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


Hydrological situation for January 2022.

Figure 1. Exceedance of lowest discharge threshold level for January 2022.
Figure 1. Exceedance of lowest discharge threshold level for January 2022.
Figure 2. Exceedance of lowest water level threshold level for January 2022.
Figure 2. Exceedance of lowest water level threshold level for January 2022.
Figure 3. Classification of stations according to discharge historical data average percentile ranges for January 2022.
Figure 3. Classification of stations according to discharge historical data average percentile ranges for January 2022.

by EFAS Hydrological Data Collection Centre,

During the month of January, the number of stations with exceedances is maintained when compared to the previous month. Most stations with exceedances can be found in Spain, as in December, with 30 stations in the Douro, Minho-Limia, Llobregat basins, and the eastern area (Turia, Serpis, and Seco basins). In second place is the concentration of stations in Germany (29 stations), mainly in the Rhine river basin and more isolated cases in the Danube and Elbe basins. In addition to German stations, there was also a high concentration of stations along the Danube in Bosnia & Herzegovina, Hungary, Slovenia, and southern Ukraine. There is also a notable concentration between Belarus, Poland and Lithuania (Dnieper, Neman, and Vistula basins). Some stations can be found too along Norway, and others more scattered in the Po river basin (Italy), Sweden and Iceland.

In January, 95 stations registered exceedances of the 90% quantile threshold.  62% of the stations were located in the Scandinavian Peninsula basins through Norway, Sweden, and Finland (47, five, and seven stations respectively). The situation was also remarkable the Danube basin, where 15 stations were spread throughout Austria, Romania, Ukraine, Germany, and Hungary. To a lesser degree, other stations over their 90% quantile were located in the Dniester and Dnieper basins in Ukraine (six stations), the south of France (four stations) and the Vistula basin (four stations). Moreover, three stations exceeded this value in the east of Spain, and also in Iceland, two more stations surpased their 90% quantile in the Hvala and Bakkahlaup basins. Isolated stations exceeding the 90% quantile can be seen in the Martat basin (Italy) and in the Elbe basin (Germany).

Finally, and according to the number of stations registering values below the 10% quantile, this has dramatically declined during January, summarizing a total of 19 stations that fulfill this criterion. The highest concentration of them corresponded to Spain, where six stations are in the Duero, Ebro, Guadalhorce, and Verde basins. In a more scattered pattern, we can find two stations in central Italy and another two in the south of Norway. Lastly, a considerable number of isolated stations also registering values below the 10% quantile can be found in the Thames river (England), Lahn river (Germany), Jökulsá á Fjöllum river (Iceland), Moll river (Austria), Oder river (Poland), Zagyva river (Hungary), Narew river (Belarus), and the Horyn and Narew rivers (Ukraine).