Montana stocking report
Heart Lake
The short answer
Heart Lake was last stocked on September 17, 2025: 300 Westslope Cutthroat Trout (2.23 in avg).
Location map
Heart Lake location context
Pins use the finest location published with the stocking record. County-level pins show area context, not an exact access point; confirm access and directions with the official agency source.
Looking for a different Heart Lake? Also on record: Heart Lake (Camas County, Idaho) · Heart Lake (Custer County, Idaho) · Heart Lake (Elmore County, Idaho) · Heart Lake (Lemhi County, Idaho) · Heart Lake (Shoshone County, Idaho)
Agency records
Full stocking history
| Date | Species | Fish | Size | Hatchery |
|---|---|---|---|---|
| September 17, 2025 | Westslope Cutthroat Trout | 300 | 2.23 in avg | Washoe Park Trout Hatchery |
| September 30, 2024 | Golden Trout | 1,000 | 1.53 in avg | Yellowstone River Trout Hatchery |
| October 19, 2022 | Westslope Cutthroat Trout | 4,200 | 2.25 in avg | Washoe Park Trout Hatchery |
| June 8, 2021 | Arctic Grayling | 4,500 | 1 in avg | Flathead Lake Salmon Hatchery |
| July 31, 2019 | Westslope Cutthroat Trout | 300 | 1.93 in avg | Washoe Park Trout Hatchery |
| September 12, 2017 | Golden Trout | 2,000 | 1.09 in avg | Yellowstone River Trout Hatchery |
| August 16, 2016 | Westslope Cutthroat Trout | 2,000 | 1.31 in avg | Washoe Park Trout Hatchery |
| July 29, 2014 | Westslope Cutthroat Trout | 300 | 1.79 in avg | Washoe Park Trout Hatchery |
| June 5, 2012 | Arctic Grayling | 4,000 | 1 in avg | Flathead Lake Salmon Hatchery |
| September 12, 2011 | Golden Trout | 1,000 | 0.93 in avg | Yellowstone River Trout Hatchery |
| August 31, 2011 | Westslope Cutthroat Trout | 2,000 | 2.21 in avg | Washoe Park Trout Hatchery |
| August 7, 2007 | Westslope Cutthroat Trout | 300 | 1.4000000000000001 in avg | Washoe Park Trout Hatchery |
| July 25, 2006 | Westslope Cutthroat Trout | 2,000 | 1.83 in avg | Washoe Park Trout Hatchery |
| July 25, 2006 | Golden Trout | 400 | 5.5 in avg | Yellowstone River Trout Hatchery |
| July 25, 2006 | Arctic Grayling | 5,680 | 0.6 in avg | Flathead Lake Salmon Hatchery |
| August 9, 2001 | Westslope Cutthroat Trout | 3,000 | 1.7 in avg | Washoe Park Trout Hatchery |
| August 2, 2000 | Westslope Cutthroat Trout | 375 | 1.6 in avg | Washoe Park Trout Hatchery |
| August 30, 1996 | Westslope Cutthroat Trout | 3,600 | 1.8 in avg | Washoe Park Trout Hatchery |
| July 10, 1989 | Arctic Grayling | 20,000 | 0.1 in avg | Flathead Lake Salmon Hatchery |
| September 27, 1988 | Westslope Cutthroat Trout | 4,987 | 1.6 in avg | Washoe Park Trout Hatchery |
| August 11, 1977 | Rainbow Trout | 1,000 | 5 in avg | Jocko River Trout Hatchery |
| June 2, 1965 | Arctic Grayling | 12,000 | Flathead Lake Salmon Hatchery | |
| June 5, 1964 | Arctic Grayling | 20,000 | Flathead Lake Salmon Hatchery | |
| September 4, 1963 | Golden Trout | 4,420 | 1 in avg | Flathead Lake Salmon Hatchery |
| June 1, 1962 | Arctic Grayling | 10,000 | Flathead Lake Salmon Hatchery | |
| June 30, 1960 | Arctic Grayling | 10,000 | 1 in avg | Flathead Lake Salmon Hatchery |
| August 27, 1952 | Cutthroat Trout | 6,240 | 1 in avg | Washoe Park Trout Hatchery |
| August 15, 1952 | Cutthroat Trout | 6,864 | 1 in avg | Washoe Park Trout Hatchery |
| September 21, 1950 | Cutthroat Trout | 3,600 | 1 in avg | Washoe Park Trout Hatchery |
| August 20, 1948 | Cutthroat Trout | 16,000 | 2 in avg | Ovando |
| September 12, 1943 | Cutthroat Trout | 8,000 | 2 in avg | Ovando |
| September 11, 1942 | Cutthroat Trout | 8,000 | 2 in avg | Ovando |
| July 15, 1942 | Brown Trout | 7,615 | Hamilton | |
| October 8, 1937 | Rainbow Trout | 10,000 | Washoe Park Trout Hatchery | |
| June 2, 1934 | Arctic Grayling | 97,500 | Washoe Park Trout Hatchery | |
| June 28, 1932 | Arctic Grayling | 450,000 | Washoe Park Trout Hatchery | |
| June 23, 1932 | Arctic Grayling | 275,000 | Washoe Park Trout Hatchery | |
| September 2, 1931 | Cutthroat Trout | 36,000 | 2 in avg | Unknown |
Records shown exactly as published by Montana Fish, Wildlife & Parks. An event missing here does not mean the water was not stocked - some plants go unreported or are published elsewhere.
Data source: Montana Fish, Wildlife & Parks. Last updated: .
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