The Inland Waterways of the Netherlands web site includes information on each of the places featured in the book, as well as a section with route suggestions on the Dutch waterways. You can also find my latest updates to the 'Inland Waterways of the Netherlands' and the latest addition, my Dutch waterways blog.
The most recent update is shown above and you can find more by selecting from the 'Latest Updates' menu or using the 'Search' function. A complete list of updates to the book are available on the Updates page. Please do submit your own corrections or comments by using the Contact page.