​Written in 2006, ​Fred Pearces's book "When the Rivers Run Dry", seems somewhat prophetic to those of us living in the Southwest United States. ​ The Colorado River, the lifeblood of the Southwest, is severely overused, and upstream demands means it no longer flows to the sea. With reduced river flows and diminished snow pack in the Rockies and Sierra Nevada mountains, water supplies in the Southwestern states are severely stretched. As 2015 news accounts describe, California has been in a drought for several years, and significant water restrictions have been issued statewide. But water issues reach well beyone just the Southwest United states. Many other regions are suffering similar impacts​, as Fred Pearce describes in his book​. ​

Locally, Southern California's Salton Sea, as well as Lake Mead and Lake Powell in the U.S. Southwest, are shrinking rapidly. On a more global scale, the ​Aral Sea in Asia, once the world's 4th largest lake, has all but disappeared. ​​​​​Southwest Bra​zil is undergoing a terrible drought​, as are parts of China, Australia, Spain, Syria, Iraq, Africa, etc. And as leaders have tried to solve the problems by damming rivers, creating man-made lakes, ​creating huge irrigation projects, matters seem to just be getting worse. Water is wasted​ through inadequate water infrastructure, groundwater aquifers are incapable of being replenished, wells are running dry world-wide, and what water which does reach groundwater sources often is so po​l​luted as to be useless for consumption or agriculture. Dams created to prevent flooding prove incapable of fulfilling their mission, resulting in devastation to towns, villages, and downstream population. We hear of some of these situations, over time, but the totality and impact of the problem ​often ​doesn't register​. But this book certainly drives the point home.

In addition to the various places around the world suffering from water shortages, ​Pearce describes numerous and well detailed examples of failed water infrastructure projects, increased pollution of fresh water supplies, and the folly of a number of gone-bad water resource improvement policies. ​As world population increases, water resources are being over used, and it only takes a few years of lower rainfall, lower snowpack in mountains, shrinking glaciers, or poor water management decisions to push regions into crisis. The beauty of the book is that the chapters are ​very short, ​examples are clear and ​to the point, and extremely easy to read. It's truly a book for the layman, easy to understand without being superficial.

​It may be an exaggeration to compare this book and its impact to Rachel Carson's "Silent Spring", but as Carson's book highlighted the problems of pesticides and DDT, kickstarting the environmental movement at the end of the 20th century, Pearce's book highlights water pollution and shortages as the defining crisis of the twenty-first century. Hopefully, this book and others like it will raise attention and resources to address the water crises around the world.

​When beginning the book, the examples make you feel that the earth can barely supply enough water for its current population​. But Pearce leaves us with some hopeful prospects for the future​. The good news is that ​water is the ultimate renewable resource. We never destroy water. We may mismanage it, pollute it, waste it, but sooner or later, it will return one day. The difficulty is in ensuring that the water we need will be there​,​ when and where we need it. Pearce shows where we mismanage water, and where we have the potential for doing better.​ ​The solution in most cases is not more and bigger engineering schemes, giant desert canals or megadams. These projects tend to be hugely expensive, and cause as many problems as the solve.​ ​

​Recreating flood plains, recovering ancient water delivery systems, ​selected dam removals, ​drip irrigation techniques, porous pavement initiatives in major cities, natural steps to refill aquifers, capturing monsoonal rains, ​rooftop rain capture, ​etc.​ are all effective tools to improve our precious water supplies. But of course, fixing the problem requires being AWARE of the problem, and "When the Rivers Run Dry" brings the problems, along with some solutions (and a promise for more intelligent water usage in the future), to light. ( )

This is a frightening book. It is also an extremely well researched and well-written book.

We have a lot of knowledge. We have a lot of data, and yet we continue to do things that endanger our planet.

His case studies are presented without any emotion, yet they should arouse fear in all of us.

It is a book that is timely and should serve as a warning of what will happen to us when the rivers do indeed run dry ( )

This book takes a mad rush through the water stressed regions of the world, stopping briefly at each point on the tour for a short look at the water issues of the area. This extensive geographical area is actually a downside of the book; while the author manages to cover all (or most) of the crucial areas (South America seems a bit shorted, though he does give a very brief nod to the Atacama desert), most of them are covered superficially because of the sheer brevity of the treatment. He also is a bit inconsistent in terms of looking at the different things people are doing around the world to solve their problems. In one place, he will note the downside of the newer methods being considered or used; in other areas, he will praise the efforts to the skies without taking much time to ask what the long term effects will be. This seems to be related to the relative wealth or poverty of the region, with wealthy western countries given the skeptical treatment while lesser developed nations are assumed to be having no long term negative impact with their solutions. It's possible they aren't; but not probable. Also, in addressing solutions, he fails to look at the one problem that runs inexorably throughout the book, snaking its way unspoken through every paragraph...no, every line. At no time does he consider the fact that his own data point to the inconvenient truth that these problems are probably not soluable until we get the population under control. He does recognize the problem of large populations in the deserts of the southwestern US; but he ignores that issue in the large African and Asian deserts. Even in the US, he assumes the answer is simply to achieve more efficient use of the water, not to try and reduce the number of people relying on the limited water supplies. This lost the book at least a star. ( )

Fred Pearce is a reporter (for New Scientist, among others) and When The Rivers Run Dry is a reporter’s book (he visits places) rather than a work of theory, but he’s been following the subject for long enough to have a strong understanding of the issues. This is close to essential reading for anyone interested in the future of the planet.

Full review at ( )

Essential reading for anyone interested in the future of the planet.

Pearec is a reporter and this is a reporter's book (he visits places) rather than a work of theory, but he's been following the subject for long enough to have a strong understanding of the issues.

In three or four lines:
- we are a heavily water intensive society globally, which has passed the point of having enough water, on current patterns of usage, for everyone.
- engineering solutions (usually dams, reservoirs and canals) usually produce short term gains and serious long-term problems; and most reservoir schemes don't get close to meeting their promised energy and/or irrigation targets. Eventually, silt does for the river scheme and salt for the land.
- the traditional benefits of natural rivers systems (flooding, fertilisation etc) aren't well priced by planners and therefore are overlooked.
- the 'green revolution' has enabled us to feed most of our expanding global population but the water intensity has been high; agriculturalists are moving to a 'more crop per drop' model.
- the outlook is not good - already many areas are reverting to desert - but the most promising approaches involve simple local (and often traditional) solutions about harnessing and harvesting rainwater. ( )