Last night I went along to the Water of Leith Visitor Centre to the launch of Charles Everitt's photography book Water of Leith: Nature's Course. For the launch Charles gave a slideshow of highlights from the book and some other photos that aren't in the book. This was lovely, though the musical accompaniment was rather loud at times, which was a shame, specially as there were blackbirds singing beautifully outside the building! He also spoke about aspects of the book, including some of the challenges he faced taking some of the photos.
The book is available either as hardback or paperback. The book takes the reader through a year along the Water of Leith, season by season. There is very little text, which lets the photos speak for themselves. The photos feature wildlife and landscapes, many of the latter being taken from interesting viewpoints along the river.
Although there doesn't seem to be a facility to order it from Charles' website, I assume he can let you know how to order a copy if you contact him there. Or ask at the Water of Leith Centre. It's a self published book and probably not widely available!