Ironically I worked just up the road from the confluence of the Cold and Connecticut Rivers for most of 2005! I would have spent more time walking the banks with a camera had I known.
http://www2.nhpr.org/audio-graphics/audio/nht-2005-08-02-mb1.mp3
http://www2.nhpr.org/audio-graphics/audio/nht-2005-08-02-mb1.mp3