In the last twenty years, occurrences of hydrological droughts of surface waters have become more frequent and intense compared to the previous period, and the variability between individual years has also increased. Very dry and very wet years alternate with intermediate periods of hydrologically normal years. The intensity of droughts during the growing season has become more frequent, although, in the last decade, it has been less intense than in the decade before. In particular, the first quarter of the year has been wetter in the last decade, but there are still some individual years with drought during this period. However, no drought exceeding the usual levels has been recorded in the last quarter of the year since 2011. From 1961 to 2023, 2003 stands out for its dryness, being dry in all quarters of the year. After 2000, the notably dry years were also 2007, 2011, and 2022.