Stocked

Worth fishing now · Zone 20 (Lake Ontario)

Rainbow Trout lakes worth fishing in Zone 20

4 lakes in Zone 20 had significant rainbow trout stockings between 2021 and 2023. Ranked by yearling-equivalent fish stocked in that window.

  1. Credit River
    In the sweet spot
    169,981 fish · last 2025
  2. Humber River
    In the sweet spot
    98,081 fish · last 2025
  3. Lake Ontario
    In the sweet spot
    85,080 fish · last 2025
  4. Niagara River
    In the sweet spot
    37,007 fish · last 2025

"Fish" is the raw count stocked 2021–2023. Stocked fish do not all survive; treat this as relative, not a census.