Volunteering for development projects along the Godavari river

I'll be visiting India for a six month period beginning early November.  This is my seventh visit, having previously assisted at a small Canadian NGO in South India.
I will be doing a pilgrimage along the Godvari River, and would like to know if there are any projects that you are aware of at a village level that I could be of assistance to, financially or with volunteer work.

William Desmond