Nation’s Largest Reservoirs Are Drying Up

NY Times-  Lakes Powell and Mead, the nation’s largest reservoirs, are drying up, sending a Colorado River system that provides water and electricity for millions of people into a state of crisis with no end in sight.

Water levels in Lake Powell, along the Utah-Arizona border, fell to a record low on Saturday. Lake Mead, the larger of the two and farthest downstream on the Colorado River, dropped to its lowest recorded point a week earlier.

The combined reservoir system, an essential water source for cities and farms across Arizona, Nevada and Southern California, has not held so little water since 1957, before Lake Powell was filled. That was long before climate change brought three decades of drought, the worst dry spell for the Southwest in at least 1,200 years, scientists said.

Federal and state officials and communities across the region have taken emergency steps to try to head off catastrophe. They shifted water from a smaller reservoir to try to save Powell and have called for water conservation, though those requests are mostly voluntary so far.