Upstream states on the Colorado River are investing in measurement technology, but experts say more data doesn't always mean ...

After you've admired the Grand Canyon from the hiking trails (or even from the air on a helicopter tour), enjoy a new vantage point on a Colorado River rafting tour. Options range from the family ...

What influence does the Colorado River have on resupplying Arizona’s groundwater shortage over the last few years? This is ...

The Grand Canyon Regional Intertribal Intergenerational Stewardship Expedition is now accepting applications for its fourth annual nine-day Colorado River rafting trip through the Grand Canyon, taking ...

The amount of snowmelt expected to reach the key reservoirs on the Colorado River this spring is far below the median of the last two decades, despite near-normal snowpack levels and heavy March ...