A catastrophic climate event has struck Southeast Asia as torrential rains caused the Gandak River to breach its banks, reaching water levels not seen since the 1960s. This environmental disaster has displaced thousands of people and submerged entire villages across the Bihar region of India and mountainous provinces in Nepal, highlighting the growing vulnerability of the region to extreme weather.

A Landscape Transformed by Water

Between September 24th and 27th, what began as typical seasonal rains escalated into a historic catastrophe. Southeast Asia faced a series of torrential downpours that transformed the geography of Nepal and India into a chaotic scene of record-breaking floods and devastating landslides.

What is the Gandak River? Also known as the Narayani in Nepal, it is a vital waterway that flows from the Himalayas into the Ganges. Because it drains vast mountainous regions, it is prone to sudden swells during the monsoon season—the annual period of heavy rainfall that is crucial for agriculture but can be deadly when extreme.

The sheer force of the water did not just overflow the banks; it caused the total collapse of dikes and embankments, flooding human settlements and vast stretches of farmland across hundreds of kilometers. According to reports, the urban areas of Bagaha, Areraj, and Fulia Khand were almost entirely submerged, forcing thousands of residents to flee their homes in a desperate search for safety.

Shocking Data: Record Levels

Location Water Level Significance
Devghāṭ (Nepal) 11.94 meters Highest since the 1960s
Bagaha (India) 91.25 meters New historical record

Areas Most Affected

  • 📍 Bihar State (India): West Champaran, Saran, and Muzaffarpur districts.
  • 📍 Nepal Provinces: Lumbini and Gandaki.
  • 📍 Infrastructure: Total collapse of river containment systems.

The Eye in the Sky: NASA's Evidence

To understand the magnitude of this tragedy, NASA deployed its Terra and Aqua satellites, utilizing the MODIS (Moderate Resolution Imaging Spectroradiometer) instrument. This technology allows scientists to track changes in land and water surfaces from space.

Comparative images taken between September 20th and September 29th provide undeniable proof of the disaster, showing a massive and aggressive expansion of the riverbed over previously inhabited zones and fertile lands.

Source: NASA Official Portal