Prelim Numbers Show High Juvenile Steelhead Passage Survival In 2014; Modeling Methods Reviewed

Survival estimates for juvenile steelhead moving down through the Columbia-Snake river hydro system during the 2014 spring-summer outmigration were so high – nearly 10 percent higher than the next best in a data record that goes back to 1997 – that researchers from NOAA Fisheries’ Northwest Fisheries Science say they need to review their statistical modeling methods and assumptions.

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