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OPERA HLS surface-water products — Nepal corridor, June–September 2026

Original titleOPERA Dynamic Surface Water Extent from Harmonized Landsat Sentinel-2 product (Version 1) — Nepal event-window observations

All 1,524 asset URLs occur in freshly retrieved original CMR granule manifests. The 127 granules contain distinct product and ancillary layers; water classes are not independently validated event flood boundaries. Acquisition dates and cloud limitations remain attached to every asset.

Status
Included
Provider
NASA OPERA
Resource type
Derived Product Or Context Collection
Evidence class
Surface Water Product With Baseline And Quality Layers

Completed catalogue assessment

Eligibility decision
Include · Include
Assessment date
28 September 2026
Decision reason
All 1,524 asset URLs occur in freshly retrieved original CMR granule manifests. The 127 granules contain distinct product and ancillary layers; water classes are not independently validated event flood boundaries. Acquisition dates and cloud limitations remain attached to every asset.
Metadata corrections
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View the complete assessment and exclusion ledger.

Identity and coverage

Catalogue identifier
rec_69d062d1-74de-5ed6-8d22-c78a19706e7b
Original-title language
English
English-title status
Not applicable
Persistent identifier
Not stated
Resource version
Not stated
Publication date
Not stated
Last updated
Not stated
Metadata reviewed
28 September 2026
Language
English
Geographic coverage
Provider-defined Nepal event area or intersecting global tiles; exact source extents retained with asset metadata.
Bounding box (WGS 84)
Not stated
Temporal coverage
Not stated; Acquisition Dates 2026-06-28T05:10:46.735Z Through 2026-09-04T04:42:06.185Z. Publication/Processing Timestamps Remain Separate.
Themes
Not stated

Method and provenance

Production method
Not stated
Provenance
All 1,524 asset URLs occur in freshly retrieved original CMR granule manifests. The 127 granules contain distinct product and ancillary layers; water classes are not independently validated event flood boundaries. Acquisition dates and cloud limitations remain attached to every asset.
Validation
Not Performed By Catalogue Review
Uncertainty
Catalogue eligibility does not establish scientific validation.
Limitations
Public metadata and browse files; protected science data use the documented free Earthdata route. Anonymous HEAD rejection does not establish a paywall. NASA collection terms; Copernicus source notices, including separate Copernicus DEM rights for the DEM layer.

Access and reuse

Access
Source Specific Conditions; open access route
Licence
Not verified
Redistribution
Metadata and links only; third-party files are not redistributed
Catalogue status
Included

Assets

1524 assets

Authoritative metadata sources

Spatial extent

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Recorded bounding box