EGU2020-4164, updated on 20 Jan 2021
EGU General Assembly 2020
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Open Hydrosystem Information Network: Greece’s new research infrastructure for water

Andreas Efstratiadis1, Nikos Mamassis1, Antonis Koukouvinos1, Demetris Koutsoyiannis1, Katerina Mazi2, Antonis Koussis2, Spyridon Lykoudis2, Elias Dimitriou3, Nikos Malamos4, Antonis Christofides5, and Demetris Kalogeras5
Andreas Efstratiadis et al.
  • 1National Technical University of Athens, Department of Water Resources & Environmental Engineering, Athens, Greece
  • 2National Observatory of Athens, Institute of Environmental Research & Sustainable Development, Penteli, Greece
  • 3Hellenic Center for Marine Research, Institute of Marine Biological Resources & Inland Water, Anavyssos, Greece
  • 4University of Patras, Department of Agriculture, Patra, Greece
  • 5National Technical University of Athens, Institute of Communication & Computer Systems, Athens, Greece

The Open Hydrosystem Information Network ( is a state-of-the-art information infrastructure for the collection, management and free dissemination of hydrological and environmental information related to Greece’s surface water resources. It was launched two years ago as part of a the national research infrastructure “Hellenic Integrated Marine Inland water Observing, Forecasting and offshore Technology System” (HIMIOFoTS), which also comprises a marine-related component ( The system receives and processes real-time data from automatic telemetric stations that are connected to a common web environment ( In particular, for each monitoring site it accommodates stage measurements, raw and automatically post-processed. Furthermore, in some specially selected sites time series related to water quality characteristics (pH, water temperature, salinity, DO, electrical conductivity) are provided. The web platform also offers automatically-processed information in terms of discharge data, statistics, and graphs, alerts for extreme events, as well as geographical data associated with surface water bodies. At the present time, the network comprises about 20 stations. However, their number is continuously increasing, due to the open access policy of the system (the platform is fully accessible to third-parties uploading their data). In the long run, it is envisioned that a national-scale hydrometric infrastructure will be established, covering all important rivers, lakes and reservoirs of the country.

How to cite: Efstratiadis, A., Mamassis, N., Koukouvinos, A., Koutsoyiannis, D., Mazi, K., Koussis, A., Lykoudis, S., Dimitriou, E., Malamos, N., Christofides, A., and Kalogeras, D.: Open Hydrosystem Information Network: Greece’s new research infrastructure for water, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-4164,, 2020


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