dataset · Global
NASADEM HGT v001
[NASADEM](https://earthdata.nasa.gov/esds/competitive-programs/measures/nasadem) provides global topographic data at 1 arc-second (~30m) horizontal resolution, derived primarily from data captured via the [Shuttle Radar Topography Mission](https://www2.jpl.nasa.gov/srtm/) (SRTM).
Visit source ↗Source details
Licence: proprietary
Evidence quality: 30.6
Listed in planetary-computer public catalogue API on 2026-10-16; relevance/value screened (haiku).
Metadata checked: 2026-10-14T13:20:00.000Z
What's in it
- Data offered llm-inferred
- global topographic elevation (DEM) · derived from SRTM
- Coverage llm-inferred
- Global
- Resolution llm-inferred
- 1 arc-second (~30m horizontal)
- Formats llm-inferred
- HGT
- Access llm-inferred
- No auth listed; licence recorded as proprietary in catalogue metadata. Check terms before use.
Useful for
- Use cases llm-inferred
- Preliminary catchment and flow-path delineation for FRA screening · Site topography and levels input for drainage strategy · Terrain and slope screening for geotechnical desk studies
- Audience llm-inferred
- hydrologists · drainage engineers · civils engineers · GIS analysts
Limitations
- Constraints llm-inferred
- No docs retrieved; capabilities beyond the catalogue description are unverified · Derived from SRTM at ~30m, so not a surveyed DEM for detailed design · Licence recorded as proprietary; confirm usage rights · Vertical accuracy and void-filling methods not documented in available metadata
Evidence
- https://planetarycomputer.microsoft.com/api/stac/v1/collections/nasadem
- https://planetarycomputer.microsoft.com/dataset/nasadem
Check upstream coverage, uncertainty and licence before use. Station observations are not forecasts or design levels.