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DEM Cloud-Optimized GeoTIFFs
Range-readable Cloud-Optimized GeoTIFF (COG) elevation rasters. Clients stream only the tiles/zoom they need (no full download).
Files
| File | Description | Size |
|---|---|---|
copernicus_world_30m_lerc.cog.tif |
Global 30 m elevation, COG, LERC_ZSTD | ~125 GB |
france_dtm_5m_lerc.cog.tif |
Metropolitan France 5 m DTM (IGN RGE ALTI), Lambert-93, LERC_ZSTD | ~28.3 GB |
france_dtm_30m_deflate.cog.tif |
Metropolitan France 30 m DTM (IGN RGE ALTI), Lambert-93, DEFLATE | ~2.0 GB |
guyane_dtm_5m_lerc.cog.tif |
French Guiana 5 m DTM (IGN RGE ALTI), UTM 22N | ~5.0 GB |
reunion_dtm_1m_lerc.cog.tif |
Réunion 1 m DTM (IGN RGE ALTI), UTM 40S | ~3.5 GB |
lesdeuxalpes_dtm_0.5m_lerc.cog.tif |
Les Deux Alpes 0.5 m LiDAR-derived DTM, Lambert-93 | ~613 MB |
antilles_dtm_5m_lerc.cog.tif |
Guadeloupe / Martinique 5 m DTM (IGN RGE ALTI), UTM 20N | ~213 MB |
reunion_dtm_5m_lerc.cog.tif |
Réunion 5 m DTM (IGN RGE ALTI), UTM 40S | ~184 MB |
mayotte_dtm_5m_lerc.cog.tif |
Mayotte 5 m DTM (IGN RGE ALTI), UTM 38S | ~32 MB |
Copernicus World 30 m
| Property | Value |
|---|---|
| Dimensions | 1,296,005 × 626,400 px |
| Bands | 1 (elevation, Float32, meters) |
| CRS | EPSG:4326 (WGS 84, geographic) |
| Pixel size | 0.0002777778° ≈ 1 arc-second (~30 m at equator) |
| Extent | lon −180.0014 → 180.0000, lat −89.9999 → 84.0001 |
| Layout | COG, 512 × 512 internal tiles, BAND interleave |
| Compression | LERC_ZSTD, MAX_Z_ERROR=1 (≤ 1 m vertical error) |
| Overviews | 11 levels (down to 633 × 306) |
| NoData | none set |
Derived from Copernicus DEM data.
France 5 m DTM
| Property | Value |
|---|---|
| Dimensions | 230,000 × 214,000 px |
| Bands | 1 (elevation, Float32, meters) |
| CRS | EPSG:2154 (RGF93 / Lambert-93) |
| Pixel size | 5 m × 5 m |
| Extent | 94,997.5–1,244,997.5 E, 6,045,002.5–7,115,002.5 N |
| Layout | COG, 512 × 512 internal tiles, BAND interleave |
| Compression | LERC_ZSTD, MAX_Z_ERROR=0.01 (≤ 1 cm vertical error) |
| Overviews | 9 levels (down to 449 × 417) |
| NoData | −99999 |
| Elevation | min −120 m, max 4,779 m, mean 344 m (45% of pixels valid) |
| Size | ~28.3 GB |
Metropolitan France including Corsica. Processed as a single COG from IGN RGE ALTI 5 m tiles.
France 30 m DTM
| Property | Value |
|---|---|
| Dimensions | 38,333 × 35,667 px |
| Bands | 1 (elevation, Float32, meters) |
| CRS | EPSG:2154 (RGF93 / Lambert-93) |
| Pixel size | 30 m × 30 m |
| Extent | 94,997.5–1,244,987.5 E, 6,044,992.5–7,115,002.5 N |
| Layout | COG, 512 × 512 internal tiles, BAND interleave |
| Compression | DEFLATE |
| Overviews | 6 levels (down to 150 × 139) |
| NoData | −99999 |
| Size | ~2.0 GB |
Same metropolitan extent as the 5 m file, resampled to 30 m. Lighter download when the 5 m national surface is more than the pose needs.
Antilles 5 m DTM
| Property | Value |
|---|---|
| Dimensions | 52,000 × 83,000 px |
| Bands | 1 (elevation, Float32, meters) |
| CRS | EPSG:32620 (WGS 84 / UTM zone 20N) |
| Pixel size | 5 m × 5 m |
| Extent | 479,997.5–739,997.5 E, 1,590,002.5–2,005,002.5 N |
| Layout | COG, 512 × 512 internal tiles, BAND interleave |
| Compression | LERC_ZSTD, MAX_Z_ERROR=0.01 (≤ 1 cm vertical error) |
| Overviews | 8 levels (down to 203 × 324) |
| NoData | −99999 |
| Size | ~213 MB |
Guadeloupe, Martinique and neighbouring French Antilles tiles from IGN RGE ALTI.
Guyane 5 m DTM
| Property | Value |
|---|---|
| Dimensions | 68,000 × 82,000 px |
| Bands | 1 (elevation, Float32, meters) |
| CRS | EPSG:2972 (RGFG95 / UTM zone 22N) |
| Pixel size | 5 m × 5 m |
| Extent | 94,997.5–434,997.5 E, 230,002.5–640,002.5 N |
| Layout | COG, 512 × 512 internal tiles, BAND interleave |
| Compression | LERC_ZSTD, MAX_Z_ERROR=0.01 (≤ 1 cm vertical error) |
| Overviews | 8 levels (down to 265 × 320) |
| NoData | −99999 |
| Size | ~5.0 GB |
French Guiana from IGN RGE ALTI.
