Satellite Images of West Attica Flood Help Government Response

A flood west of Athens, Greece, was caused by heavy rain on November 15-16, and has killed 22 people.

The cities of Mandra, Elefsina, and Nea Peramos were most affected with 1,184 buildings suffering damage requiring significant government compensation.

European Space Imaging captured 30 cm resolution images of the area using the WorldView-4 satellite on November 21. The images clearly show the damage wrought by the torrents of water and mud, and the path the water took as it flowed down the sides of the mountains and into gullies.

“The satellite images were made immediately available to the Space Applications and Remote Sensing Institute of National Observatory of Athens for the purpose of planning and maintaining situational awareness of the event in collaboration with first responders and government agencies,” said Vana Giavi, Managing Director of TotalView, European Space Imaging’s partner in Greece.

It has been reported that inappropriate urban development may have been a major contributing factor to the event’s severity, as natural floodways have been blocked by unlicensed construction.

“The very high resolution satellite imagery will be an invaluable tool for the Greek government to detect the presence of illegal buildings, and to plan future flood-prevention infrastructure,” said Adrian Zevenbergen, Managing Director of European Space Imaging.

Mandra-Before-17NOV21_WV4_EUSI_Greece_Mandra_flooded-streets-before_afterMandra-After-17NOV21_WV4_EUSI_Greece_Mandra_flooded-streets-before_after

Related Stories

Banner saying: "Webinar: Turning Satellite Data into Actionable Intelligence for Critical Energy Infrastructure"

GEOSeries: Turning Satellite Data into Actionable Intelligence for Critical Energy Infrastructure

See how satellite imagery can make critical infrastructure monitoring more frequent, targeted and efficient. Monitoring hundreds or thousands of kilometres of pipelines, power lines and other critical infrastructure traditionally requires extensive field inspections, vehicle patrols or aerial surveys. Satellite-based monitoring offers a different approach: regularly analysing large networks, identifying potential risks and directing teams to the locations that require attention.

Read More »
wildfire

VHR Satellite Images for Wildfire Monitoring 

High temperatures are breaking records, vegetation is drying up, and catastrophic wildfires are raging across Europe. Emergency responders are already turning to satellite imagery for fire monitoring and damage analysis – but few know its full potential. Near Real-Time (NRT) capabilities deliver critical images just 15 minutes after collection. Intraday imaging captures a fire as it develops throughout the day. And 8-band multispectral imagery lets responders see through haze, light fog, and other atmospheric conditions – including wildfire smoke itself.

Read More »
Nature Restoration

Earth Observation Turns Ecological Targets into Measurable Outcomes: How Satellite Imagery Supports Compliance with Europe’s Nature Restoration Regulation

The EU’s Nature Restoration Regulation (NRR) entered into force in 2024 and set legally binding targets to restore degraded ecosystems across Europe. With National Restoration Plans due in September 2026, Member States face an urgent question: how do you map, plan and monitor restoration across millions of hectares in a consistent, verifiable way? Earth Observation (EO) – and Very High Resolution (VHR) multispectral satellite imagery in particular – is increasingly the answer.

Read More »