DHM has a mandate from the Government of Nepal to monitor all the hydrological and meteorological activities in Nepal. No agency is entitled to carry out such activities without a proper liaison with DHM. The scope of work includes the monitoring of river hydrology, climate, agrometeorology, sediment, air quality, water quality, limnology, snow hydrology, glaciology, and wind and solar energy. General and aviation weather forecasts are the regular services provided by DHM. As a member of the World Meteorological Organisation (WMO), DHM contributes to the global exchange of meteorological data on a regular basis.The Department of Hydrology and Meteorology (DHM) is an organization under the Ministry of Environment, Government of Nepal.
DHM headquarters is located in Kathmandu and it has three basin offices: Karnali Basin Office in Surkhet, Narayani Basin Office in Pokhara and Kosi Basin Office in Dharan.