Lake Mead, near Las Vegas, Nevada, taken last week. The “bathtub ring” records the water level less than a decade ago. Until recently, there was a “No Fishing” sign on the cantilevered pier. The road on the left was carved from what used to be lakebed. The triangle-shaped hill in the upper right is Pyramid Island, although it’s no longer an island. The protruding landform in the upper left is Saddle Island—also no longer an island. The water volume of the lake is down by more than half since 2000. The Southern Nevada Water Authority estimates that it will be significantly lower by July. The main reasons for this are declining snowmelt and increased water use for irrigated agriculture.

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