Stocked

FMZ 18 · Miller · Bancroft District

Grindstone Lake

Grindstone Lake (FMZ 18) was last stocked in 2025 with 8,000 Rainbow Trout yearlings.

Records here go back to 1946: 84 stocking events in total.

In the sweet spot

Rainbow Trout stocked here in 2021–2023 should be a good size now. See other rainbow trout lakes in Zone 18 worth fishing.

Fish stocked per yearShaded years 2021–2023: those fish should be catchable size now
2016: 8,000 Rainbow Trout8.0k20162017: 10,100 Rainbow Trout10k20172018: 9,400 Rainbow Trout9.4k20182019: 8,000 Rainbow Trout8.0k20192020: 8,000 Rainbow Trout8.0k20202021: 8,000 Rainbow Trout8.0k20212022: 8,000 Rainbow Trout8.0k20222023: 6,920 Rainbow Trout6.9k20232024: 9,500 Rainbow Trout9.5k20242025: 8,000 Rainbow Trout8.0k20252026
  • Rainbow Trout

By species

  • Rainbow TroutIn the sweet spot
    Last stocked
    2025
    Stocked 2021–2023
    22,920
    Last 10 yrs
    75,920

    Significant stockings 3–5 years ago. Those fish should be a good size now.

  • SplakeHistorical only
    Last stocked
    2014
    Stocked 2021–2023
    0
    Last 10 yrs
    0

    No stockings in the last ten years of data.

  • Lake TroutHistorical only
    Last stocked
    1970
    Stocked 2021–2023
    0
    Last 10 yrs
    0

    No stockings in the last ten years of data.

  • Brook TroutHistorical only
    Last stocked
    1961
    Stocked 2021–2023
    0
    Last 10 yrs
    0

    No stockings in the last ten years of data.

Stocking history

YearSpeciesStageFishNotes
2025Rainbow Troutyearlings8,000
2024Rainbow Troutyearlings9,500
2023Rainbow Troutyearlings6,920
2022Rainbow Troutyearlings8,000
2021Rainbow Troutyearlings8,000
2020Rainbow Troutyearlings8,000
2019Rainbow Troutyearlings8,000
2018Rainbow Troutyearlings9,400
2017Rainbow Troutyearlings10,100
2016Rainbow Troutyearlings8,000
Older records (74 stockings, 1946–2014)
DateSpeciesStageFishStrain / purpose
2014-05-20Splakeyearlings6,500F1 Splake · Put-Grow-and Take
2012-05-04Splakeyearlings6,500F1 Splake · Put-Grow-and Take
2010-06-09Splakeyearlings3,000F1 Splake · Put-Grow-and Take
2010-05-17Splakeyearlings6,500F1 Splake · Put-Grow-and Take
2008-05-15Splakeyearlings5,109F1 Splake · Put-Grow-and Take
2008-05-13Splakeyearlings2,591F1 Splake · Put-Grow-and Take
2006-06-07Splakeyearlings900F1 Splake · Put-Grow-and Take
2006-05-16Splakeyearlings7,700F1 Splake · Put-Grow-and Take
2004-10-14Splakeyearlings8,500F1 Splake · Put-Grow-and Take
2004-05-18Splakeyearlings7,000F1 Splake · Put-Grow-and Take
2003-06-05Splakeyearlings2,917F1 Splake · Put-Grow-and Take
2003-05-14Splakeyearlings7,000F1 Splake · Put-Grow-and Take
2002-05-06Splakeyearlings7,000F1 Splake · Put-Grow-and Take
2001-06-04Splakeyearlings7,000F1 Splake · Put-Grow-and Take
2000-05-17Splakeyearlings7,000F1 Splake · Put-Grow-and Take
1999-05-25Splakeyearlings7,000F1 Splake · Put-Grow-and Take
1998-05-21Splakeyearlings7,000F1 Splake · Put-Grow-and Take
1997-06-11Splakeyearlings8,644F1 Splake · Put-Grow-and Take
1996-05-24Splakeyearlings7,000F1 Splake · Put-Grow-and Take
1995-05-11Splakeyearlings7,000F1 Splake · Put-Grow-and Take
1994-05-10Splakeyearlings7,000F1 Splake · Put-Grow-and Take
1993-06-04Splakeyearlings3,000F1 Splake · Put-Grow-and Take
1993-05-14Splakeyearlings4,350F1 Splake · Put-Grow-and Take
1992-05-15Splakeyearlings3,500F1 Splake · Put-Grow-and Take
1991-05-15Splakeyearlings3,600Put-Grow-and Take
1990-05-10Splakeyearlings3,786Put-Grow-and Take
1989-05-19Splakeyearlings2,500Put-Grow-and Take
1989-05-15Splakeyearlings3,000Put-Grow-and Take
1988-05-09Splakeyearlings3,000Put-Grow-and Take
1987-05-12Splakeyearlings1,000Put-Grow-and Take
1987-05-08Splakeyearlings3,000Put-Grow-and Take
1986-05-20Splakeyearlings2,000Put-Grow-and Take
1986-04-23Splakeyearlings4,000Put-Grow-and Take
1986-04-23Splakeyearlings4,000Put-Grow-and Take
1985-05-09Splakeyearlings3,483Put-Grow-and Take
1984-05-14Splakeyearlings4,000Put-Grow-and Take
1970-05-01Lake Troutyearlings350
1968-11-01Rainbow Troutfingerlings2,000
1968-05-01Lake Troutyearlings1,200
1968-04-01Rainbow Troutyearlings2,000
1967-04-01Lake Troutfingerlings1,200
1966-04-01Lake Troutyearlings1,500
1965-05-01Rainbow Troutyearlings1,666
1965-01-01Lake Troutyearlings1,000
1964-05-01Rainbow Troutyearlings4,000
1963-04-01Lake Troutyearlings1,000
1963-04-01Rainbow Troutyearlings1,000
1962-05-01Rainbow Troutyearlings1,000
1962-05-01Lake Troutyearlings1,000
1961-05-01Brook Troutyearlings2,000
1961-05-01Lake Troutfry1,500
1959-05-01Brook Troutyearlings2,000
1959-05-01Lake Troutfry2,000
1959-04-01Rainbow Troutyearlings1,000
1958-07-01Lake Troutfingerlings2,000
1958-05-01Brook Troutyearlings2,000
1956-05-01Brook Troutfingerlings6,000
1956-05-01Rainbow Troutyearlings800
1955-05-01Rainbow Troutyearlings1,000
1955-04-01Brook Troutyearlings1,500
1955-04-01Lake Troutyearlings1,000
1954-05-01Brook Troutyearlings1,500
1954-05-01Lake Troutyearlings900
1953-06-01Lake Troutfingerlings5,000
1953-04-01Brook Troutyearlings2,000
1952-08-01Lake Troutfingerlings1,000
1952-05-01Brook Troutyearlings2,000
1951-09-01Lake Troutfingerlings1,000
1951-05-01Brook Troutyearlings1,000
1950-09-01Lake Troutfingerlings1,000
1949-06-01Lake Troutfingerlings5,000
1948-07-01Lake Troutfingerlings2,000
1947-09-01Lake Troutfingerlings1,000
1946-07-01Lake Troutfingerlings850

Recent records (2016 on) are year-only; MNRF does not publish stocking dates. Historical records (to 2015) include dates and strain.

Where it is

45.0137, -76.9535 · Open in OpenStreetMap