DETERMINATION OF THE STAGE DISCHARGE CURVE USING HEC-RAS
Keywords:
Flood, Flood damage, HEC-RAS, Stage-discharge, RiverAbstract
Constant measurement of the river flow in normal condition is difficult and costly and in flood risk condition
it is perhaps impossible due to the measurement problems and probable risks. Therefore, in hydrometric stations through
continuous reading of the scale and finding the relationship between stage-discharge and the flow rate is obtained for the
times when the measurement is not done. Stage-discharge relationship is a kind of flow resistant equation which is used
to determine the flow rate when the hydraulic radius or depth, channel shape, slopes and bed material characteristics
are known. The present research was conducted to determine stage discharge relationship in the River at different
stages. First of all, the needed data were collected including cross sections, hydrological data, hydrometric stations data,
etc at the River. The models used in this research are HEC-RAS software which are important software in river
engineering sciences.
