Dropping water levels in Lake Mead, behind Hoover Dam. (Source: Peter Gleick 2013) Dropping water levels in Lake Mead, behind Hoover Dam. (Source: Peter Gleick 2013)

It is no surprise, of course, that the western United States is dry. The entire history of the West can be told (and has been, in great books like Cadillac Desert [Reisner] and Rivers of Empire [Worster] and The Great Thirst [Hundley]) in large part through the story of the hydrology of the West, the role of the federal and state governments in developing water infrastructure, the evidence of droughts and floods on the land, and the politics of water allocations and use.

But the story of water in the West is also being told, every day, in the growing crisis facing communities, watersheds, ecosystems, and economies. This isn’t a crisis of for tomorrow. It is a crisis today. What is, perhaps, a surprise, is that it has taken this long for the entire crazy quilt of western water management and use to finally unravel. But it is now unraveling.

The old adage of the blind men describing an elephant based on their experience touching different parts of it applies to western water. In the past few years, we’ve seen bits and pieces of the puzzle: a well, and then two wells, and then a town goes dry. A farmer has to shift from water-intensive crops to something else, or let land go fallow. Vast man-made reservoirs start to go dry. Groundwater levels plummet, yet the response is to try to drill new and deeper wells and pump harder, or build another dam, or move water from an ever-more-distant river basin. Competition between industry and farming increases. And politicians run back to old, tired, half-solutions rather than face up to the fact that we live in a changed and changing world.

Here are a few pieces of the puzzle that we had better start to put together into a coherent picture if we hope to change our direction.

These are just a few recent examples of the growing water-related dislocations in the western US. Writ large, the entire region is at risk. As long as we fail to address the real problems, real solutions will never be applied.

First, we must acknowledge that we've reached peak water in the American west. We have promised more water to users than nature provides. Until demand and supply are brought back into balance, groundwater levels will continue to drop and our rivers will continue to run dry, destroying natural ecosystems. Second, we must acknowledge that there are limits to new supply and that we must turn to the demand side of the problem. This means figuring out how to use water more efficiently and productively, and thinking about moving some water-intensive activities and products to more water-abundant regions. Maybe it is time to grow less rice, alfalfa, cotton, and pasture with flood irrigation. It is past time to retire the green lawn as an acceptable landscape option in arid climates. All toilets and washing machines should be water- and energy-efficient. Finally we have to stop assuming that the water available for future use is the same as in the past. Climate change ensures that it won’t be, but until politicians start to heed the warnings of climate scientists and the on-the-ground evidence of the current water situation, our water problems in the west, and elsewhere, will worsen.

Peter Gleick