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DATASET

Umba Catchments 2

<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>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.</SPAN></P></DIV>

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CSV GeoJSON
Features
10
umba_catchments_2
Observations
0
Linked measurements
Quality score
95 / 100
Completeness · provenance · checks
Version
v1
Imported 2026-10-13

About this dataset

Source
WWF Kenya Sources: GIS Centre of Excellence
WWF Kenya
Source layer
Umba Catchments 2 (EPSG:102100 (service native); served as EPSG:4326)
Module / ecosystem
WATER & CATCHMENTS
Licence
To be confirmed with the publisher
Licence 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
10 (matches the source's own count)

How to cite

WWF Kenya, KMFRI, KFS (2026). Umba Catchments 2. Archived copy held by Atlas Blue Carbon Intelligence (snapshot n/a; SHA-256 2826ecf607abfcf6…). Accessed via https://atlas.twende.green/datasets/wf-hosted-umba4web-wfl1-13-umba-catchments-2-113ba2.

Feature classes

ClassFeatures
umba_catchments_210

Measurements recorded

Geometry-only dataset
No separate measurements; attributes are shown in the data table.

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 fieldMeasureSource unitAtlas unitFactorTreatment
geometryarea / lengthEPSG:4326 degreesha / 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)

AttributeFeatures
attributes10
area_ha_geodesic10
perimeter_m10

Checked against the geometry

Source value ÷ the same quantity computed from the stored shape

No unit checks apply

Archive & integrity

Snapshot
n/a
Format
GeoJSON (gzip pages, WGS 84 as served)
Archive checksum
2826ecf607abfcf6fb2646e3f86033a5463abf838900c302e656ddfe60ed6ac5
Atlas serves this dataset from its own archived copy. Nothing is requested from the publisher when you view or download it.

Verification against the raw archive

Record counts match the source
Imported record count equals the source's own count; per-record cross-check recorded in the import run.

Import history

RunStatusStartedRecordsRepaired geometries
#748completed2026-10-13 06:03:28.560158+00100
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