The Bellamy river seems like a great place for a naturalist to explore. Here is an adjacent wildlife reserve. http://www.wildlife.state.nh.us/Wildlife/WMAs/WMA_Bellamy_River.htm

Wikipedia describes the actual man made sights to see while floating down to river. http://en.wikipedia.org/wiki/Bellamy_River

Here is another description of the river http://www.clf.org/blog/new-hampshire/bellamy-river-a-hidden-gem-in-the-great-bay-estuary/

Gere is more on the river from someone who actually explored the river.   http://nh.usharbors.com/image-gallery/bellamy-river-hidden-gem-great-bay-estuary

Here is tidal information http://www.weatherforyou.com/reports/index.php?forecast=tides&place=bellamy%20river%20access%20wildlife%20preserve&state=nh&zipcode=

I have yet to kayak this river so there are no posts yet.