Monthly maps for discharge anomalies and Lowest alert level exceedance with a summary of the monthly hydrological situation.


Hydrological situation for May 2019

Figure 1. Exceedance of lowest discharge threshold level for May 2019.
Figure 1. Exceedance of lowest discharge threshold level for May 2019.
Figure 2. Exceedance of lowest water level threshold level for May 2019.
Figure 2. Exceedance of lowest water level threshold level for May 2019.
Figure 3. Classification of stations according to discharge historical data average percentile ranges for May 2019.
Figure 3. Classification of stations according to discharge historical data average percentile ranges for May 2019.

For May, the highest concentration of stations that exceeded their lowest threshold level is located in the Danube basin, mainly in the Sava and Tisza river basins but also in tributaries in northern and central area, with most stations in Croatia, Montenegro and Bosnia-Herzegovina, Hungary, the Slovak Republic, Republic of Serbia and Germany. There is also a remarkable concentration of stations across the Po basin in Italy, Norway, Oder and Vistula basins in Poland and Rhine river basin in southern Germany and Northern Switzerland.

A more dispersed distribution of stations with exceedances occurred along the Dnieper river in Belarus and Ukraine and Dniester river, also in Ukraine and across the Neretva river in Bosnia-Herzegovina, Ammeran and Langsjonbacken rivers in Sweden, Mihno, Llobregat, Guadiaro and Andarax river basins in Spain and Hyron river in Israel.

Stations that registered discharge values above the 90% quantile are mostly located across the Danube river basin, mainly in the Sava and Tisza river basins, the Vistula river in southern Poland and Dnieper and Dniester river basins in western Ukraine. This occurred less frequently for stations along the Rhine river basin in Germany, western Danube river basin in Austria and Germany, Oder river basin in Poland, Ebro river basin in north-eastern Spain and the Thames river basin in England.

Stations registering values below the 10% quantile are mainly located in the Elbe and the Rhine river basins in Germany and Ebro river basin in Spain. A lower concentration of stations is found across the Oder river basin in Poland, Dnieper river basin in northern Ukraine, the Thames river in England, the Barrow river in Ireland, the Tweed river in Scotland, western Danube in Romania and Glomma river in south-eastern Norway.