Total sediment discharge also includes bedload. But, no bedload
measurements are available for the study catchments. Further, high
resolution land surveys of channel beds and measurements of
reservoir fill rate are incomplete and cannot be used for a reliable
assessment of bedload in these catchments. However there have been
previous studies of the relative importance of bedload to suspended
load in Taiwanese rivers (Kao and Liu, 2001; Dadson et al., 2004), but
these demonstrate a range between 2% and 58%.