Mila - nice to see an architectural/urban design solution that also deals with issues of rain water mitigation. This, to me, really shows how design (in its original, physical sense) can actually change how we perceive and utilize a space. I would make sure that lighting is an important aspect of how this pans out - as it would, in my opinion, help to create a sense of safe passage. I also like the idea that this could be easily replicated over and over in a variety of areas. Do you think that this project also has a "landscape design" aspect to it? Is there an aspect of vegetation that would also be useful for you? (in terms of flooding and permeability, maybe also in a more symbolic sense? I'm not sure myself, just thinking and typing ;) I hope to see your idea in images soon, well done.