Fire, Faults & Floods bring the processes that created this to life. It would be useful and handy enough as a guidebook for traveling to various places and interpreting them with short hikes and drives. However, it goes way beyond this, interesting enough to hold your attention as you turn each page, filling in more and more details and drawing them into a cohesive whole.
If you have money and interest left after this book, for a more historically-oriented story of Harlan Bretz, and additional local details, pick up a companion book "Cataclysms on the Columbia" by Allen, Burns, Sargent, and Sargent.