Mayotte 5 m DTM
| Property | Value |
|---|---|
| Dimensions | 8,000 × 9,000 px |
| Bands | 1 (elevation, Float32, meters) |
| CRS | EPSG:4471 (RGM04 / UTM zone 38S) |
| Pixel size | 5 m × 5 m |
| Extent | 494,997.5–534,997.5 E, 8,560,002.5–8,605,002.5 N |
| Layout | COG, 512 × 512 internal tiles, BAND interleave |
| Compression | LERC_ZSTD, MAX_Z_ERROR=0.01 (≤ 1 cm vertical error) |
| Overviews | 5 levels (down to 250 × 281) |
| NoData | −99999 |
| Size | ~32 MB |
Mayotte from IGN RGE ALTI.
Réunion 5 m DTM
| Property | Value |
|---|---|
| Dimensions | 14,000 × 13,000 px |
| Bands | 1 (elevation, Float32, meters) |
| CRS | EPSG:2975 (RGR92 / UTM zone 40S) |
| Pixel size | 5 m × 5 m |
| Extent | 309,997.5–379,997.5 E, 7,630,002.5–7,695,002.5 N |
| Layout | COG, 512 × 512 internal tiles, BAND interleave |
| Compression | LERC_ZSTD, MAX_Z_ERROR=0.01 (≤ 1 cm vertical error) |
| Overviews | 5 levels (down to 437 × 406) |
| NoData | −99999 |
| Size | ~184 MB |
Réunion city-default DEM from IGN RGE ALTI.
Réunion 1 m DTM
| Property | Value |
|---|---|
| Dimensions | 66,000 × 58,000 px |
| Bands | 1 (elevation, Float32, meters) |
| CRS | EPSG:2975 (RGR92 / UTM zone 40S) |
| Pixel size | 1 m × 1 m |
| Extent | 313,999.5–379,999.5 E, 7,634,000.5–7,692,000.5 N |
| Layout | COG, 512 × 512 internal tiles, BAND interleave |
| Compression | LERC_ZSTD, MAX_Z_ERROR=0.01 (≤ 1 cm vertical error) |
| Overviews | 8 levels (down to 257 × 226) |
| NoData | −99999 |
| Size | ~3.5 GB |
Finer Réunion surface from IGN RGE ALTI. Same CRS as the 5 m file, slightly tighter extent.
Les Deux Alpes 0.5 m DTM
| Property | Value |
|---|---|
| Dimensions | 38,912 × 13,312 px |
| Bands | 1 (elevation, Float32, meters) |
| CRS | EPSG:2154 (RGF93 / Lambert-93) |
| Pixel size | 0.5 m × 0.5 m |
| Extent | 937,984–957,440 E, 6,435,328–6,441,984 N (~19.5 × 6.7 km) |
| Layout | COG, 512 × 512 internal tiles, BAND interleave |
| Compression | LERC_ZSTD, MAX_Z_ERROR=0.01 (≤ 1 cm vertical error) |
| Overviews | 7 levels (down to 304 × 104) |
| NoData | −9999 |
| Elevation | min 720 m, max 3,668 m, mean 2,060 m (87.7% of pixels valid) |
| Size | ~613 MB |
LiDAR-derived resort DTM over Les Deux Alpes (Isère). Intended as a fine rung on top of the national 5 m file, not as a standalone wide-area DEM — the box covers the ski domain only.
Reading without downloading
GDAL (vsicurl):
gdalinfo /vsicurl/https://huggingface.co/datasets/OneAvailableUsername/worldcog/resolve/main/france_dtm_5m_lerc.cog.tif
Python (rasterio):
import rasterio
url = "https://huggingface.co/datasets/OneAvailableUsername/worldcog/resolve/main/france_dtm_5m_lerc.cog.tif"
with rasterio.open(url) as src:
print(src.crs, src.res)
window = rasterio.windows.from_bounds(650000, 6865000, 660000, 6875000, src.transform)
elev = src.read(1, window=window)
Notes
- Copernicus values are ellipsoidal/orthometric elevations in meters as provided by the source product.
LERC_ZSTDthere is lossy to a bounded 1 m vertical error — suitable for visualization and most analysis, not for sub-meter vertical work. - The France 5 m DTM and the overseas 5 m / 1 m / 0.5 m LERC files use a 1 cm LERC max-z-error.
- The France 30 m file is lossless DEFLATE, not LERC.
- Overseas files keep their native projected CRS (UTM / local grids). Do not assume Lambert-93 outside metropolitan France.
Attribution & licence
Two source licences apply:
copernicus_world_30m_lerc.cog.tif— Copernicus DEM © ESA / European Commission. Use is subject to the Copernicus DEM licence terms. Confirm the exact source product (GLO-30 / GLO-90 / EEA-10) and licence before downstream use.- All
france_*,antilles_*,guyane_*,mayotte_*,reunion_*, andlesdeuxalpes_*files — derived from IGN RGE ALTI (and, for Les Deux Alpes 0.5 m, IGN LiDAR HD) © IGN. Redistributable under Licence Ouverte / Open Licence 2.0 (Etalab). Attribute IGN.
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