River Mapocho

I think about the Rivr Mapocho es a very bad face of Santiago, but I belive in a few variable of change.

* River Mapocho navigable: I don't like the idea.

First it is necessary to avoid the urban renainders in the causes, soon to create green areas in its sorroundings, is the best solution than it is happened to me, because the regimen of the river is very complicated and the other solution are very expensive.