shows that the calculated magnitudes for the 50-year return period flood varied between 7000 and
7300 m3/s (for 1896–1919 and 1920–1949), ca. 10,000 m3/s (for 1878–1895 and 1950–1979) and
11,200 m3/s (for 1980–1997). These results show that climate shifts have a greater impact on the
estimation of the larger flood quantiles and that they are considerably more sensitive to even minor climate
change. Other studies based on gauge records have shown that hydroclimatic homogeneity may only have
occurred for 30-yr intervals during the 20th Century, something that also needs to be considered in flood
frequency analysis