In my time after graduation I have continued to work on some research with Prof. Bill Braham at PennDesign regarding calculating and visualizing the environmental accounting for the Delaware River Valley region. I have been asked to help visualize some of the data and calculations being done to provide not just a more palatable interpretation of the system but also to help possibly lay the foundation for a dynamic and interactive diagram. This method uses a Bi-directional hierarchical sankey diagram (more information, as well as links to the source code, can be found here), created by Neil Atkinson.
From a I have begun to slowly construct an interactive web-based version. So, this is purely in beta, and given the hectic nature of my summer, not sure how far I will be able to take this. More to come!