Before you download: three notes
- Independent datasets. Everything here is computed by the Flow* tools from MERIT Hydro or HydroSHEDS v2. These are not official MERIT Hydro products and are not part of the official HydroSHEDS family of products.
- Get the source data from the providers first. Download the flow directions (
dir), elevation (elv) and the other source layers from MERIT Hydro · 90 m or HydroSHEDS v2.0 · 30 m. - Source data are not here. FullHydro does not redistribute any MERIT Hydro or HydroSHEDS product itself, such as the flow directions, flow accumulation, elevation or HydroBASINS.
Every table comes as .csv and .parquet, every outline layer as .gpkg and .geo.parquet: the same content, take what your software opens. SHA256SUMS.txt checks a download.
| Name | Size | Updated | Description |
|---|---|---|---|
| ../ | up one level | ||
| bsn_north-america_30m.tif | 500 MB | 2026-09-11 | the basin mask at 1 arc-second: every land pixel carries the id of the outlet it drains to (all 30,077,037 outlets, not only the 105,581 basins of at least 1 km²) |
| rgn_north-america_30m_160deg2.tif | 230 MB | 2026-09-13 | the region mask at 1 arc-second, regions of at most 2³¹ pixels (106 regions) |
| rgn_north-america_30m_80deg2.tif | 238 MB | 2026-09-13 | the region mask at 1 arc-second, regions of at most 2³⁰ pixels (196 regions) |
| rgn_north-america_30m_40deg2.tif | 248 MB | 2026-09-13 | the region mask at 1 arc-second, regions of at most 2²⁹ pixels (371 regions) |
| bat_north-america_30m_ge1km2.csv | 18 MB | 2026-10-08 | basin table, 105,581 rows (basins of at least 1 km², one row per basin in id order), CSV: continental_basin_id, global_basin_id (one numbering across North America and South America), its basin groups at Level-01, Level-02 and Level-03, its regions of at most 2³¹, 2³⁰ and 2²⁹ pixels, and the other columns of the 30 m basin table |
| bat_north-america_30m_ge1km2.parquet | 8.9 MB | 2026-10-08 | the same table as Apache Parquet |
| gat_north-america_30m_l1.csv | 888 B | 2026-09-29 | basin group table, Level-01 units, 3 rows |
| gat_north-america_30m_l1.parquet | 10 kB | 2026-10-08 | the same table as Apache Parquet |
| gat_north-america_30m_l2.csv | 3.1 kB | 2026-09-29 | basin group table, Level-02 units, 15 rows |
| gat_north-america_30m_l2.parquet | 12 kB | 2026-10-08 | the same table as Apache Parquet |
| gat_north-america_30m_l3.csv | 8.8 kB | 2026-09-29 | basin group table, Level-03 units, 48 rows |
| gat_north-america_30m_l3.parquet | 15 kB | 2026-10-08 | the same table as Apache Parquet |
| rat_north-america_30m_160deg2.csv | 20 kB | 2026-09-29 | region table, regions of at most 2³¹ pixels, 106 rows |
| rat_north-america_30m_160deg2.parquet | 20 kB | 2026-10-08 | the same table as Apache Parquet |
| rat_north-america_30m_80deg2.csv | 37 kB | 2026-09-29 | region table, regions of at most 2³⁰ pixels, 196 rows |
| rat_north-america_30m_80deg2.parquet | 25 kB | 2026-10-08 | the same table as Apache Parquet |
| rat_north-america_30m_40deg2.csv | 70 kB | 2026-09-29 | region table, regions of at most 2²⁹ pixels, 371 rows |
| rat_north-america_30m_40deg2.parquet | 35 kB | 2026-10-08 | the same table as Apache Parquet |
| pat_north-america_30m_160deg2.csv | 18 kB | 2026-09-29 | piece table: the pieces of the cut basins, regions of at most 2³¹ pixels, 79 rows |
| pat_north-america_30m_160deg2.parquet | 19 kB | 2026-10-08 | the same table as Apache Parquet |
