There were no central tendency for responsible for hydro-meteorological data collection prior to 1990.The hydro-meteorological data were collected by the respective line agencies to fulfill their own requirement along with the implementation of projects.It was only during the implementation of the Bhutan Power System Master Plan (PSMP) project by the erstwhile Department of Power (DoP) under the Ministry of Trade and Industry (MTI) in 1990-1993, the national hydro-meteorological network covering whole country was established. A central agency for hydrology and meteorology was established and mandated with national responsibility for hydro-meteorological data collection, archiving, analysis and dissemination. The meteorology functions were also taken over by DoP from the Ministry of Agriculture (MoA). The Hydro-met Unit under the Department of Telecom (DoT) was handed over to the Department of Power and was renamed as the Flood Warning Section, when DoT was corporatized in January 2002. The Flood Warning Section is responsible for transmitting rainfall and river level data to India for flood forecasting and warning purposes to the Indian States of Assam and West Bengal. Flood warning activity is undertaken by the Royal Government of Bhutan in collaboration between the Central Water Commission (CWC) of India.
When the Department of Power under the Ministry of Trade and Industry (MTI) was restructured and bifurcated into the Department of Energy (DoE), Bhutan Power Corporation (BPC) and Bhutan Electricity Authority (BEA) in July 2002. The Hydromet Services Division (HMSD) was one of the three newly created divisions under the Department of Energy with following functions and responsibilities:
- Planning and designing of hydro-meteorological network for data collection and database management that are required for hydro power planning, weather and flood and weather forecasting as well as for energy generation scheduling.
- Operations of the hydro-meteorological for collection of data and dissemination to the end users (hydro-power plants, other design/development agencies, etc.).
- Publication of data books.
- International cooperation in flood warning and flood prevention measures.
- Recently the division is also mandated as the technical agency responsible to provide early warning related to hydro-meteorological hazards including the GLOF early warning.
The division has three sections: Hydrology, Meteorology and Flood Warning Sections with 139 regular staff.
Maintain and operate a functional hydro-meteorological network to provide standard products and services for fulfill the national, regional and international requirements.
Provide reliable hydro-meteorological information and services needed for various including weather & flood forecasting and warning.
General: to provide an effective national source of hydro-meteorological data, service, and advice to meet the needs of the general public, emergency services and other specialized users.
- To develop effective hydro-meteorological and flood warning services network and database to provide appropriate and timely services and products.
- To strengthen institutional and capacity development to staff and
- To Strengthen cooperation with national, regional and international organization to carry out research and development study related to hydro-meteorology and water resources