Need rainfall data of the North Eastern states for the last 100 years

(Query received over email from Dr. Pranjit Kumar Sarma)

I would like to introduce myself as Dr. Pranjit Kumar Sarma, Program Head of GIS Program of Aaranyak, a society for biodiversity conservation in North East India.

I need the rainfall data of the North Eastern states for the last 100 years if it is available with India Water Portal. We need this data for assessment of soil erosion and also for climate change analysis using GIS. I will be grateful if we get the data and also assure that due acknowledgement will be given to India Water Portal.

Thanking you,