The Water Resources Division of Department of Land Resource Managment (DLRM) collects, manages and provides surface water and groundwater resources information for the Northern Territory. To provide this information a network of surface water, rainfall and groundwater sites (Pluviometer sites - rainfall- River gauging stations - river stage, rainfall, temperature and evaporation- Tidal gauging stations - tide stage- Flow sites - river stage- Water quality sites - water quality and Groundwater sites - bores and wells) are operated. The information collected is stored, managed and disseminated to the public using the Hydstra database. HYDSTRA database also provides a basis for data analysis, modelling and flow predictions.