We can’t let the Colorado River run dry When I worked at The Nature Conservancy, the Colorado River was always on our radar. It’s a marvel of engineering and ecology—a key artery that feeds cities, farms, and canyons across seven states and two countries. At the time, we watched with real concern as the river was overdrawn. Its reservoirs shrank, and the outlook grew dire. But what’s happening now is different. This isn’t a warning anymore. This is the thing we warned about.