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Article

OpenHi.net: A Synergistically Built, National-Scale Infrastructure for Monitoring the Surface Waters of Greece

1
Department of Water Resources & Environmental Engineering, National Technical University of Athens, 15780 Athens, Greece
2
Institute for Environmental Research & Sustainable Development, National Observatory of Athens, 15236 Athens, Greece
3
Institute of Marine Biological Resources & Inland Waters, Hellenic Centre for Marine Research, 19013 Anavyssos, Greece
4
Institute of Communication and Computer Systems, National Technical University of Athens, 15780 Athens, Greece
5
Department of Agriculture, University of Patras, 26504 Rio, Greece
6
Department of Agriculture, University of Ioannina, 45110 Ioannina, Greece
*
Author to whom correspondence should be addressed.
Academic Editor: Paul Kucera
Water 2021, 13(19), 2779; https://doi.org/10.3390/w13192779
Received: 27 July 2021 / Revised: 28 September 2021 / Accepted: 30 September 2021 / Published: 7 October 2021
(This article belongs to the Special Issue Application of Smart Technologies in Water Resources Management)
The large-scale surface-water monitoring infrastructure for Greece Open Hydrosystem Information Network (Openhi.net) is presented in this paper. Openhi.net provides free access to water data, incorporating existing networks that manage their own databases. In its pilot phase, Openhi.net operates three telemetric networks for monitoring the quantity and the quality of surface waters, as well as meteorological and soil variables. Aspiring members must also offer their data for public access. A web-platform was developed for on-line visualization, processing and managing telemetric data. A notification system was also designed and implemented for inspecting the current values of variables. The platform is built upon the web 2.0 technology that exploits the ever-increasing capabilities of browsers to handle dynamic data as a time series. A GIS component offers web-services relevant to geo-information for water bodies. Accessing, querying and downloading geographical data for watercourses (segment length, slope, name, stream order) and for water basins (area, mean elevation, mean slope, basin order, slope, mean CN-curve number) are provided by Web Map Services and Web Feature Services. A new method for estimating the streamflow from measurements of the surface velocity has been advanced as well to reduce hardware expenditures, a low-cost ‘prototype’ hydro-telemetry system (at about half the cost of a comparable commercial system) was designed, constructed and installed at six monitoring stations of Openhi.net. View Full-Text
Keywords: observation networks; low-cost solutions; surface water monitoring; discharge estimation; open access observation networks; low-cost solutions; surface water monitoring; discharge estimation; open access
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MDPI and ACS Style

Mamassis, N.; Mazi, K.; Dimitriou, E.; Kalogeras, D.; Malamos, N.; Lykoudis, S.; Koukouvinos, A.; Tsirogiannis, I.; Papageorgaki, I.; Papadopoulos, A.; Panagopoulos, Y.; Koutsoyiannis, D.; Christofides, A.; Efstratiadis, A.; Vitantzakis, G.; Kappos, N.; Katsanos, D.; Psiloglou, B.; Rozos, E.; Kopania, T.; Koletsis, I.; Koussis, A.D. OpenHi.net: A Synergistically Built, National-Scale Infrastructure for Monitoring the Surface Waters of Greece. Water 2021, 13, 2779. https://doi.org/10.3390/w13192779

AMA Style

Mamassis N, Mazi K, Dimitriou E, Kalogeras D, Malamos N, Lykoudis S, Koukouvinos A, Tsirogiannis I, Papageorgaki I, Papadopoulos A, Panagopoulos Y, Koutsoyiannis D, Christofides A, Efstratiadis A, Vitantzakis G, Kappos N, Katsanos D, Psiloglou B, Rozos E, Kopania T, Koletsis I, Koussis AD. OpenHi.net: A Synergistically Built, National-Scale Infrastructure for Monitoring the Surface Waters of Greece. Water. 2021; 13(19):2779. https://doi.org/10.3390/w13192779

Chicago/Turabian Style

Mamassis, Nikos, Katerina Mazi, Elias Dimitriou, Demetris Kalogeras, Nikolaos Malamos, Spyridon Lykoudis, Antonis Koukouvinos, Ioannis Tsirogiannis, Ino Papageorgaki, Anastasios Papadopoulos, Yiannis Panagopoulos, Demetris Koutsoyiannis, Antonis Christofides, Andreas Efstratiadis, Georgios Vitantzakis, Nikos Kappos, Dimitrios Katsanos, Basil Psiloglou, Evangelos Rozos, Theodora Kopania, Ioannis Koletsis, and Antonis D. Koussis 2021. "OpenHi.net: A Synergistically Built, National-Scale Infrastructure for Monitoring the Surface Waters of Greece" Water 13, no. 19: 2779. https://doi.org/10.3390/w13192779

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