Meteorological and hydrological institute of Croatia is fundamental institution for meteorology and hydrology in Croatia. It is founded by decree of Government of People’s Republic of Croatia (NRH) on 27th of August 1947. Part of staff (fifty employees) and equipment was taken up from Geophysical institute and Ministry of construction of NRH, which conducted part of services from field of meteorology and hydrology (opservations, weather forecast, etc.). Until Croatia became independent state, ie. till 1991., MHS operate as republic institution, and after that as state one. MHS, in the name of state of Croatia perform international cooperation after 1992., when Croatia becomes member of World meteorological organisation (WMO). Over the years, as required by the growing range and amount of work, the number of employees increased to reach a stuff of more than 440.The Institute internal organisation and its scope have been constantly changing and adapting to the increasingly demanding requirements set on hydrological and meteorological services to meet the demands of economy, traffic and environment.