Flat Lake Fish Stocking
Montana · 1973–2025 on record
According to Montana fish & wildlife agency, Flat Lake was last stocked June 5, 2025 with Rainbow Trout. Flat Lake has 79 stocking records on file, spanning 1973–2025, with about 160,740 fish stocked over that period.
When Flat Lake is stocked
Flat Lake is typically stocked in spring, most often in May — 30 stocking events in that peak month.
Nearby stocked waters
Other stocked waters near Flat Lake, freshest activity first.
Fort Peck Trout Pond
4 mi1 species · 11 records
Last stocked October 2025
Home Run Pond
16 mi4 species · 85 records
Last stocked September 2025
Coe Campsite Pond #1
3 mi1 species · 62 records
Last stocked July 2020
Milk River
4 mi13 species · 325 records
Last stocked May 2014
Fort Peck Dredge Cuts
4 mi9 species · 77 records
Last stocked May 2013
Winter Harbor Pond
3 mi2 species · 7 records
Last stocked September 2009
By species
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| June 5, 2025 | Rainbow Trout | 1,000 | 7.03" | Montana fish & wildlife agency |
| June 27, 2024 | Rainbow Trout | 1,000 | 8.28" | Montana fish & wildlife agency |
| July 14, 2023 | Rainbow Trout | 1,055 | 6.7" | Montana fish & wildlife agency |
| May 24, 2022 | Rainbow Trout | 1,000 | 7.08" | Montana fish & wildlife agency |
| May 19, 2021 | Rainbow Trout | 1,000 | 6.83" | Montana fish & wildlife agency |
| May 26, 2020 | Rainbow Trout | 1,003 | 7.07" | Montana fish & wildlife agency |
| June 7, 2019 | Rainbow Trout | 1,000 | 7.33" | Montana fish & wildlife agency |
| June 13, 2018 | Rainbow Trout | 542 | 7.19" | Montana fish & wildlife agency |
Show 42 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| October 31, 2017 | Rainbow Trout | 2,000 | 1.04" | Montana fish & wildlife agency |
| June 1, 2017 | Rainbow Trout | 1,006 | 6.87" | Montana fish & wildlife agency |
| May 18, 2016 | Rainbow Trout | 504 | 7.32" | Montana fish & wildlife agency |
| May 18, 2016 | Rainbow Trout | 503 | 7.32" | Montana fish & wildlife agency |
| May 11, 2015 | Rainbow Trout | 1,007 | 7.58" | Montana fish & wildlife agency |
| May 27, 2014 | Rainbow Trout | 1,005 | 7.51" | Montana fish & wildlife agency |
| June 18, 2013 | Rainbow Trout | 1,000 | 6.69" | Montana fish & wildlife agency |
| May 21, 2012 | Rainbow Trout | 1,017 | 7.02" | Montana fish & wildlife agency |
| June 28, 2011 | Rainbow Trout | 1,000 | 7.4" | Montana fish & wildlife agency |
| September 27, 2010 | Rainbow Trout | 452 | 7.02" | Montana fish & wildlife agency |
| May 4, 2006 | Rainbow Trout | 2,035 | 6.96" | Montana fish & wildlife agency |
| June 3, 2004 | Rainbow Trout | 1 | 5.9" | Montana fish & wildlife agency |
| June 3, 2004 | Rainbow Trout | 1,947 | 7.5" | Montana fish & wildlife agency |
| April 28, 2003 | Rainbow Trout | 2,072 | 6.85" | Montana fish & wildlife agency |
| May 30, 2001 | Rainbow Trout | 2,000 | 7" | Montana fish & wildlife agency |
| May 3, 2000 | Rainbow Trout | 2,002 | 7" | Montana fish & wildlife agency |
| May 3, 1999 | Rainbow Trout | 1,998 | 7.7" | Montana fish & wildlife agency |
| April 30, 1998 | Rainbow Trout | 1,300 | 7.3" | Montana fish & wildlife agency |
| April 30, 1998 | Rainbow Trout | 952 | 7.5" | Montana fish & wildlife agency |
| July 7, 1997 | Rainbow Trout | 800 | 8.3" | Montana fish & wildlife agency |
| May 4, 1997 | Rainbow Trout | 3,009 | 7.3" | Montana fish & wildlife agency |
| July 2, 1996 | Rainbow Trout | 1,988 | 9.4" | Montana fish & wildlife agency |
| April 29, 1996 | Rainbow Trout | 3,150 | 7.2" | Montana fish & wildlife agency |
| July 5, 1995 | Rainbow Trout | 1,000 | 9.5" | Montana fish & wildlife agency |
| April 24, 1995 | Rainbow Trout | 1,512 | 7.9" | Montana fish & wildlife agency |
| June 28, 1994 | Rainbow Trout | 1,500 | 9.2" | Montana fish & wildlife agency |
| May 3, 1994 | Rainbow Trout | 1,496 | 8.1" | Montana fish & wildlife agency |
| October 5, 1993 | Rainbow Trout | 1,498 | 6" | Montana fish & wildlife agency |
| July 1, 1993 | Rainbow Trout | 1,000 | 9.6" | Montana fish & wildlife agency |
| May 3, 1993 | Rainbow Trout | 1,508 | 7.7" | Montana fish & wildlife agency |
| May 18, 1990 | Northern Pike | 9,000 | 1.5" | Montana fish & wildlife agency |
| May 10, 1990 | Rainbow Trout | 1,813 | 7.8" | Montana fish & wildlife agency |
| May 9, 1989 | Rainbow Trout | 2,496 | 7.5" | Montana fish & wildlife agency |
| May 5, 1988 | Rainbow Trout | 2,483 | 7.9" | Montana fish & wildlife agency |
| May 6, 1987 | Rainbow Trout | 2,592 | 7.5" | Montana fish & wildlife agency |
| June 3, 1986 | Rainbow Trout | 2,283 | 8" | Montana fish & wildlife agency |
| May 29, 1985 | Rainbow Trout | 3,228 | 5" | Montana fish & wildlife agency |
| May 29, 1985 | Rainbow Trout | 2,213 | 7" | Montana fish & wildlife agency |
| May 17, 1985 | Fathead Minnow | 6,000 | 2" | Montana fish & wildlife agency |
| September 13, 1984 | Rainbow Trout | 3,780 | 8" | Montana fish & wildlife agency |
| July 15, 1982 | Largemouth Bass | 4,000 | 2" | Montana fish & wildlife agency |
| May 13, 1982 | Rainbow Trout | 4,002 | 8" | Montana fish & wildlife agency |
Showing 50 of 79 stocking records.
Frequently asked
When was Flat Lake last stocked?
According to Montana fish & wildlife agency, Flat Lake was last stocked June 5, 2025 with Rainbow Trout.
What fish species are stocked in Flat Lake?
Flat Lake is stocked with Rainbow Trout, Northern Pike, Fathead Minnow, Largemouth Bass, and Walleye.
What time of year is Flat Lake stocked?
Flat Lake is typically stocked in spring, most often in May.
How often is Flat Lake stocked?
Flat Lake has been stocked about 1 times a year — 79 recorded stockings between 1973 and 2025.
How many fish have been stocked in Flat Lake?
About 160,740 fish have been stocked in Flat Lake across 79 recorded events since 1973, per Montana fish & wildlife agency.
What size are the fish stocked in Flat Lake?
Fish stocked in Flat Lake average about 7.9 inches, based on the sizes the agency reported.