Leonardo Da Vinci's Water Theory by L. Pfister, H.H. Savenije and F. Fenicia 

The August 2013 issue of Geoscientist carried a review of this book published by IAHS.

" ..... The book demonstrates nicely how science progresses through a combination of need and curiosity. Da Vinci’s life-long interest in water was triggered by knowledge of devastating floods, and a need to better protect cities and populations, leading to work on flood-control projects. But as an observer and artist, he was also fascinated with water and its power for its own sake, as in the book’s cover illustration of a storm.......... 

..... Of 13,000 pages of notes at his death, only half remain, and in dispersed collections. The authors must therefore be commended for their detective work in piecing together Da Vinci’s water theories in an informative and entertaining read."  
Excerpt from book review by Peter Easton (reproduced by permission).

The book, IAHS Special Publication 9, is available from the IAHS bookshop.