A fishing guide asked whether the river water downstream of the underwater tower (officially known as the Selective Water Withdrawal tower) would become warmer or cooler when the fish passage system is operational. Here’s my answer:

 
 
 

Our April 28, 2008, blog entry described an experiment designed to see if feeding the young fry for 10 days before release increased their survival. To tell the two groups apart, Megan Hill, our lead studies biologist, experimentally marked the fed half with the chemical called “calcein.” The chemical is taken into bony parts of the small fish and shows up yellow under a special light. Read the rest of this entry »

 

In February 2008, biologists and volunteer released approximately 150,000 spring Chinook fry into the upper MetoliusRiver Basin. (See March 17, 2008, blog entry). The fish were released in small groups along the shoreline, in quiet areas with hiding cover, where small salmon fry normally rear. Read the rest of this entry »