bounding box: [84.5897437, 27.8015878, 85.3771645, 28.2809353]

Geopackage · 11.7 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap bridges — GeoPackage

WGS 84 bounding box: [84.5565078, 27.7972038, 85.3783412, 28.2791611]

Geopackage · 26.6 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap points of interest — Shapefile

WGS 84 bounding box: [84.5562315, 27.7989026, 85.3783873, 28.2811009]

SHP · 44.9 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap roads — KML

WGS 84 bounding box: [84.5514228, 27.7681061, 85.4078962, 28.3064407]

KML · 563.7 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Overture Maps health facilities — KML

WGS 84 bounding box: [84.83661402, 27.80514279, 85.14725089, 27.9226656]

KML · 4.6 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap financial-service locations — Shapefile

WGS 84 bounding box: [84.5608644, 27.8032728, 85.3364072, 28.1611718]

SHP · 6.3 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap residential areas — KML

WGS 84 bounding box: [84.5548752, 27.7947194, 85.3770572, 28.2704141]

KML · 115.4 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Overture Maps health facilities — Shapefile

WGS 84 bounding box: [84.83661402, 27.80514279, 85.14725089, 27.9226656]

SHP · 5.1 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap police stations — KML

WGS 84 bounding box: [84.5588991, 27.8063716, 85.3418735, 28.165547]

KML · 4.8 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Overture Maps health facilities — GeoPackage

WGS 84 bounding box: [84.83661402, 27.80514279, 85.14725089, 27.9226656]

Geopackage · 9.2 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap waterways — Shapefile

WGS 84 bounding box: [84.4219815, 27.7216325, 85.4306907, 28.3305113]

SHP · 378.7 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Overture Maps points of interest — GeoJSON

WGS 84 bounding box: [84.556559, 27.79648, 85.378, 28.27606]

GeoJSON · 24.2 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Overture Maps buildings — KML

WGS 84 bounding box: [84.5551155, 27.7933997, 85.3809712, 28.2818703]

KML · 1.5 MiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Overture Maps education facilities — Shapefile

WGS 84 bounding box: [84.75984335, 27.8090096, 85.15944672, 27.94805527]

SHP · 7.0 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap health facilities — KML

WGS 84 bounding box: [84.7043051, 27.8056745, 84.8802531, 27.8136943]

KML · 4.6 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap financial-service locations — GeoPackage

WGS 84 bounding box: [84.5608644, 27.8032728, 85.3364072, 28.1611718]

Geopackage · 10.7 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap health facilities — GeoPackage

WGS 84 bounding box: [84.7043051, 27.8056745, 84.8802531, 27.8136943]

Geopackage · 9.2 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap settlement names — GeoPackage

WGS 84 bounding box: [84.560951, 27.7955502, 85.3777789, 28.2777749]

Geopackage · 17.2 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Overture Maps buildings — GeoPackage

WGS 84 bounding box: [84.5551155, 27.7933997, 85.3809712, 28.2818703]

Geopackage · 2.3 MiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap waterways — KML

WGS 84 bounding box: [84.4219815, 27.7216325, 85.4306907, 28.3305113]

KML · 279.0 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap police stations — Shapefile

WGS 84 bounding box: [84.5588991, 27.8063716, 85.3418735, 28.165547]

SHP · 6.4 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Overture Maps education facilities — KML

WGS 84 bounding box: [84.75984335, 27.8090096, 85.15944672, 27.94805527]

KML · 6.4 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap health facilities — GeoJSON

WGS 84 bounding box: [84.7043051, 27.8056745, 84.8802531, 27.8136943]

GeoJSON · 4.2 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap open spaces — GeoJSON

WGS 84 bounding box: [84.554501, 27.8020772, 85.3389648, 28.1640733]

GeoJSON · 34.3 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap helipads — Shapefile

WGS 84 bounding box: [84.5897437, 27.8015878, 85.3771645, 28.2809353]

SHP · 9.2 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap destroyed and damaged features — GeoJSON

WGS 84 bounding box: [85.070124, 27.8540507, 85.4078962, 28.3064407]

GeoJSON · 186.7 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap buildings — GeoPackage

WGS 84 bounding box: [84.5549134, 27.7933997, 85.3805573, 28.2818703]

Geopackage · 2.0 MiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap settlement names — KML

WGS 84 bounding box: [84.560951, 27.7955502, 85.3777789, 28.2777749]

KML · 10.0 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap financial-service locations — KML

WGS 84 bounding box: [84.5608644, 27.8032728, 85.3364072, 28.1611718]

KML · 5.3 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Exposed hydropower facilities — GeoJSON

WGS 84 bounding box: [85.02291667, 27.82777778, 85.37013889, 28.25111111]

GeoJSON · 5.2 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap bridges — KML

WGS 84 bounding box: [84.5565078, 27.7972038, 85.3783412, 28.2791611]

KML · 17.0 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Overture Maps health facilities — GeoJSON

WGS 84 bounding box: [84.83661402, 27.80514279, 85.14725089, 27.9226656]

GeoJSON · 4.3 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Data quality report and interactive map

Asset bounding box not stated. Parent resource coverage: Bhote Koshi, Trishuli, and downstream river corridor from Rasuwagadhi to the Narayani confluence across Bagmati and Gandaki Provinces.

HTML · 189.2 KiB · Map Or Report · Reachable without registration

Open asset Metadata assessed

OpenStreetMap financial-service locations — GeoJSON

WGS 84 bounding box: [84.5608644, 27.8032728, 85.3364072, 28.1611718]

GeoJSON · 5.0 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Overture Maps points of interest — KML

WGS 84 bounding box: [84.556559, 27.79648, 85.378, 28.27606]

KML · 26.1 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

OpenStreetMap education facilities — Shapefile

WGS 84 bounding box: [84.5593052, 27.8002795, 85.3413965, 28.1653484]

SHP · 14.9 KiB · Geospatial Vector Data · Reachable without registration

Open asset Metadata assessed

Identity and coverage

Method and provenance

Access and reuse

Assets

Authoritative metadata sources