Satellite-Detected Flood Extents in Ache Province, Indonesia, November-December 2025

From 27 November to 4 December 2025, satellite imagery detected cumulative flood water extents in Ache Province, Indonesia. The analysis by the United Nations Satellite Centre (UNOSAT) covers approximately 56,800 km², identifying about 1,430 km² of land affected by flood waters and estimating 226,000 people exposed. This is a preliminary analysis from 2025, last updated in the platform in June 2026.

Use Cases

• Mapping flood-affected areas based on satellite-detected water extents mentioned in the description
• Estimating population exposure to flooding based on integrated WorldPop demographic data
• Conducting preliminary damage assessment for disaster response planning based on the analyzed flood extents

Strengths

• Analysis covers a specific area of about 56,800 km² in Ache Province
• Provides quantified impact estimates: about 1,430 km² of flooded land and 226,000 people exposed
• Data is sourced from the authoritative United Nations Satellite Centre (UNOSAT)

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download
• The analysis is described as preliminary and not yet validated in the field
• Column-level documentation is absent; field semantics must be inferred after download

Provenance

Source

United Nations Satellite Centre (UNOSAT)

Collection Method

Analysis of multiple satellite imagery acquisitions

Time Range

27 November to 4 December 2025

Freshness

Last updated 2026-06-24 09:46:25.135552; freshness should be verified

Geography

Ache Province, Indonesia