Levels of cyanotoxins that were on the "high end of safe exposure levels" were observed at the mouth of Antelope Canyon in ...

If all of Lake Powell’s water were moved to Lake Mead today, the latter reservoir that supplies Las Vegas and generates more power than the Glen Canyon Dam, would still only be half full.

Lake Powell hasn't been this low since June of 1965, just two years after it began to fill with water. The biggest worry : If the lake’s level falls much lower, it won’t be possible to get ...

(Bethany Baker | The Salt Lake Tribune) Eric Balken, the executive director of the Glen Canyon Institute, points out various types of vegetation in Davis Gulch during a trip to Lake Powell near ...

A boat navigates through Lake Powell near Page, Ariz., on July 19. The bleached-white rock on the canyon walls, the so-called “bathtub ring,” show historic high-water marks for the reservoir ...

The concentration of cyanotoxins was found to be at the “high end of safe exposure levels” in the Antelope Canyon portion of ...

The National Park Service has detected the presence of cyanotoxins in the mouth of Antelope Canyon in Lake Powell in ...

Lake Powell and a downstream reservoir, Lake Mead, can store up to 53.9 million acre-feet of water, or about 92% of the reservoir storage capacity in the entire Colorado River Basin. The basin’s ...

SALT LAKE CITY (AP) — Two hikers were found dead after floodwaters poured into a slot canyon near the Utah-Arizona line. Their companion and 11 other hikers in the area were rescued by helicopter.

Now, as the San Juan River flows toward Lake Powell, it rambles over a huge pancake of mud that’s 49 miles long, a mile wide in some places, and as much as 120 feet deep in the final reaches of ...