The analysis of extreme events in hydrology is without doubt
of crucial importance for engineering practice regarding water resources
design and management. For example, hydraulic constructions
such as dams are usually required to hold back extreme floods
with a defined return period. One common approach to estimate such
flood events with a certain return period (the return level), is the
annual block maxima approach, where for every observed year the
maximal streamflow is determined and then a distribution to this series
of annual maxima is fitted. From the obtained distribution, the
streamflow of extreme events can be estimated