Atlas · Tanzania / 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
95 / 100
Across all datasets
Features with provenance
4,378,279 / 4,378,279
Every feature traced to its source
Geometries repaired
50,616
Invalid shapes fixed on import
Datasets with a stated licence
16 / 225
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
7,8797,87900000 stated
Global Mangrove Watch: mangrove extent 199...
100/100
8,0468,04600000 stated
Global Mangrove Watch: mangrove extent 200...
100/100
8,4198,41900000 stated
Global Mangrove Watch: mangrove extent 201...
100/100
7,7507,75000000 stated
Global Mangrove Watch: mangrove extent 201...
100/100
7,5887,58800000 stated
Global Mangrove Watch v4.1: mangrove exten...
100/100
10,45510,45500000 stated
Global Mangrove Watch v4.1: mangrove exten...
100/100
7,4587,45800000 stated
Global Mangrove Watch v4.1: mangrove exten...
100/100
6,8956,89500000 stated
Global Mangrove Watch v4.1: mangrove exten...
100/100
6,3776,37700000 stated
Global Mangrove Watch v4.1: mangrove exten...
100/100
6,6026,60200000 stated
Global Mangrove Watch v4.1: mangrove exten...
100/100
6,7846,78400000 stated
Global Mangrove Watch v4.1: mangrove exten...
100/100
6,5476,54700000 stated
Ruvuma Landscape
95/100
1100000 not stated
Tanzania +EEZ
95/100
1100000 not stated
Selous WHS
95/100
1100000 not stated
Wetlands (River)
95/100
1100000 not stated
Lindi-Mtwara-Ruvuma
95/100
1100000 not stated
SAGCOT Region
95/100
1100000 not stated
Ruaha Sub-Basin
95/100
1101000 not stated
Mbarali Catchment
95/100
1100000 not stated
Ndembera Catchment
95/100
1101000 not stated
Ruvuma
95/100
1100000 not stated
African Rift Lakes
95/100
1100000 not stated
Ruvuma_Landscape
95/100
1100000 not stated
SOKNOT_Boundary
95/100
1100000 not stated
Boundary
95/100
1100000 not stated
URT (+EEZ)
95/100
1100000 not stated
Arusha Region
95/100
1100000 not stated
Longido District
95/100
1100000 not stated
Enduimet WMA
95/100
1100000 not stated
MaB_AoI
95/100
1100000 not stated
Mangrove_agb_dissolved
95/100
1100000 not stated
polygons
95/100
1100000 not stated
polygons
95/100
1100000 not stated
rufiji_delta_mangroves
95/100
1100000 not stated
RUMAKI BR (Proposed)
95/100
1101000 not stated
polygons
95/100
1100000 not stated
SOKNOT_Landscape
95/100
1101000 not stated
lulc_final_may13_mangroves
95/100
1100000 not stated
Umba Basin
95/100
1100000 not stated
National Park
95/100
1100000 not stated
National Park 2
95/100
1100000 not stated
tza_eez
95/100
1100000 not stated
Tanzania (+EEZ)
95/100
1100000 not stated
Ruvuma Landscape
95/100
1100000 not stated
Tanzania +EEZ
95/100
1100000 not stated
Plateaus
95/100
2201000 not stated
cspii_umbrella_type
95/100
2202000 not stated
National_Parks
95/100
3300000 not stated
polygons
95/100
3300000 not stated
Buildings
95/100
4400000 not stated
cspii_umbrella
95/100
4402000 not stated
polygons
95/100
4400000 not stated
CSPIII - Priority Areas
95/100
4400000 not stated
wwf-tco_priority_areas_2020
95/100
4400000 not stated
Mtwara Corridor
95/100
5500000 not stated
Umbrella Land/Seascape
95/100
5500000 not stated
Umbrella Land/Seascape
95/100
5500000 not stated
Circles
95/100
5500000 not stated
Corridors
95/100
6600000 not stated
SAGCOT Clusters
95/100
6600000 not stated
polygons
95/100
6600000 not stated
Districts
95/100
6600000 not stated
AfricaPriorityLandscapes
95/100
7702000 not stated
Wards
95/100
7700000 not stated
rufijidelta_mangrove_covarage
95/100
7700000 not stated
Mariculture_Cage_Capability
95/100
7702000 not stated
EAC_MZQ_ForestProgramme_Countries
95/100
8800000 not stated
Zones
95/100
8801000 not stated
polygons
95/100
8801000 not stated
Offices
95/100
8800000 not stated
Regions/Provinces
95/100
9901000 not stated
SOKNOT Sublandscapes
95/100
9900000 not stated
flr_9
95/100
