Be Kind, Rewind!
Flood risk assessment relies on hydrometric stations (sometimes called streamgages) that monitor river discharge, i.e. the amount of water flowing in rivers every hour or day.
L'eau des rivières et le changement climatique
Avant de s’écouler dans la rivière, l’eau suit un long périple au sein de la surface de collecte des eaux appelée bassin versant (en rouge ci-dessous).
Finding hidden patterns in the data using principal components analysis
In hydrology, it is frequent to analyse long time series coming from many sites. The figure below shows monthly streamflows at 207 sites in France for the period 1969-2014.