Winter and summer 7-day low flows of eighteen natural rivers in the St. Lawrence River watershed of Quebec were analyzed over the period from 1934 to 2000. The rivers were first subdivided into three modes using principal component analysis. Two of these modes are located on the south shore of...

We analyzed the temporal variability of annual precipitation measured at five stations in the Macta (14,380 km<Superscript>2</Superscript>) and Tafna (4,949 km<Superscript>2</Superscript>) catchments located in northwestern Algeria, in connection with climate indices over the 1950–2004 period. Analysis of the temporal variability using linear...</superscript></superscript>