
It may take a few years, but the cleaner and unobstructed nature of the Clark Fork could profoundly change how we view its use within the urban landscape. In the past the river was seen primarily as a vehicle for industry, either for transport or waste disposal. It's hard to imagine now, but a downtown butcher reportedly used to simply throw his leftover carcasses into the river and let them wash away. In recent years, probably through both a loss of industry in general and an enhanced environmental awareness, we are much more careful in how we use our rivers. After some restoration they could become again a wonderful place for humans to be, and they could provide that essential connection with nature even in the heart of the city.
Here's an example right near where I live: the Eastgate shopping center.

Now imagine if the Eastgate center kept its existing retail, but also opened up another strip of shops and restaurants or cafes along the river. A small nicely landscaped walkway could be extended out from the pedestrian bridge to serve these locations, and perhaps a terrace could be built with stairs down to the river to provide public access. Instead of wasting all of this valuable land with a single-story building, two or three more stories of residential units could be put on top. They would be very desirable places to live and provide more vibrancy and safety to the riverfront life. If this were legal in a zoning sense and I had a few million to throw around, I would be all over this. The time is right for a renewed waterfront.
Parks and recreation areas are a wonderful way to use the waterfront areas, but that can't be the only goal we pursue. urban areas can also make use of the clean natural amenity with dense, mixed-use, and publicly accessible development.