Stocked

Fisheries Management Zones

Zone 20 (Lake Ontario)

6 lakes and rivers in Zone 20 were stocked in the last ten years of MNRF data, 1 of them in 2026. 6 are in the 3–5 year sweet spot right now.

Worth fishing now

Lakes with significant stockings 2021–2023. Pick a species for the full ranked list.

  1. Lake Ontario
    Fredericksburgh · Atlantic Salmon, Brown Trout, Chinook Salmon
    In the sweet spot
    last 2026
  2. Credit River
    Brook Trout, Brown Trout, Chinook Salmon
    In the sweet spot
    last 2025
  3. Humber River
    Brook Trout, Brown Trout, Chinook Salmon
    In the sweet spot
    last 2025
  4. Niagara River
    Rainbow Trout
    In the sweet spot
    last 2025
  5. Bowmanville Creek
    Darlington · Brown Trout, Chinook Salmon
    In the sweet spot
    last 2025
  6. Hamilton Harbour
    Chinook Salmon
    In the sweet spot
    last 2025

Species stocked in Zone 20

SpeciesLakesFish, 10 yrFish, 2026Sweet-spot lakes
Chinook Salmon53,630,74904
Brown Trout41,660,48302
Rainbow Trout41,469,57504
Coho Salmon1186,1100—
Lake Trout165,80201
Brook Trout238,48602
Atlantic Salmon17,2011411
Walleye11,5000—

Stocked in 2026 so far

Records that have appeared in MNRF data for 2026. MNRF publishes as required, so this list grows through the season.

LakeSpeciesStageFish
Lake OntarioAtlantic Salmonadults141

All stocked lakes in Zone 20

  1. Lake Ontario
    Fredericksburgh · Atlantic Salmon, Brown Trout, Chinook Salmon
    In the sweet spot
    last 2026
  2. Credit River
    Brook Trout, Brown Trout, Chinook Salmon
    In the sweet spot
    last 2025
  3. Humber River
    Brook Trout, Brown Trout, Chinook Salmon
    In the sweet spot
    last 2025
  4. Niagara River
    Rainbow Trout
    In the sweet spot
    last 2025
  5. Bowmanville Creek
    Darlington · Brown Trout, Chinook Salmon
    In the sweet spot
    last 2025
  6. Hamilton Harbour
    Chinook Salmon
    In the sweet spot
    last 2025