Fish

Grand Canyon National Park / Erin Whittaker

Low, steady releases of water from Glen Canyon Dam are taking place this spring and summer as an experiment to increase aquatic insects on the Colorado River. KNAU’s Melissa Sevigny reports, these “bug flows” benefit the river’s ecology and might even help anglers catch more fish.


Dan Sorensen / Western Rivers Conservancy

The Tonto National Forest has grown by 150 acres, thanks to the purchase of former ranchland near Payson along the East Verde River. KNAU’s Melissa Sevigny reports.

Melanie Fischer / USFWS

A new scientific report says the razorback sucker is on its way to recovery. The report recommends “downlisting” the Colorado River fish from endangered to threatened. KNAU’s Melissa Sevigny reports.

U.S. Bureau of Reclamation

A new study says endangered razorback suckers upstream of Lake Powell may struggle to migrate up the San Juan River to spawn. The fish are blocked by a waterfall that formed two decades ago when the river changed its course. KNAU’s Melissa Sevigny reports. 


U.S. Geological Survey

The Colorado River that runs through Grand Canyon National Park supplies water to nearly forty million people in the West. But longstanding programs to protect the river’s health are about to be defunded by the federal government. River managers say the result could be disastrous for the crown jewel of the national parks. KNAU’s Melissa Sevigny reports.


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