Here is a quote out of a report I have read.

“The Columbia River Select Area Fishery Evaluation (SAFE) Project was initiated to provide salmonid fisheries for select or offstream areas of the lower Columbia River for public use with little or no negative biological impact to mainstem Columbia River fish runs.”

One problem they found was a high ratio of by catch per target fish with gill net testing in SAFE areas. Gillnets and by catch don’t mix unlike selective by catch that is set free and alive at a very high percentage rate.