Lake Powell bounces back — but for how long?

Even with the reservoir’s gains last spring, hiking through Glen Canyon’s emerging tributary canyons is like walking through time. Spots that have only been exposed for a year look like muddy sediment wastelands with no vegetation or wildlife. Pressing further into the canyon, to areas exposed for two or three years, invasives like tamarisk and Russian thistle — more commonly known as tumbleweed — are the first to grow. But they don’t last.