Glen Canyon Dam

Dave Heramimtschuk-USGS/Freshwater Illustrated

Several species of aquatic insects are mysteriously missing from the Colorado River in the Grand Canyon. Scientists now know that’s because dam managers rapidly change the river’s level to meet electricity demand.


Snowpack in the mountains that feeds the Colorado River is slightly above the long-term average this winter — welcome news in the drought-stricken Southwest.


But water and weather experts said Tuesday it's too early to predict how deep the snow will get or how much of it will make its way into the river and on to Lake Powell in Utah and Arizona, one of two major reservoirs on the Colorado.


U.S. Bureau of Reclamation

Federal officials have proposed a sweeping new plan to manage Glen Canyon Dam for the next two decades. They want to be more proactive in their efforts to restore fish and animal habitat as well as beaches that have degraded in the Grand Canyon since the dam became operational in the 1960s. Arizona Public Radio’s Ryan Heinsius reports.

US Department of Interior

The public comment period is open for a proposed pipeline that would carry water from Lake Powell to southern Utah.

Frank Talbott via AP

A massive slab of rock is threatening to come crashing down at the base of an Arizona dam.