The International Center for Integrated Mountain Development (ISIMOD) has suspected that the Bhotekoshi river in Rasuwa may have been flooded due to the bursting of a glacier and not due to rain.

In a press release today, Isimod said that Himtal may have burst. 

This afternoon, the Department of Water and Meteorology also said that there was no heavy rain in the areas around Nepal and China. It will take more time to identify the specific cause of the flood in Rasuwa

, but according to preliminary research, the flood was not caused by excessive rain. Only after the seasonal cloud cover is removed, a detailed investigation can be done through further study through satellite images', the statement said, 'There is a need for a multi-sectoral team including geologists, glaciologists, and climatologists to investigate the real cause of the flood.' Pradeepman Dangol, Senior Hydrology Researcher of ISIMOD, said that it is suspected that Himtal has exploded . He says that there is no concrete evidence of this so far. He said, 'According to Isimod's 2021 study, a glacier in the upper region of the Trishuli River in Tibet was in the high risk category . From 1990 to 2020, the size of glaciers in the Trishuli river basin has increased by 33 percent and the number by 16 percent. Satellite images taken before the flood also show an increase in the number of ice lakes, but currently due to clouds, satellite analysis has been hampered.' Dangol also said that there is no sign of heavy rains in the upper regions of China recently, and this is not the main cause of the floods. He said, 'It is becoming more and more difficult to understand how the risk arises in the hilly area . Heavy rain does not always cause flooding and sometimes it is not the only cause. Keeping this in mind, relief, reconstruction and preparedness plans should be made.'