Being celebrated on September 9, 2026, Himalaya Diwas assumes an especially significant meaning for the world's most vital mountain ecosystem. While being a unique natural phenomenon, the Himalayas are also a huge natural water reservoir. Its glaciers and seasonal snowfalls nourish numerous river systems, agricultural and hydroelectric activities and are a source of livelihood for many people in South Asia. This year, the emphasis of Himalaya Diwas will be made on a warning signal, which cannot be disregarded anymore: melting glaciers and reduced snow cover pose a threat to water security.
The Hindu Kush Himalayan (HKH) area is the source of numerous river basins such as the Indus, Ganga and Brahmaputra river basins. Combined with other Himalayan rivers, they meet the water demands of almost two billion people. Glaciers and snow serve as natural reservoirs of meltwater.
503.1) A Cryosphere Under Pressure
The signals in 2026 are worrying indeed. According to the International Centre for Integrated Mountain Development (ICIMOD), snow cover in the Hindu Kush Himalaya was 27.8% lower than the long-term average, the fourth successive year of below-normal snow persistence. Below-normal snow persistence was observed in ten out of the twelve major river basins of the region.
There are notable changes in the glaciers in India too. Reports by the government suggest that there are accelerated and non-uniform losses in the mass of glaciers in the Himalayas, and retreat rates vary from one river basin to another. The mean retreat rate is about 15 metres annually. Some of the glaciers in the Brahmaputra river basin are showing much higher average retreat rates.
The effects are paradoxical. On one hand, increased melting leads to increased runoff, and therefore, flash floods, landslides and glacial lake outburst floods (GLOFs). However, on the other hand, due to lack of ice stores, the problem is reverse in the long run: decreased availability of water in dry seasons. The Food and Agriculture Organization warns about increasing problems regarding water, food and livelihood security.
503.2) From Glacial Loss to Water Insecurity
The northern river basins will not react in the same way to the climatic change. The Indus is heavily dependent on the melting of snow and glaciers, while Ganga and Brahmaputra get a greater share from monsoon rains. Yet, changes in the melting regime of snow and ice can lead to imbalances in all three river basins.
In India, this is not the only problem as its agriculture, drinking water, hydro power and groundwater depend on the flow regime of the Himalayan rivers. Lack of snow in storage can affect the seasonality of run-off leading to periods of excess water supply and water shortage at peak use time.
Modern research has also shown that the entire cryosphere of the Himalayas, including decrease in snow cover and thawing of permafrost is under threat.
503.3) Himalaya Diwas: A Call for Action
Thus, Himalaya Diwas 2026 needs to go beyond being an event of mere celebration. Instead, it must remind us that safeguarding the Himalayas is integral to safeguarding India’s water future.
Improvements in glacier and snow monitoring, remote sensing, early warning systems, resilient infrastructure, and cross-boundary cooperation will be crucial. Effective water resource management will go hand-in-hand with these initiatives, especially for agriculture and hydroelectricity.
The Himalayan region is often referred to as the “Water Tower of Asia.” And when we think about it in 2026, the message becomes very clear. Water towers can hold huge amounts of water but once its capacity becomes low, the downstream areas face the brunt of this.
On this Himalaya Diwas, we understand one thing clearly: save the ice to save the rivers.
Team Yuva Aaveg-
Adarsh Tiwari
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