Down-scaled operational oceanographic system has been developed for the coastal wa-ters of Korea using a Regional Ocean Modeling System (ROMS). The operational modeling system comprises of coastal circulation model ROMS coupled with wave model SWAN, internally coupled sediment transport model CSTMS and externally nested water quality model CE-QUAL-ICM. The hydrodynamic results have been calibrated with tidal surface elevation and veri-fied with currents observed by bottom mounted acoustic current meter ADCP or AWAC for the coastal waters of Korea. For the validation of predicted results we use real-time monitoring data such as hydrodynamic observation monitored by remote Buoy system and ocean observatory tower and 1 hour averaged surface currents derived from HF-Radar system. The suspended solid particles (SS) image generated from Geostationary Ocean Color Imager (GOCI) of the satellite COMS will be used for validation of the model prediction on the suspended sediment transport. This operational coastal modeling system will also be used for validation of surface vector algorithm which will be developed through the pattern analysis of SS or Chlorophyll images derived from hourly produced GOCI data.