water

Melissa Sevigny

A new paper published today in Science shows a rising risk of water shortages in the Colorado River Basin. Scientists say diminishing snowpack from climate change plays a critical role—not just because snow supplies the river with water, but because it acts as a protective shield against evaporation. KNAU’s Melissa Sevigny spoke with lead author Chris Milly of the U.S. Geological Survey.

Melissa Sevigny: Your study was about what’s going to happen to the Colorado River as the world continues to get warmer. What did you find out?

U.S. EPA

Officials with the Navajo Nation and federal government finalized an agreement last week in the ongoing effort to clean up hundreds of abandoned uranium mines on the reservation. KNAU’s Ryan Heinsius reports.


agriculture.arizona.gov

The agriculture industry is pushing back against efforts in Arizona to track the amount of water being drawn from large groundwater wells in rural areas.

Ryan Heinsius / KNAU

The Tusayan Town Council for the second time in recent years has submitted a road and utility easement plan to the Kaibab National Forest. If approved, the draft proposal could eventually open the door for a large development project near Grand Canyon National Park. KNAU’s Ryan Heinsius reports.


Coconino National Forest

The Clean Water Act no longer applies to ephemeral streams which do not flow year round, due to a new rule from the Trump administration. KNAU’s Melissa Sevigny reports on what that means for Arizona.

The Arizona Department of Environmental Quality estimates about 90 percent of the state’s waterways no longer have federal protection.

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