Sep 03, Kathmandu - The devastating floods that recently struck Nepal have highlighted the broader regional risks posed by natural disasters in the Himalayas. With rivers crossing the border from Nepal into India, excessive rainfall and flooding in Nepal threaten Indian territories as well, underscoring the need for cross-border cooperation.

Most of Nepal’s rivers, originating in the mountains and hills, flow southward into India, ultimately merging into the Ganga River. Nepal is home to over 6,000 rivers and streams, with major ones including the Koshi, Gandaki, Karnali, and Mahakali. Smaller rivers such as Bagmati, Kamla, Rapti, and Babai also contribute to flood risks in the Indian plains.

Climate experts warn that each flood event in Nepal does not impact India uniformly. Heavy rains in the mountains can carry large debris, soil, and silt into the rivers, intensifying flooding downstream. Conversely, flood severity upon reaching Indian territory can vary depending on rainfall in India, river water levels, embankments, drainage systems, and regional development.

Bihar remains the most vulnerable Indian state due to rivers originating from Nepal. The region is frequently affected by floods, with the Koshi River often called "Bihar's sorrow." Similarly, the Gandaki, Bagmati, and Kamla rivers have repeatedly caused floods in the state.

Northern Uttar Pradesh, including Gorakhpur, Bahraich, Lakhimpur Kheri, and Shravasti, faces risks from the Ghaghara, Rapti, and Gandaki rivers. The Mahakali–Sharda system also threatens parts of Uttarakhand, while some areas in West Bengal may experience impacts from the Mahananda and Metchi rivers.

Experts emphasize that Nepal’s floods serve as a warning for India. Strengthening data sharing, early warning systems, flood forecasting, and disaster management cooperation between the two countries is vital. As climate change makes rainfall patterns and extreme weather events more unpredictable in the Himalayas, regional collaboration on river management and disaster preparedness becomes increasingly crucial.

The recurring floods in Nepal are not just a national issue but part of a shared Himalayan river system, posing a regional challenge that requires joint solutions.