Geography

Colorado water quality regulators’ attempt to fast-track new rules shielding streams left unprotected by changes to the Clean Water Act was abandoned earlier this month after it failed to win support from lawmakers.

Should Colorado River water be used to grow alfalfa or subdivisions in the Phoenix metropolitan area?

A bill making it easier for stream-restoration projects to take place has been gutted after stakeholders couldn’t reach an agreement.

Vail Resorts Inc., one of the largest financial contributors to Colorado’s cloud seeding program, has dropped out this year, leaving a major hole in the program’s budget.

Unhoused Angelenos use the urban river as a source of sustenance, but a proposal to revitalize the waterway could push them out.

Population growth, agricultural withdrawals and climate change have badly diminished the river and threaten its future.

This page features aerial and ground-based photos of St. George, Utah and the Virgin River outside of Hurricane, Utah. St. George in a city in southwestern Utah on the Arizona...

As a changing climate renders streamflow predictions less accurate, water managers are turning to new technologies for a clearer picture of what’s happening in their basin’s snowpack.

Deep below Arizona sit large volumes of water that are less salty than the ocean, but not easily used. If it were all pumped to the surface and purified, this brackish groundwater would supply Arizona’s water needs for a century or more. Problem is, it can’t all be pumped.

This page features aerial images of Lake Mead and Hoover Dam, along the Colorado River near Las Vegas, Nevada. Lake Mead is the nation's largest reservoir by capacity, but its...