Idaho Fish Report

Navajo Lake was treated with rotenone in October 2021 to reduce a dense population of Utah chub that had been significantly impacting trout survival. A new management plan for Navajo Lake was developed during early 2022 with the help of local anglers and officials. The plan intends to provide fishing opportunities for both family and trophy fishing interests, while also addressing the issues of chub competition and overwinter survival. Fish species that will be stocked in the future include rainbow trout, tiger trout, splake trout, Arctic grayling and tiger muskie. We hope that multiple predators (tiger trout, splake trout and tiger muskie) will help prevent Utah chub from becoming too abundant. Arctic grayling generally show better overwinter survival in low-oxygen conditions and may compete with chub. Rainbow trout are intended to provide high catch rates, along with tiger trout and grayling. Splake, large tiger trout and tiger muskie should provide trophy fishing opportunities with lower catch rates.