A reader asks why Onion Creek is so named. We looked in the American-Statesman archives and asked area experts.

Arizona has taken the largest hit from Colorado River water shortages, and will take more, but Gov. Katie Hobbs said other ...

The mountains that feed the Colorado River with snowmelt are strikingly dry, with many ranges holding less than 50% of their ...

Rusty crayfish, an aquatic nuisance and an invasive species, has been discovered in a Larimer County river south of Estes Park, according to Colorado Parks and Wildlife. This is the first time the ...

The Colorado River makes up about half of San Diego County’s imported water supply. Now, California and the six other states that use the Colorado River are deadlocked about how to share it in ...

Environmental groups filed a petition calling on the Trump administration to strictly enforce a regulation that requires ‘beneficial’ use of Colorado River water. The measure, which could be ...

The forecast for spring-summer runoff in the Colorado River has taken a nosedive due to sharply decreased snowpack and total precipitation in April compared to earlier months. The federal forecast ...