I'd like to give this book a higher rating, but I can't. Great subject, should be brought to the attention of everyone even vaguely interested in the forces that shape our landscapes, and a fascinating account of the Bretz "saga". Like Wegener, Bretz was ridiculed in his time for his outlandish theories; unlike Wegener, he lived long enough to see his theories dramatically confirmed. On a recent trip to the US I had the opportunity to drive across WA, ID, and MT, and was entranced by the coulees, Dry Falls, the scablands, and the stranded lake shores above Missoula.
So what's my gripe? Simply that, while the authors have done a commendable job of making the whole story accessible to lay readers, they haven't really done their subject the treatment it so richly deserves. The writing (shared by three authors) is uneven, tends to be repetitious, and would have benefited from tighter editing. The chapters describing Bretz and his battles with the geological establishment are the best and most readable; those describing the details of the post-flood geomorphology (sensibly ordered from Lake Missoula to the sea) are more ponderous. The photos are also a big disappointment - I would happily have paid extra for a book with up to date and well-produced colour photos, rather than the grainy monochromes which have been used throughout. Buy the book, marvel at the story, and imagine what it would have been like to watch the floods from a secure piece of high ground, but keep your eyes open for the day when the authors (or someone else) produce a livelier and more readable update.