THE completion, just announced, of the great concrete structure originally known as the Boulder ... River in Black Canyon, which forms the boundary between the States of Arizona and Nevada ...

According to a release, the closures include rock climbing spots at Eagle Rock, Blob Rock, Bitty Buttress and Security Risk ...

In Arizona, iconic destinations like the Grand Canyon and Lake Powell tend ... One of the most popular activities at the lake is hiking through the boulder-strewn landscape along the Watson ...

Arizona, unhappy with the proposed plan for water distribution, is the one state that held out against the Compact. The resulting agreement leads to passage of the Boulder Canyon Project Act.

Boulder County extends free Boulder Canyon Extra bus service until May 23, 2025, adding an extra weekday round-trip and ...