2026 Data (Information)
GRID3 NGA - Settlement Extents v4.1
The GRID3 NGA - Settlement Extents v4.1 dataset consists of a geographic representation of settlements in Nigeria. Settlement extents are further delineated into settlement blocks nested within urban and small settlement areas, generated from integrated road, railway, river, building footprints, and remote-sensing inputs. Each block is enriched with morphological, environmental, and building metrics.
This version supersedes the GRID3 NGA - Settlement Extents v4.0 (https://doi.org/10.7916/fr96-f546 ). The following changes were made:
Revision of block delineation methodology resulting in new block geometries.
Removal of hamlets and edge-blocks with zero-building count.
Addition of airports to the block classifications and removal of es_class (extent size) from the attributes and classification.
Keywords: Settlements
Files
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GRID3 NGA - Settlement Extents v4.1 - Data Release Notes.pdf
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139 KB
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grid3_nga_settlement_extents_v4_1.xml
application/xml
10.9 KB
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GRID3_NGA_settlement_extents_v4_1.gpkg
application/x-geopackage
1.99 GB
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More About This Work
- Academic Units
- Center for Integrated Earth System Information
- Series
- GRID3
- Published Here
- August 10, 2026
Related Items
- Previous version:
- GRID3 NGA - Settlement Extents v4.0
Notes
Dataset citation:
Center for Integrated Earth System Information (CIESIN), Columbia University. 2026. GRID3 NGA - Settlement Extents v4.1. New York: Columbia University. https://doi.org/10.7916/73v5-mq06. Accessed [DAY MONTH YEAR].
Data Use Constraints:
Users are free to download, store, access, use, copy, adapt, transform, alter, arrange, build upon, distribute and transmit this work and any derivative works. Attribution of the source must be provided, and further distribution of this work or derived work must maintain the same terms of data use and license as set forth in this Terms of Use.
Copyright 2026. The Trustees of Columbia University in the City of New York.
The data and accompanying document are licensed under a Creative Commons Attribution-Share Alike 4.0 International, CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0) and specified in legal code (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Contacts and Data Queries:
We appreciate feedback regarding this dataset, including suggestions, discovery of errors, difficulties in using the data, and format preferences. Please contact: CIESIN, info@ciesin.columbia.edu
