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Water 2019, 11(4), 703; https://doi.org/10.3390/w11040703

Pan-European Calculation of Hydrologic Stress Metrics in Rivers: A First Assessment with Potential Connections to Ecological Status

1
Center for Hydrology and Informatics, National Technical University of Athens, 15780 Athina, Greece
2
Hellenic Centre for Marine Research, Institute of Marine Biological Resources and Inland Waters, 19013 Anavissos Attikis, Greece
3
Stichting DELTARES, 177 Delft, The Netherlands
4
Department of Physical Geography, Faculty of Geosciences, Utrecht University Stichting DELTARES, 80115 Utrecht City, the Netherlands
5
Department of Ecohydrology, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, 12587 Berlin, Germany
6
Faculty of Civil and Geodetic Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia
7
Faculty of Biology, Aquatic Ecology, University of Duisburg-Essen, 45141 Essen, Germany
8
Centre of Water and Environmental Research, University of Duisburg-Essen, 45141 Essen, Germany
*
Author to whom correspondence should be addressed.
Received: 3 March 2019 / Revised: 29 March 2019 / Accepted: 1 April 2019 / Published: 5 April 2019
(This article belongs to the Special Issue Hydrologic Modelling for Water Resources and River Basin Management)
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Abstract

The hydrologic regime of a river is one of the factors determining its ecological status. This paper tries to indicate the present hydrologic stress occurring across European rivers on the basis of model integration. This results in a pan-European assessment at the resolution of the functional elementary catchment (FEC), based on simulated daily time-series of river flows from the model PCR-GLOBWB. To estimate proxies of the present hydrologic stress, two datasets of river flow were simulated under the same climate, one from a hypothetic least disturbed condition scenario and the second from the anthropogenic scenario with the actual water management occurring. Indicators describing the rivers’ hydrologic regime were calculated with the indicators of hydrologic alteration (IHA) software package and the river total mean flow and the relative baseflow magnitude over the total flow were used to express the deviations between the two scenarios as proxy metrics of rivers’ hydrologic alteration or hydrologic stress. The alteration results on Europe’s FEC-level background showed that Southern Europe is more hydrologically stressed than the rest of Europe, with greater potential for hydrology to be clearly associated with river segments of unreached good ecological status and high basin management needs. View Full-Text
Keywords: Europe; functional elementary catchments; hydrologic regime; indicators of hydrologic alteration; PCR-GLOBWB model Europe; functional elementary catchments; hydrologic regime; indicators of hydrologic alteration; PCR-GLOBWB model
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Panagopoulos, Y.; Stefanidis, K.; Faneca Sanchez, M.; Sperna Weiland, F.; Van Beek, R.; Venohr, M.; Globevnik, L.; Mimikou, M.; Birk, S. Pan-European Calculation of Hydrologic Stress Metrics in Rivers: A First Assessment with Potential Connections to Ecological Status. Water 2019, 11, 703.

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