by EFAS Hydrological Data Collection Centre,

During the month of November, the highest concentration of stations with exceedances is located in the Danube river basin (in Croatia and Bosnia and Herzegovina), the Po river basin (Italy), and  across northern Spain (in the Douro, Minho, Ter, Llobregat, Tordera, Besòs, and Foix basins). There are also some additional stations in Italy with exceedances (Tiber and Garigliano basins). In a more isolated way, there are four stations in the Oder river basin (Poland), one in the Elbe and the Rhine river basins (Germany), another in Hungary (Danube river basin), and lastly, five stations in southern Norway.

Regarding stations registering values above the 90% quantile, a small number of stations (91) exceeded this value in November. Fifty-six per cent of the stations were located in the Scandinavian Peninsula basins throughout Norway, Sweden, and Finland with 26, 15, and 10 stations respectively. It was also remarkable Spain, where several basins where involved in the east (Ebro, Jucar, Gallinera, Algar, and Monegre) and south (Guadalquivir) of the country. Similar number of stations (15) surpassing the 90% quantile occurred in the central western Italy, in the basins: Tiber, Marta, Garigliano, and Fiora. To a lesser degree, other stations over their 90% quantile were located in the Danube basin throughout Bosnia and Herzegovina (three stations), and one isolated station in Germany. Other three stations exceeded this value in the Dnieper basin in Belarus and Ukraine. Iceland also had two stations which surpassed their 90% quantile in the Nupsvoetn and Bakkahlaup basins. Isolated stations exceeding the 90% quantile can be seen in the Pripyat basin (Belarus) and in the Rhine basin (Luxembourg).

Finally, and according to those stations registering values below the 10% quantile (52 in total), the highest concentration of them corresponded to the Danube basin, mainly the central area, where 12 stations are spread along the borders of Austria, Croatia, Slovenia, and Hungary. Still in the Danube basin we can find three stations in Serbia, three more in Romania, one station in Germany, and one in Ukraine. Secondly, we also have a high density of stations fulfilling this criterion in the Rhine basin, with seven stations in Switzerland and four stations in Germany. In a more dispersed pattern, six stations can be found in the polish basins of Oder and Vistula, and another six stations in Ukraine (Dnieper and Dniester basins). Finally, a lower density of stations under the 10% quantile occurred in Spain (five stations in the Minho, Ebro and Verde basins), the south of England (two stations in the Thames and Exe basins), and in France (two stations in the Seine and Garonne basins).