The Registry of Open Data on AWS is now available on AWS Data Exchange
All datasets on the Registry of Open Data are now discoverable on AWS Data Exchange alongside 3,000+ existing data products from category-leading data providers across industries. Explore the catalog to find open, free, and commercial data sets. Learn more about AWS Data Exchange

Digital Earth Africa - Copernicus Global Land Service - Lake Water Quality

agriculture cog deafrica disaster response earth observation geospatial natural resource satellite imagery stac water

Description

The Copernicus Global Land Service – Lake Water Quality products offer a comprehensive, satellite-derived monitoring system for assessing key water quality indicators in major large lakes, typically those greater than 50 hectares. These datasets are generated using optical satellite sensors, primarily Sentinel-2 MSI and Sentinel-3 OLCI, with earlier archives derived from Envisat MERIS. Spanning multiple spatial resolutions (100 m and 300 m) and temporal scales (10-day composites), they support both near-real-time and retrospective assessments of inland water quality.Key parameters include surface reflectance, turbidity, total suspended matter (TSM), chlorophyll-a concentration, trophic state index, and floating cyanobacteria risk—all essential for monitoring eutrophication, ecological health, and harmful algal blooms (HABs). The datasets cover the period from 2002 to the present, providing long-term continuity for environmental monitoring and scientific research, with focused coverage in Europe and Africa.All products are delivered using standardized geospatial grids (EPSG:4326) and include quality flags, detailed metadata, and validation against in situ observations to ensure reliability. Continuous improvements across product versions—such as enhanced atmospheric correction and updated retrieval algorithms—have significantly improved accuracy and usability. In addition, comprehensive user manuals, technical documentation, and support materials are available, making the data highly accessible to researchers, policymakers, and environmental managers.Digital Earth Africa (DE Africa) hosts these datasets for the African region, providing free and open access to both the data and associated tools.

Update Frequency

New scene-level data is added regularly, as the Lake Water Quality (LWQ) datasets are updated every 10 days (dekadal composites), with near-real-time versions typically available within 3 to 4 days after satellite acquisition.

License

DE Africa makes this data available under the Creative Commons Attribute 4.0 license https://creativecommons.org/licenses/by/4.0/.

Documentation

https://docs.digitalearthafrica.org/en/latest/data_specs/CGLM_Lake_Water_Quality_specs.html

Managed By

See all datasets managed by Digital Earth Africa.

Contact

helpdesk@digitalearthafrica.org

How to Cite

Digital Earth Africa - Copernicus Global Land Service - Lake Water Quality was accessed on DATE from https://registry.opendata.aws/deafrica-clgm-lwq.

Usage Examples

Tutorials
Tools & Applications

Resources on AWS

  • Description
    Lake Water Quality 2019-2024 (raster 100 m), 10-daily – version 1
    Resource type
    S3 Bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::deafrica-input-datasets/cgls_lwq100_2019_2024
    AWS Region
    af-south-1
    AWS CLI Access (No AWS account required)
    aws s3 ls --region af-south-1 --no-sign-request s3://deafrica-input-datasets/cgls_lwq100_2019_2024/
    Explore
    STAC V1.0.0 endpoint
  • Description
    Lake Water Quality 2024 - present (raster 100 m), 10-daily – version 2
    Resource type
    S3 Bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::deafrica-input-datasets/cgls_lwq100_2024_nrt
    AWS Region
    af-south-1
    AWS CLI Access (No AWS account required)
    aws s3 ls --region af-south-1 --no-sign-request s3://deafrica-input-datasets/cgls_lwq100_2024_nrt/
    Explore
    STAC V1.0.0 endpoint
  • Description
    Lake Water Quality 2002-2012 (raster 300 m), 10-daily – version 1
    Resource type
    S3 Bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::deafrica-services/cgls_lwq300_2002_2012
    AWS Region
    af-south-1
    AWS CLI Access (No AWS account required)
    aws s3 ls --region af-south-1 --no-sign-request s3://deafrica-services/cgls_lwq300_2002_2012/
    Explore
    STAC V1.0.0 endpoint
  • Description
    Lake Water Quality 2016-2024 (raster 300 m), 10-daily – version 1
    Resource type
    S3 Bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::deafrica-services/cgls_lwq300_2016_2024
    AWS Region
    af-south-1
    AWS CLI Access (No AWS account required)
    aws s3 ls --region af-south-1 --no-sign-request s3://deafrica-services/cgls_lwq300_2016_2024/
    Explore
    STAC V1.0.0 endpoint
  • Description
    Lake Water Quality 2024 - present (raster 300 m), 10-daily – version 2
    Resource type
    S3 Bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::deafrica-services/cgls_lwq300_2024_nrt
    AWS Region
    af-south-1
    AWS CLI Access (No AWS account required)
    aws s3 ls --region af-south-1 --no-sign-request s3://deafrica-services/cgls_lwq300_2024_nrt/
    Explore
    STAC V1.0.0 endpoint

Edit this dataset entry on GitHub

Tell us about your project

Home