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Arizona water chief warns of unintended consequences from draining Lake Powell amid Colorado River negotiations on future of vital water source.

"Such options should recognize and account for the early and consistent contributions that Arizona has made and will continue to make to preserve waterlevels in Lake Mead and Lake Powell." ...

As Lake Mead filled this summer with runoff from record ... was not geologically active until after completion of Hoover Dam on the Arizona-Nevada border. When the lake filled, the shaking began ...

Extreme heat significantly increased the chance of heat-related illnesses across three states in the U.S. Southwest on ...

And boaters still roar across Nevada and Arizona’s Lake Mead, 110 miles long and formed by the Hoover Dam. But at the lake’s edge they can see lines in the rock walls, distinct as bathtub ...

Lake Mead National Recreation Area sits just outside of Las Vegas on the border between Nevada and Arizona. Famous as the location of the Hoover Dam, Lake Mead is technically a reservoir filled by ...

The bridge, which is awaiting decking and with temporary pylons in September 2009, was built to bypass the part of U.S. Route 93 that crosses the Hoover Dam ... vastness of Lake Mead and still ...

LAS VEGAS (KLAS) – A high-profile Las Vegas-area veterinarian who disappeared in April died by suicide in a drowning at Lake Mead, the Clark County coroner’s office ruled Wednesday.

The research highlights the groundwater issues complicating the Colorado River's already strained water supply.