The applicability of the stage-fall-discharge (SFD) method in combination with acoustic
Doppler velocity meter (ADVM) data, upstream of a hydraulic structure, specifically, the Sejong-weir
located in the Geum River, Korea, was examined. We developed three rating curves: a conventional
simple rating curve with the data measured using an acoustic Doppler current profiler (ADCP) and
floating objects, an SFD rating curve with the data measured using the ADCP and floating objects,
and an SFD rating curve with the data measured using an ADVM. Because of the gate operation effect,
every rating curve involved many uncertainties under 1000 m3/s (3.13 m2/s, specific discharge). In
terms of the hydrograph reconstruction, compared with the conventional simple rating curve, the
SFD developed using ADVM data exhibited a higher agreement with the measured data in terms of
the pattern. Furthermore, the measured discharge over 1000 m3/s primarily ranged between 97.5%
and 2.5% in the graph comparing the ratio of the median and observed discharge. Based on this
experiment, it is confirmed that the SFD rating curve with data to represent the backwater effect,
such as ADVM data, can reduce the uncertainties induced by the typical rating curve