Figure 6
(a) Normalized annual suspended sediment yield (SSY) and water discharge (Q) plotted as cumulative annual values. Shaded bars indicate the two extreme El Niño events (1982–1983 and 1997–1998). (b) Daily Q series (m3/s) of rivers, from north to south. The dashed horizontal line represents Q mean at each station. The solid horizontal grey lines in each hydrogram mark the extreme Q peaks (mean discharge plus 5 times the standard deviation), while the blue bars indicate the number of times when Q exceeded it.
