Believe me, no one would like to see the Savoyard River uncovered than I! But unfortunately, the original /Savoyard became an open sewer somewhere in the 1800s, and was bricked in around that time. As Detroit grew, the land was more important than an open sewer. I was lucky enough to tour [[about 10 years ago) the bricked in version of Savoyard. It's still there, with an entrance around Congress and Washington. Still remarkable, but you'd have to disrupt Congress, Washington Blvd. and much of Jefferson to uncover it. Still an intriguing idea ...