Towards reliable hydrological model calibrations with river level measurements

Abstract

Streamflow prediction based on hydrological models generally requires model calibration using observed discharge derived from a rating curve that requires accurate, frequent and sustained measurements of the flow rate. However, the remoteness of many catchments increases the difficulties and costs of measuring discharge data in these areas. Even at gauging stations with some discharge measurements, the resulting relationship can still has high uncertainties, particularly for larger magnitude flows where discharge measurements are absent. In this study, methods to calibrate streamflow models using only the time series of stream level measurements, without converting it to discharge values, ar..