by EFAS Hydrological Data Collection Centre,

In June, the highest concentration of stations that exceeded their first threshold level is between Switzerland, Italy, Austria, and southern Germany (mainly on the Rhine), the Po, and the western Danube basins. In a more dispersed way, along the Danube basin, there are exceedances in Hungary, Romania, Ukraine, Croatia, Slovenia, and Kosovo. In eastern Europe, the Dnieper river basin stands out with 9 stations overpassing thresholds. A lower concentration of stations can be observed in northern Norway and Sweden, in Iceland, and in eastern Spain (around the Jucar basin and in Catalonia), and at last in central Italy (Tiber and Garibliano basins).

Regarding stations registering values above the 90% quantile, 120 stations exceeded this value in June. The vast majority of these stations were located in central Europe, where the Danube basin stands out with nearly 30% of the total stations exceeding the 90% quantile. These are located through Germany, Austria, Czech Republic, Slovakia, Ukraine, Hungary, Romania, Bulgaria, Serbia, Bosnia and Herzegovina, and Slovenia. Other basins with stations surpassing the 90% quantile in central Europe are Vistula, Oder, Elbe, Rhine, and Dnieper. Another considerable number of stations also surpassing the 90% quantile (just over 16%) can be found in Spain, mainly in the Ebro basin and the rest in stations scattered between different basins at the north, east, and south of the country. To a lesser degree, other stations above the 90% quantile are located in river basins in the Nordic countries (Norway, Sweden, Finland, and Iceland) and the British Isles (southern England and Ireland). A handful of stations over the 90% quantile occurred in several basins in France (Meuse, Seine, Loire, and Rhône) and isolated stations in the Maritsa\Evros basin (Bulgaria), Daugava basin (Latvia), Dniester basin (Ukraine), and Narva basin (Estonia).

At last, and focusing on those stations registering values below the 10% quantile, although they are quite dispersed throughout Europe, we can find nearly a third of them in Spain, along the Douro basin in the north, the Jucar basin in the east, and the Guadalquivir and Verde basins in the south. In Germany, we have 3 stations in the Elbe and Danube basins, 2 stations can be found in Belgium in the Scheldt and Meuse basins, and 2 more in France in the Garonne and Rhone basins. Finally, we can also find isolated stations with values under the 10% quantile in the Suir river (Ireland), Hvíta river (Iceland), Ryton river (England), Lagen river (Norway), Uzh river (Ukraine), and the Gothemsan river located on the Swedish island of Gotland.