You know me, if I'm not fishing I'm writing letters.
Write letters to the towns that boarder that river. Write letters to DEP, FG&W, get people involved and let them know what is going on.
It is happening on the Raritan, no reason it can't happen on the Passaic.
Judy Shaw is a great woman, you can e mail her and ask for pointers on how to get started. It is amazing what a few letters can do.
Take photos of the worst areas and post them on here.
http://www.raritan.rutgers.edu/