john wesley powell news | TucsonSentinel.com

Lake Powell, the huge reservoir that straddles the border of Arizona and Utah, has lost half of its water since 1999 because of drought and human water use. The drop in water levels is evidenced by the pale pink 'bathtub rings' along the canyon’s iconic sandstone walls.

Day of reckoning for parched Southwest

Feb 20, 2014 ◇ T.J. Lewan/Remapping Debate

When it comes to water in America, this truth is self-evident: We are guzzlers from sea to shining sea. Nowhere, though, are the effects of our thirst as visible and self-destructive as they are in the Southwest, the fastest-growing and driest region of the country, where just one long and lonely river, the Colorado, must slake the needs of seven states. Read more»