Datasets > Sri Lanka > 2020-2024

Satellite detected water extent in Gampaha, Colombo and Kalutara Districts, Western Province as of 04 June 2024

The Centre for Humanitarian Data · 2024 Full Details

Full Details

Title
Satellite detected water extent in Gampaha, Colombo and Kalutara Districts, Western Province as of 04 June 2024
Description
**UNOSAT code: FL20240603LKA, GDACS ID: 1102660** This map illustrates satellite-detected water extent in Gampaha, Colombo and Kalutara Districts, Western Province, Sri Lanka as observed from a Sentinel-1 image acquired on 04 June 2024 at 00:25 UTC. Within the analysed areas of about 8,000 km², a total of about 124 km² of lands appear to be affected with flood waters. Based on WorldPop population data and the flood extent about 100,000 people are potentially exposed. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to the United Nations Satellite Centre (UNOSAT). Important note: Flood analysis from radar images may underestimate the presence of standing waters in built-up areas and densely vegetated areas due to backscattering properties of the radar signal.
Creator
UN Operational Satellite Applications Programme (UNOSAT)
Publisher
The Centre for Humanitarian Data
Temporal Coverage
2024-06-04
Date Issued
2024-06-05
License
http://www.opendefinition.org/licenses/cc-by-sa
Access Rights
Public
Date Added
August 30, 2024
Provenance Statement
The metadata for this resource was last retrieved from Humanitarian Data Exchange on 2025-08-23.

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Cite and Reference

  • Citation
    UN Operational Satellite Applications Programme (UNOSAT) (2024). Satellite detected water extent in Gampaha, Colombo and Kalutara Districts, Western Province as of 04 June 2024. The Centre for Humanitarian Data. https://data.humdata.org/dataset/4481b66d-3f64-41e2-bd73-e3481ee62683 (dataset)
  • BTAA Geoportal Link

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