Heart Lake Fish Stocking
Montana · 1931–2025 on record
According to Montana fish & wildlife agency, Heart Lake was last stocked September 17, 2025 with Cutthroat Trout. Heart Lake has 38 stocking records on file, spanning 1931–2025, with about 1,044,181 fish stocked over that period.
When Heart Lake is stocked
Heart Lake is typically stocked in summer, most often in August — 10 stocking events in that peak month.
Nearby stocked waters
Other stocked waters near Heart Lake, freshest activity first.
Cottonwood Lake, Middle
2 mi2 species · 38 records
Last stocked October 2025
Placid Lake
8 mi6 species · 275 records
Last stocked October 2025
Seeley Lake
6 mi7 species · 536 records
Last stocked May 2024
Salmon Lake
7 mi5 species · 86 records
Last stocked May 2024
Lena Lake
6 mi3 species · 28 records
Last stocked October 2021
Tuppers Lake
7 mi3 species · 8 records
Last stocked June 2019
By species
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| September 17, 2025 | Cutthroat Trout | 300 | 2.23" | Montana fish & wildlife agency |
| September 30, 2024 | Golden Trout | 1,000 | 1.53" | Montana fish & wildlife agency |
| October 19, 2022 | Cutthroat Trout | 4,200 | 2.25" | Montana fish & wildlife agency |
| June 8, 2021 | Arctic Grayling | 4,500 | 1" | Montana fish & wildlife agency |
| July 31, 2019 | Cutthroat Trout | 300 | 1.93" | Montana fish & wildlife agency |
| September 12, 2017 | Golden Trout | 2,000 | 1.09" | Montana fish & wildlife agency |
| August 16, 2016 | Cutthroat Trout | 2,000 | 1.31" | Montana fish & wildlife agency |
| July 29, 2014 | Cutthroat Trout | 300 | 1.79" | Montana fish & wildlife agency |
Show 30 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| June 5, 2012 | Arctic Grayling | 4,000 | 1" | Montana fish & wildlife agency |
| September 12, 2011 | Golden Trout | 1,000 | 0.93" | Montana fish & wildlife agency |
| August 31, 2011 | Cutthroat Trout | 2,000 | 2.21" | Montana fish & wildlife agency |
| August 7, 2007 | Cutthroat Trout | 300 | 1.4" | Montana fish & wildlife agency |
| July 25, 2006 | Arctic Grayling | 5,680 | 0.6" | Montana fish & wildlife agency |
| July 25, 2006 | Cutthroat Trout | 2,000 | 1.83" | Montana fish & wildlife agency |
| July 25, 2006 | Golden Trout | 400 | 5.5" | Montana fish & wildlife agency |
| August 9, 2001 | Cutthroat Trout | 3,000 | 1.7" | Montana fish & wildlife agency |
| August 2, 2000 | Cutthroat Trout | 375 | 1.6" | Montana fish & wildlife agency |
| August 30, 1996 | Cutthroat Trout | 3,600 | 1.8" | Montana fish & wildlife agency |
| July 10, 1989 | Arctic Grayling | 20,000 | 0.1" | Montana fish & wildlife agency |
| September 27, 1988 | Cutthroat Trout | 4,987 | 1.6" | Montana fish & wildlife agency |
| August 11, 1977 | Rainbow Trout | 1,000 | 5" | Montana fish & wildlife agency |
| June 2, 1965 | Arctic Grayling | 12,000 | 0 | Montana fish & wildlife agency |
| June 5, 1964 | Arctic Grayling | 20,000 | 0 | Montana fish & wildlife agency |
| September 4, 1963 | Golden Trout | 4,420 | 1" | Montana fish & wildlife agency |
| June 1, 1962 | Arctic Grayling | 10,000 | 0 | Montana fish & wildlife agency |
| June 30, 1960 | Arctic Grayling | 10,000 | 1" | Montana fish & wildlife agency |
| August 27, 1952 | Cutthroat Trout | 6,240 | 1" | Montana fish & wildlife agency |
| August 15, 1952 | Cutthroat Trout | 6,864 | 1" | Montana fish & wildlife agency |
| September 21, 1950 | Cutthroat Trout | 3,600 | 1" | Montana fish & wildlife agency |
| August 20, 1948 | Cutthroat Trout | 16,000 | 2" | Montana fish & wildlife agency |
| September 12, 1943 | Cutthroat Trout | 8,000 | 2" | Montana fish & wildlife agency |
| September 11, 1942 | Cutthroat Trout | 8,000 | 2" | Montana fish & wildlife agency |
| July 15, 1942 | Brown Trout | 7,615 | 0 | Montana fish & wildlife agency |
| October 8, 1937 | Rainbow Trout | 10,000 | 0 | Montana fish & wildlife agency |
| June 2, 1934 | Arctic Grayling | 97,500 | 0 | Montana fish & wildlife agency |
| June 28, 1932 | Arctic Grayling | 450,000 | 0 | Montana fish & wildlife agency |
| June 23, 1932 | Arctic Grayling | 275,000 | 0 | Montana fish & wildlife agency |
| September 2, 1931 | Cutthroat Trout | 36,000 | 2" | Montana fish & wildlife agency |
Frequently asked
When was Heart Lake last stocked?
According to Montana fish & wildlife agency, Heart Lake was last stocked September 17, 2025 with Cutthroat Trout.
What fish species are stocked in Heart Lake?
Heart Lake is stocked with Cutthroat Trout, Golden Trout, Arctic Grayling, Rainbow Trout, and Brown Trout.
What time of year is Heart Lake stocked?
Heart Lake is typically stocked in summer, most often in August.
How often is Heart Lake stocked?
Heart Lake is stocked intermittently — 38 recorded stockings between 1931 and 2025.
How many fish have been stocked in Heart Lake?
About 1,044,181 fish have been stocked in Heart Lake across 38 recorded events since 1931, per Montana fish & wildlife agency.
What size are the fish stocked in Heart Lake?
Fish stocked in Heart Lake average about 1.7 inches, based on the sizes the agency reported.