Report on Rainbow Trout Population

Posted on: May 16th, 2016 by Leslie_Zucker

USGS fish sur­vey data from 2009–15 is now avail­able online. The fish sur­veys doc­u­ment­ed the recent decline and rebound of Rain­bow Trout pop­u­la­tions. Sev­en sites in the upper Eso­pus Creek were sur­veyed annu­al­ly since 2009 — three sites on the main stem of the Eso­pus Creek and four on major trib­u­taries near their con­flu­ences with the Eso­pus. Rel­a­tive­ly large num­bers of young-of-the-year Rain­bow Trout were observed at most sites in 2015. The cause of the decline observed from 2009–13, whether nat­ur­al vari­a­tion or due to changes in the sys­tem, remains unknown. AWSMP pro­vid­ed fund­ing for the annu­al fish sur­vey and report, avail­able at: