Nepal Flash Flood Today: What Caused the Flood in Gorkha? Check Key Details

Nepal has been once again hit by a flash flood in the Gorkha district on Sunday, October 11, 2026. However, the exact cause of the landslide has not yet been confirmed, although multiple reports suggest that a suspected landslide may have triggered the sudden flooding.

It has been a tough year for Nepal. In August 2026, a massive flash flood triggered by a glacier collapse along the Nepal-China border made headlines across the world. The devastating disaster claimed more than 1400 lives and several thousand people missing. 

What Caused the Flash Flood in Gorkha, Nepal?

As per early reports, a landslide blocked the flow of the Budhi Gandaki River in Nepal's Gorkha district, followed by a sudden release of water that led to flash flooding downstream.

According to The Kathmandu Post, a landslide near Chumchet blocked a tributary of the Budhi Gandaki River before the water was suddenly released. Satellite images also showed a large landslide in the area, although the exact cause of the flooding still remained under investigation.

Sequence:

1. Landslide: A significant landslide of soil, rocks, and debris supposedly occurred.

2. Blockage: There was an obstruction of the river channel that limited water flow.

3. Release: The water flow was suddenly released.

4. Flooding: The water and sediments flooded houses and other infrastructure near the river.

What Are the Damages Reported in Nepal Flash Flood?

As per early reports, areas such as Chumnubri and Dharche have affected. Tens of houses have reportedly been swept away in the affected areas.

There have also been reports of significant infrastructure damage, including 6 bridges, comprising footbridges and motorable bridges. The Budhi Gandaki hydropower project has also suffered damage.

However, the relief is that no casualties or injuries have been reported so far in the initial reports. The Nepali Army has been carrying out rescue operations.

Why Does Nepal Experience Frequent Flash Floods?

1. Mountainous Topography: Nepal consists of mountainous regions where water moves fast down the slopes.

2. Monsoons: Nepal experiences monsoons that bring in a lot of rainfall, leading to floods.

3. Landslides: Landslides that may obstruct the flow of water will suddenly release large quantities of water after the obstruction is removed.

4. Melting Glaciers: High temperatures have led to glacier melting, increasing the possibility of flash floods from glacial lakes.