rain catching off living roofs

I'm interested in building with living roofs and also using excess runoff for water. Does anyone know of people who have done this and made it work?

Michael E.: Rob Roy has several books on the owner built home, cord wood construction and straw bail houses. I have been to his place here in
Extreme Upstate New York and I have seen that most of his buildings (built under his instruction by volunteers and paying students) have Living
Roofs ! You can contact him here at Permies ! Good luck!

For the good of the Craft ! be safe, keep warm ! PYRO Magically Big AL ! - As always your comments/questions are solicited and Welcome ! A. L.