establishing and operating the stations network for observation and measurement of surface water and groundwater amount and quality
 collecting and storing observed data, building up and operating information system of hydrology
 processing observed data and their temporal and spatial assessment
 analysing hydrological characteristics and determining design quantities
 ensuring hydrological forecasting and flood services, issuing current hydrological forecasts and information
 processing regional hydrological studies
 publishing selected information and data
 developing and applying hydrological instrumentation at all fields of hydrological activities
 methodological guidance of hydrology sections at regional offices and investigating development tasks
 implementing international involvements