9900000 not stated
polygons
95/100
101000000 not stated
Umba Catchments
95/100
101000000 not stated
Umba Catchments 2
95/100
101000000 not stated
polygons
95/100
111100000 not stated
Cities/Municipalities
95/100
121200000 not stated
Cities/Municipalities
95/100
121200000 not stated
WMAs
95/100
131300000 not stated
FLRi Countries
95/100
131300000 not stated
FLRi Countries
95/100
131300000 not stated
cspii_operational
95/100
131302000 not stated
polygons
95/100
131300000 not stated
Mara River
95/100
131300000 not stated
Eastern Arc Forest (Blocks)
95/100
131300000 not stated
Eastern Arc Forest (Blocks) 2
95/100
131300000 not stated
polygons
95/100
131302000 not stated
Cities/Towns
95/100
131300000 not stated
CSPIII - Sub-land/seascape
95/100
131300000 not stated
Sub-land/seascape (Names)
95/100
131300000 not stated
CSPIII - Sub-land/seascape
95/100
131300000 not stated
Path/Tracks
95/100
151500000 not stated
polygons
95/100
171700000 not stated
Villages
95/100
171700000 not stated
Lion
95/100
171701000 not stated
Mangroves_ch_classes
95/100
181800000 not stated
Umba River
95/100
181800000 not stated
forest_projects
95/100
191900000 not stated
Target_PAs
95/100
191900000 not stated
landuse_mining_USGS_2009_SOKNOT_SOKNOT
95/100
191900000 not stated
Basin
95/100
202001000 not stated
Cheetah
95/100
212101000 not stated
SOKNOT_corridor_network1
95/100
242409000 not stated
Regions
95/100
303001000 not stated
polygons
95/100
3232023000 not stated
catchments_hydroshed_15s_b
95/100
323202000 not stated
Planned Major Roads and Rails
95/100
333300000 not stated
Development Corridors
95/100
333300000 not stated
Giraffe
95/100
333301000 not stated
Wildlife_CorridorsStatus_DRSRS_KWS_Corrido...
95/100
383800000 not stated
Demography (FB AI- 2018)
95/100
454500000 not stated
Corridors-Lines
95/100
464600000 not stated
VLFRs
95/100
474704000 not stated
Mara River
95/100
474700000 not stated
Mara River
95/100
474700000 not stated
polygons
95/100
525200000 not stated
SADC_TFCAs
95/100
565601000 not stated
Protected_Areas
95/100
565600000 not stated
Basin (Hydroshed Level 6)
95/100
595907000 not stated
Districts/Counties
95/100
616103000 not stated
Group_Ranches
95/100
646400000 not stated
Elephant
95/100
666601000 not stated
TZ_GCA_Conservancy_Ranch
95/100
676703000 not stated
Wildlife_Corridors
95/100
686800000 not stated
Operational Land/Seascape
95/100
7070010000 not stated
Operational Land/Seascape
95/100
7070010000 not stated
Coral_reef
95/100
747400000 not stated
Operational Landscape
95/100
7979013000 not stated
Zebra
95/100
929202000 not stated
Africa_WWF_Priority_202104_Operational_Lan...
95/100
9696016000 not stated
cspii_districts
95/100
10010003000 not stated
polygons
95/100
10910900000 not stated
basins_names_hydroshed
95/100
11311307000 not stated
Conservancies_SOKNOT
95/100
11411401000 not stated
Conservancies_SOKNOT
95/100
11411401000 not stated
Conservancy
95/100
11711711000 not stated
Fibre Cable Landing Stations
95/100
12612600000 not stated
Buffer Zone
95/100
132132018000 not stated
Wildebeest
95/100
14914901000 not stated
Join_Features_to_Countries_RFP
95/100
15215200000 not stated
Rivers
95/100
16616600000 not stated
Community Protected Areas
95/100
168168015000 not stated
CBOs
95/100
168168015000 not stated
Forest Reserves
95/100
17017000000 not stated
Forest Reserves
95/100
17017000000 not stated
River / Stream
95/100
17117100000 not stated
Mining concessions in Mozambique (2010)
95/100
18018000000 not stated
polygons
95/100
181181010000 not stated
URT - LGAs
95/100
19419403000 not stated
Gauging Stations
95/100
20620600000 not stated
Eastern Arc Forest
95/100
209209023000 not stated
Major Rivers
95/100
21121100000 not stated
Major Rivers
95/100
21121100000 not stated
Rivers
95/100
