Based on the analysis of the measured results at monitoring sections in middle reaches in March,2009 and also the measured results at the lower reaches before flood season,by modification of the water level with discharge relation in typical sections,and check of the beach elevation and embankment,using Manning formula hydraulic factors,the flood carrying capacity in each river section of the middle and lower reaches of Weihe River were calculated.Besides,the water level~flow rate relationship method was us...