This is cool (I met Jared a few months ago in San Diego).
"Jared Criscuolo and Kristian Gustavson are building a visual database of America’s most imperiled rivers and crowdsourcing their restoration online...Beginning in spring 2012, they’ll start with the Sacramento, San Joaquin, and Colorado rivers. After capturing the necessary footage, they’ll post 360-degree panoramic views of each river, from source to sea, online." Read more at Outside Magazine.
Here's the website. Fantastic application of technology, to let you virtually tour a river.
Donate $50 to the project and get a free subscription to Outside.