22822800000 not stated
LGAs
95/100
26426402000 not stated
polygons
95/100
29229206000 not stated
PAsinSOKNOT
95/100
29629602000 not stated
ProtectedAreas_SOKNOT
95/100
33233201000 not stated
ProtectedAreas_SOKNOT
95/100
33233201000 not stated
Protected_Areas
95/100
33333301000 not stated
geopoint
95/100
40940900000 not stated
Main Roads
95/100
41341300000 not stated
Wards
95/100
41641602000 not stated
ProtectedAreas_AfricaPriorityLandscapes
95/100
49249204000 not stated
Administration (Level 2)
95/100
49549501000 not stated
Administration (Level 2)
95/100
49549501000 not stated
Wards
95/100
56456405000 not stated
utl-op-se-mrc-watersources-2024
95/100
57857800000 not stated
Basin (Hydroshed Level 8)
95/100
58058007000 not stated
Power Plants (Power output MW)
95/100
64264200000 not stated
lines
95/100
64664600000 not stated
Forest
95/100
85685603000 not stated
Forest 2
95/100
85685603000 not stated
AfricaPriority_River
95/100
85785700000 not stated
Protected Areas
95/100
92892802000 not stated
River
95/100
1,0841,08400000 not stated
Watersources
95/100
1,1121,11200000 not stated
PAs_092020
95/100
1,1591,15911000 not stated
urt_catchments
95/100
1,4841,484018000 not stated
RUMAKI BR (Proposed) Coordinates
95/100
1,5701,57000000 not stated
Main Roads
95/100
1,5981,59800000 not stated
Small airport
95/100
1,9791,97900000 not stated
NamedPermanentRiverSystem_Kenya
95/100
2,3382,33800000 not stated
NamedPermanentRiverSystem_Kenya
95/100
2,3382,33800000 not stated
Dams
95/100
2,5862,58600000 not stated
Basin (Hydroshed Level 10)
95/100
2,6962,696010000 not stated
Ug_Roads
95/100
3,2813,28100000 not stated
Railway
95/100
3,8403,84000000 not stated
Roads
95/100
4,9464,94600000 not stated
Districts
95/100
6,0996,099013000 not stated
World Database on Protected Areas
95/100
7,4387,43801000 not stated
urt_basin
95/100
7,7407,74005000 not stated
Rivers
95/100
8,9978,99700000 not stated
Electricity Transmission Network
95/100
9,7599,75900000 not stated
Wetlands/Swamps
95/100
12,03912,03900000 not stated
Fire Incidences Grid (2000-2019)
95/100
14,69214,69200000 not stated
MARXAN-CRUZ PU SF-Score
95/100
14,69214,69200000 not stated
MARXAN-CRUZ PU Status
95/100
14,69214,69200000 not stated
MARXAN-CRUZ PU SF-Score
95/100
14,69214,69200000 not stated
MARXAN-CRUZ PU Status
95/100
14,69214,69200000 not stated
LULC 2010 NAFORMA
95/100
16,87116,87101,259000 not stated
Divisions
95/100
17,64917,64909000 not stated
Roads1
95/100
20,41720,41700000 not stated
Irrigated Areas
95/100
23,09523,09501000 not stated
Agro-Ecological Zones
95/100
25,79125,791017000 not stated
Population Points (RS AI) 2018)
95/100
26,33626,33600000 not stated
Zones
95/100
26,98426,9840797000 not stated
Zones
95/100
27,78127,7810802000 not stated
lulc_2015_naforma
95/100
33,43533,43500000 not stated
Rivers1
95/100
48,03348,03300000 not stated
Carbon projects: Tanzania
90/100
151500000 —stated
Seagrass (UNEP-WCMC): Tanzania
90/100
15315300000 —stated
Salt marsh (UNEP-WCMC): Tanzania
90/100
1100000 —stated
Community and nature projects (UNDP): Tanz...
90/100
191900000 —stated
Fences
95/100
148,597148,59710000 not stated
LULC 2025 BAU Min. Scenario
95/100
181,238181,23803,341000 not stated
Elephant Track
95/100
276,722276,72200000 not stated
LULC 2025 GE Scenario
95/100
329,368329,36808,517000 not stated
LULC 2025-GE Scenario
95/100
336,993336,993011,594000 not stated
LULC 2025-BAU Min. Scenario
95/100
342,044342,04403,671000 not stated
LULC 2025 BAU Max. Scenario
95/100
525,756525,75607,959000 not stated
LULC 2025-BAU Max. Scenario
95/100
736,076736,076012,333000 not stated
FB-AI-Population Distribution
95/100
969,481969,48100000 not 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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