UN-SPIDER's Disaster Response to the Mozambique Flooding (February 2026)

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Overview of the Disaster and Objectives

 

Disaster Overview

In January and February 2026, Mozambique was struck by a catastrophic humanitarian crisis as torrential rains from Tropical Cyclone FYTIA and the subsequent intense Tropical Cyclone GEZANI devastated the region. The relentless rainfall, combined with massive river inflows from upstream neighboring countries, left the soil completely saturated and major river basins well above alert levels.

According to reports from Al Jazeera (January 22, 2026) and UN situation updates, the scale of the disaster was immense:

·      Human Impact: Over 600,000 people were affected, with approximately 392,000 displaced as floodwaters submerged entire villages.

·      Infrastructure Damage: Tens of thousands of homes were destroyed. Critical infrastructure, including over 200 health facilities and 710,000 hectares of agricultural land, was inundated, sparking severe concerns over food security and the spread of waterborne diseases like cholera.

·      Focus Area: The Massingir Dam in Gaza Province became a point of extreme concern. With the reservoir reaching full capacity, there was an imminent risk of emergency discharges that would further devastate downstream communities such as Chokwe.

 

Figure 1. Rescue efforts continue for hundreds of families cut off by flooding, with some taking refuge on rooftops, car roofs, or in treetops in southern Mozambique after days of near-continuous rain that has also forced dams, including some in neighbouring countries, to increase water releases. [Luisa Nhantumbo/EPA], Reference: Al Jazeera. (2026, January 22). Torrential rains displace thousands in Mozambique as floods wreak havoc. https://www.aljazeera.com/gallery/2026/1/22/torrential-rains-displace-thousands-in-mozambique-as-floods-wreak-havoc

Objectives of this Web Report

 

Following the activation of the Assessment and Analysis (A&A) Cell and the deployment of a United Nations Disaster Assessment and Coordination (UNDAC) team, UN-SPIDER was requested to provide specialized remote sensing support. The specific objectives for this mission were:

·      Massingir Dam Monitoring: To conduct high-frequency monitoring of the dam and its reservoir levels using Very High Resolution (VHR) SAR imagery to provide situational awareness for the UNDAC team.

·      All-Weather Monitoring: To provide continuous surveillance through the dense cloud cover of Cyclone Gezani, which rendered traditional optical satellites ineffective.

·      Operational Safety for UNDAC Experts: To deliver analyzed satellite products to the Environmental Experts of the UNDAC team prior to their site visit, ensuring they had a remote "first look" at the flood conditions and accessibility before conducting physical inspections.

·      Priority Mapping for Response: To assist the National Institute for Disaster Management (INGD) and humanitarian partners in identifying safe logistics routes and prioritizing areas for life-saving interventions.

 

Figure 2. Airplane monitoring overview of Massingir Dam provided by UNDAC.

Satellite-Based Monitoring of Massingir Dam

 

To meet the urgent requirements of the UNDAC team, UN-SPIDER collaborated with the Japanese SAR constellation operator iQPS. The use of iQPS's high-resolution SAR data was critical for obtaining clear imagery of the dam despite the persistent storm clouds and heavy rain.

 

Monitoring Results from iQPS (QPS-SAR)

 

The high-resolution snapshots provided by iQPS allowed the team to:

  • Detect immediate changes in water levels and the extent of the reservoir's expansion in near-real-time.
  • Identify surface anomalies and debris accumulation near the dam wall and spillways.
  • Map the surrounding flooded areas to assess the impact on roads and access points leading to the dam.

This timely data provided the UNDAC team with vital information regarding the environmental conditions at the site before their arrival.

 

Figure 3. Near-real-time monitoring of Massingir Dam by iQPS’s SAR constellation (February 2026).

Potential of Satellite Constellations in Disaster Response and UN-SPIDER's Role

 

The 2026 Mozambique floods highlighted the indispensable role of SAR satellite constellations like iQPS. The ability to "see" through heavy storm clouds and provide data at high revisit rates allowed for a level of persistent monitoring that was previously impossible during tropical cyclones.

In the context of the Massingir Dam, this technology provided:

·      Enhanced Situational Awareness: Providing current flood maps to UNDAC experts before they entered high-risk zones.

·      Rapid Response Support: Enabling INGD to monitor the status of critical water infrastructure 24/7, regardless of weather conditions.

 

UN-SPIDER’s role remains centered on bridging the gap between space technology and humanitarian action. By translating complex SAR data into clear, analysed products for the UNDAC team, UN-SPIDER ensures that advanced space-based information is used effectively to save lives and protect critical infrastructure in the face of climate-induced disasters.