Atlas · South Africa / Data Quality
DATA

Data Quality

A transparent scorecard for every dataset: valid shapes, provenance coverage, internal consistency, verification and licence clarity. Known issues are listed openly so scientists can judge fitness for use.

Average score
96 / 100
Across all datasets
Features with provenance
114,918 / 114,918
Every feature traced to its source
Geometries repaired
71
Invalid shapes fixed on import
Datasets with a stated licence
16 / 47
Others held for internal use

Scorecard

Score = valid geometry 30% · provenance 25% · no flagged values 15% · unique IDs 15% · verification 10% · licence 5%

DatasetScoreFeaturesProvenanceNo geometryRepairedDuplicate IDsFlaggedRejected valuesVerifiedLicence
Global Mangrove Watch: mangrove extent 202...
100/100
62262200000 stated
Global Mangrove Watch: mangrove extent 199...
100/100
96196100000 stated
Global Mangrove Watch: mangrove extent 200...
100/100
73673600000 stated
Global Mangrove Watch: mangrove extent 201...
100/100
64164100000 stated
Global Mangrove Watch: mangrove extent 201...
100/100
64664600000 stated
Global Mangrove Watch v4.1: mangrove exten...
100/100
47747700000 stated
Global Mangrove Watch v4.1: mangrove exten...
100/100
45845800000 stated
Global Mangrove Watch v4.1: mangrove exten...
100/100
44044000000 stated
Global Mangrove Watch v4.1: mangrove exten...
100/100
40140100000 stated
Global Mangrove Watch v4.1: mangrove exten...
100/100
41941900000 stated
Global Mangrove Watch v4.1: mangrove exten...
100/100
42342300000 stated
Global Mangrove Watch v4.1: mangrove exten...
100/100
37837800000 stated
Fynbos
95/100
1100000 not stated
Heliport
95/100
4400000 not stated
Africa_Water_Towers
95/100
7700000 not stated
polygons
95/100
111100000 not stated
Biodiversity Hotspots
95/100
121200000 not stated
Air Flight Routes
95/100
181800000 not stated
Air_Flight_Routes
95/100
181800000 not stated
Main Towns
95/100
222200000 not stated
Large airport
95/100
232300000 not stated
Planned Major Roads and Rails
95/100
333300000 not stated
Development Corridors
95/100
333300000 not stated
SADC_TFCAs
95/100
565601000 not stated
Fibre Cable
95/100
727200000 not stated
Operational Landscape
95/100
7979013000 not stated
Africa_WWF_Priority_202104_Operational_Lan...
95/100
9696016000 not stated
Fibre Cable Landing Stations
95/100
12612600000 not stated
Rivers
95/100
22822800000 not stated
Trunk Roads N12
95/100
52052000000 not stated
towns and settlements
95/100
61161120000 not stated
Power Plants (Power output MW)
95/100
64264200000 not stated
AfricaPriority_River
95/100
85785700000 not stated
Small airport
95/100
1,9791,97900000 not stated
District Roads N12
95/100
2,1582,15800000 not stated
Dams
95/100
2,5862,58600000 not stated
Districts
95/100
6,0996,099013000 not stated
World Database on Protected Areas
95/100
7,4387,43801000 not stated
Populated_places
95/100
8,1498,14930000 not stated
Electricity Transmission Network
95/100
9,7599,75900000 not stated
Divisions
95/100
17,64917,64909000 not stated
Irrigated Areas
95/100
23,09523,09501000 not stated
Agro-Ecological Zones
95/100
25,79125,791017000 not stated
Carbon projects: South Africa
90/100
282800000 —stated
Seagrass (UNEP-WCMC): South Africa
90/100
262600000 —stated
Salt marsh (UNEP-WCMC): South Africa
90/100
777700000 —stated
Community and nature projects (UNDP): Sout...
90/100
131300000 —stated

Known issues & assumptions

Stated plainly so nobody is surprised later
Field-plot canopy cover above 100%
One or more plots report a cover value over 100% (up to 6,070). That cannot be a percentage, so Atlas rejects the value, keeps the original and flags the plot.
Field-survey photos are not in the archive yet
The 139 plot photographs are not part of the archive yet. Their original links are kept, so the photos can be added when the publisher shares the image files.
No licence stated by the publisher
Atlas holds an archival copy for scientific and internal use and asks users to cite WWF Kenya, KMFRI and KFS. We are seeking written permission for wider redistribution.
Degree-based length and area fields excluded
Several source fields (st_area, st_length, Shape_Leng) are in degrees or square degrees, not metres or hectares. Atlas excludes them and recomputes from geometry.
Turtle timestamps assumed UTC
The source gives times without a time zone. UTC is assumed (standard for satellite telemetry) and the assumption is recorded with the data.
Unpopulated historic-area fields
The mangrove block layers carry 1990–2018 area fields that are all zero. They are treated as empty placeholders, not measurements.
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