Query on monthly discharge of Ganges between 1950-2003

Looking for monthly discharge data of Ganges during the year 1950-2003


Ganges discharge data is difficult to find and more so is the case with monthly discharge data. I am working on a research project on Ganges basin and need monthly discharge data for Ganges during 1950-2003. If it is not available, then the discharge data for its subcatchments would also be useful. 

I can not find any database where such dataset can be found. Kindly help and please provide leads for this.


Tushar Agarwal