S. Barbetta, F. Melone, and T. Moramarco (Italy)
discharge hydrograph, unsteady flow,
streamflow measurements, rating curve.
An efficient method is proposed for reconstructing the
discharge hydrograph at a river section where only water
level is monitored and the discharge is recorded at another
upstream section. The method is based on the estimation
of two parameters linked to remotely observed discharge.
Without using a flood routing procedure and without need
of a rating curve at local site, it allows to relate the local
river stage with hydraulic condition at a remote upstream
section also when lateral inflows are significant.
Calibration and validation of the method are carried out
through its application to different flood events observed
in two equipped river reaches of the Upper Tiber basin in
Central Italy; each one is characterized by a significant
contributing drainage area. The shape characteristics of
the reconstructed discharge hydrographs are found similar
to those of the observed at the end section of each river
reach. A comparison between the Muskingum model and
the proposed method shows that the latter is more reliable
if a hypothetical rating curve must be given at the