St. Mary Lake Fish Stocking
Montana · 1952–2004 on record
According to Montana fish & wildlife agency, St. Mary Lake was last stocked June 8, 2004 with Cutthroat Trout. St. Mary Lake has 51 stocking records on file, spanning 1952–2004, with about 1,283,446 fish stocked over that period.
When St. Mary Lake is stocked
St. Mary Lake is typically stocked in summer, most often in June — 16 stocking events in that peak month.
Nearby stocked waters
Other stocked waters near St. Mary Lake, freshest activity first.
Duck Lake
11 mi7 species · 243 records
Last stocked May 2026
Pyramid Creek
22 mi1 species · 2 records
Last stocked August 2009
Goose Lake
14 mi3 species · 84 records
Last stocked September 2008
Upper Two Medicine Lake
16 mi3 species · 115 records
Last stocked May 2007
Lower Saint Mary Lake
8 mi1 species · 1 records
Last stocked May 2006
Flattop Lake
7 mi2 species · 8 records
Last stocked July 2003
By species
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| June 8, 2004 | Cutthroat Trout | 18,423 | 3.35" | Montana fish & wildlife agency |
| June 18, 2003 | Cutthroat Trout | 106,212 | 3.38" | Montana fish & wildlife agency |
| August 1, 2002 | Cutthroat Trout | 9,679 | 4.2" | Montana fish & wildlife agency |
| June 28, 2002 | Cutthroat Trout | 83,210 | 3.3" | Montana fish & wildlife agency |
| July 3, 1991 | Cutthroat Trout | 18,526 | 6" | Montana fish & wildlife agency |
| April 16, 1990 | Cutthroat Trout | 107,900 | 2.1" | Montana fish & wildlife agency |
| July 7, 1989 | Rainbow Trout | 536 | 15" | Montana fish & wildlife agency |
| June 28, 1989 | Cutthroat Trout | 29,460 | 3" | Montana fish & wildlife agency |
Show 42 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| June 7, 1989 | Cutthroat Trout | 19,955 | 3.5" | Montana fish & wildlife agency |
| June 7, 1989 | Cutthroat Trout | 19,955 | 3.5" | Montana fish & wildlife agency |
| November 3, 1988 | Lake Trout | 6,300 | 8.6" | Montana fish & wildlife agency |
| September 6, 1988 | Cutthroat Trout | 7,783 | 4.5" | Montana fish & wildlife agency |
| September 6, 1988 | Cutthroat Trout | 18,100 | 4.5" | Montana fish & wildlife agency |
| September 1, 1988 | Cutthroat Trout | 17,640 | 4" | Montana fish & wildlife agency |
| September 1, 1988 | Cutthroat Trout | 17,640 | 4" | Montana fish & wildlife agency |
| August 31, 1988 | Cutthroat Trout | 17,640 | 4" | Montana fish & wildlife agency |
| August 30, 1988 | Cutthroat Trout | 21,720 | 4" | Montana fish & wildlife agency |
| August 30, 1988 | Cutthroat Trout | 21,720 | 4" | Montana fish & wildlife agency |
| July 18, 1988 | Lake Trout | 25,200 | 4.1" | Montana fish & wildlife agency |
| July 18, 1988 | Lake Trout | 25,200 | 4.1" | Montana fish & wildlife agency |
| September 28, 1987 | Cutthroat Trout | 99,630 | 2.3" | Montana fish & wildlife agency |
| September 28, 1987 | Cutthroat Trout | 97,333 | 2.3" | Montana fish & wildlife agency |
| September 15, 1987 | Lake Trout | 17,922 | 4.4" | Montana fish & wildlife agency |
| September 15, 1987 | Lake Trout | 14,558 | 4.4" | Montana fish & wildlife agency |
| September 14, 1987 | Lake Trout | 18,850 | 4.4" | Montana fish & wildlife agency |
| September 14, 1987 | Lake Trout | 18,850 | 4.4" | Montana fish & wildlife agency |
| July 14, 1987 | Cutthroat Trout | 1,660 | 12.6" | Montana fish & wildlife agency |
| June 29, 1987 | Cutthroat Trout | 17,430 | 4" | Montana fish & wildlife agency |
| June 29, 1987 | Cutthroat Trout | 438 | 12.7" | Montana fish & wildlife agency |
| June 9, 1987 | Cutthroat Trout | 4,675 | 7.4" | Montana fish & wildlife agency |
| June 9, 1987 | Cutthroat Trout | 2,662 | 10" | Montana fish & wildlife agency |
| June 9, 1987 | Cutthroat Trout | 5,229 | 7.4" | Montana fish & wildlife agency |
| June 8, 1987 | Cutthroat Trout | 1,887 | 13.6" | Montana fish & wildlife agency |
| June 8, 1987 | Cutthroat Trout | 667 | 13.6" | Montana fish & wildlife agency |
| May 23, 1979 | Lake Whitefish | 125,000 | 1" | Montana fish & wildlife agency |
| July 1, 1977 | Rainbow Trout | 7,856 | 9" | Montana fish & wildlife agency |
| May 27, 1976 | Rainbow Trout | 19,516 | 7" | Montana fish & wildlife agency |
| October 4, 1973 | Lake Trout | 9,614 | 6" | Montana fish & wildlife agency |
| October 1, 1973 | Lake Trout | 7,000 | 6" | Montana fish & wildlife agency |
| October 27, 1969 | Rainbow Trout | 12,789 | 5" | Montana fish & wildlife agency |
| October 23, 1969 | Rainbow Trout | 14,599 | 5" | Montana fish & wildlife agency |
| October 20, 1969 | Rainbow Trout | 14,612 | 5" | Montana fish & wildlife agency |
| July 1, 1965 | Rainbow Trout | 34,054 | 7" | Montana fish & wildlife agency |
| June 29, 1965 | Rainbow Trout | 7,029 | 7" | Montana fish & wildlife agency |
| April 20, 1964 | Rainbow Trout | 48,012 | 7" | Montana fish & wildlife agency |
| October 15, 1963 | Lake Trout | 14,631 | 4" | Montana fish & wildlife agency |
| July 3, 1963 | Rainbow Trout | 22,654 | 6" | Montana fish & wildlife agency |
| June 26, 1963 | Rainbow Trout | 21,000 | 6" | Montana fish & wildlife agency |
| June 28, 1954 | Brook Trout | 2,790 | 6" | Montana fish & wildlife agency |
| September 5, 1952 | Lake Trout | 12,500 | 3" | Montana fish & wildlife agency |
Showing 50 of 51 stocking records.
Frequently asked
When was St. Mary Lake last stocked?
According to Montana fish & wildlife agency, St. Mary Lake was last stocked June 8, 2004 with Cutthroat Trout.
What fish species are stocked in St. Mary Lake?
St. Mary Lake is stocked with Cutthroat Trout, Rainbow Trout, Lake Trout, Lake Whitefish, and Brook Trout.
What time of year is St. Mary Lake stocked?
St. Mary Lake is typically stocked in summer, most often in June.
How often is St. Mary Lake stocked?
St. Mary Lake is stocked intermittently — 51 recorded stockings between 1952 and 2004.
How many fish have been stocked in St. Mary Lake?
About 1,283,446 fish have been stocked in St. Mary Lake across 51 recorded events since 1952, per Montana fish & wildlife agency.
What size are the fish stocked in St. Mary Lake?
Fish stocked in St. Mary Lake average about 5.7 inches, based on the sizes the agency reported.