| pat_north-america_30m_80deg2.csv | 46 kB | 2026-09-29 | piece table: the pieces of the cut basins, regions of at most 2³⁰ pixels, 204 rows |
| pat_north-america_30m_80deg2.parquet | 33 kB | 2026-10-08 | the same table as Apache Parquet |
| pat_north-america_30m_40deg2.csv | 123 kB | 2026-09-29 | piece table: the pieces of the cut basins, regions of at most 2²⁹ pixels, 551 rows |
| pat_north-america_30m_40deg2.parquet | 69 kB | 2026-10-08 | the same table as Apache Parquet |
| bsn_north-america_ge1km2.gpkg | 102 MB | 2026-10-08 | simplified basin polygons, GeoPackage: one row per basin of at least 1 km² in id order, with the same rows and ids as the basin table (a basin too small to hold a cell keeps its row but has no geometry). Columns: the id, the area, the outlet, the map-view columns, and color_id (1–8, no two neighbours alike) so a map can colour the basins directly; the other columns are in the basin table |
| bsn_north-america_ge1km2.geo.parquet | 24 MB | 2026-10-08 | the same outlines as GeoParquet 1.1 |
| bnd_north-america_ge1km2.gpkg | 96 MB | 2026-10-08 | their boundaries as lines, GeoPackage, simplified, same rows |
| bnd_north-america_ge1km2.geo.parquet | 20 MB | 2026-10-08 | the same outlines as GeoParquet 1.1 |
| grp_north-america_l1.gpkg | 11 MB | 2026-10-08 | basin group outlines, Level-01 units, GeoPackage, simplified, one row per group (the same rows as its table), with color_id |
| grp_north-america_l1.geo.parquet | 2.4 MB | 2026-10-08 | the same outlines as GeoParquet 1.1 |
| grp_north-america_l2.gpkg | 14 MB | 2026-10-08 | basin group outlines, Level-02 units, GeoPackage, simplified, one row per group (the same rows as its table), with color_id |
| grp_north-america_l2.geo.parquet | 3.0 MB | 2026-10-08 | the same outlines as GeoParquet 1.1 |
| grp_north-america_l3.gpkg | 16 MB | 2026-10-08 | basin group outlines, Level-03 units, GeoPackage, simplified, one row per group (the same rows as its table), with color_id |
| grp_north-america_l3.geo.parquet | 3.5 MB | 2026-10-08 | the same outlines as GeoParquet 1.1 |
| rgn_north-america_160deg2.gpkg | 21 MB | 2026-10-08 | region outlines, regions of at most 2³¹ pixels, GeoPackage, simplified, one row per region (the same rows as its table), with color_id |
| rgn_north-america_160deg2.geo.parquet | 4.5 MB | 2026-10-08 | the same outlines as GeoParquet 1.1 |
| rgn_north-america_80deg2.gpkg | 25 MB | 2026-10-08 | region outlines, regions of at most 2³⁰ pixels, GeoPackage, simplified, one row per region (the same rows as its table), with color_id |
| rgn_north-america_80deg2.geo.parquet | 5.3 MB | 2026-10-08 | the same outlines as GeoParquet 1.1 |
| rgn_north-america_40deg2.gpkg | 30 MB | 2026-10-08 | region outlines, regions of at most 2²⁹ pixels, GeoPackage, simplified, one row per region (the same rows as its table), with color_id |
| rgn_north-america_40deg2.geo.parquet | 6.4 MB | 2026-10-08 | the same outlines as GeoParquet 1.1 |
| bsn_rgn_north-america.pmtiles | 133 MB | 2026-09-23 | vector tiles of the 27,618 basins of at least 10 km², their boundaries, the three basin-group layers and the three region layers (what the map draws), zoom 2–11 |
| SHA256SUMS.txt | 4.1 kB | 2026-10-08 | the SHA-256 of every file in this folder: sha256sum -c SHA256SUMS.txt |
The same folder on the data server: https://data.fullhydro.org/hydrosheds-v2.0-30m/fullbasin/fulldivide/v1.0/north-america/