Basin (Hydroshed Level 8)
All HydroBASINS layers were derived from World Wildlife Fund’s HydroSHEDS data based on a grid resolution of 15 arc-seconds (approximately 500 m at the equator). Watersheds were delineated in a consistent manner at different scales, and a hierarchical sub-basin breakdown was created following the topological concept of the Pfafstetter coding system. The resulting polygon layers are termed HydroBASINS and represent a subset of the HydroSHEDS database. This shapefile contains (sub-)basin polygons for Africa at Pfafstetter level 8.
About this dataset
- Source
- WWF Kenya Sources: GIS Centre of ExcellenceWWF Kenya
- Source layer
- Basin (Hydroshed Level 8) (EPSG:102100 (service native); served as EPSG:4326)
- Module / ecosystem
- WATER & CATCHMENTS
- Licence
- To be confirmed with the publisherLicence not stated by the publisher. Atlas holds an archival copy for scientific and internal use. Do not redistribute in bulk without the publisher's permission. Always cite WWF Kenya and the original data owner named in the layer description.
- Coordinate system
- Stored as EPSG:4326 (WGS 84). Source native: 102100
- Records archived
- 580 (matches the source's own count)
How to cite
Feature classes
| Class | Features |
|---|---|
| basin_hydroshed_level_8 | 580 |
Measurements recorded
Unit harmonisation applied to this dataset
Every number in Atlas is stored in one canonical unit; the original value and unit are always kept
| Source field | Measure | Source unit | Atlas unit | Factor | Treatment |
|---|---|---|---|---|---|
| geometry | area / length | EPSG:4326 degrees | ha / m | — | geodesic area (ha), perimeter (m) and length (km) computed on the WGS 84 ellipsoid with PostGIS |
Attributes stored per feature
How many features carry each attribute (first 20,000)
| Attribute | Features |
|---|---|
| attributes | 580 |
| area_ha_geodesic | 580 |
| perimeter_m | 580 |
Checked against the geometry
Source value ÷ the same quantity computed from the stored shape
Archive & integrity
- Snapshot
- n/a
- Format
- GeoJSON (gzip pages, WGS 84 as served)
- Archive checksum
- c75999e620370c615f44b19188c5aaf0f435e74ee43fb82eca1b4a204820cfa2
Verification against the raw archive
Import history
| Run | Status | Started | Records | Repaired geometries |
|---|---|---|---|---|
| #1096 | completed | 2026-10-13 06:15:06.040936+00 | 580 | 7 |