Idaho stocking report
Grasmere Reservoir
66 records Last stocked: October 2, 2025
The short answer
Grasmere Reservoir was last stocked on October 2, 2025: 4,480 Triploid Rainbow Trout (Catchable (6+ inches)).
Location map
Grasmere Reservoir location context
Grasmere ReservoirOwyhee County Marsing PondOwyhee County Owyhee RiverOwyhee County Crane Falls LakeOwyhee County Bybee ReservoirOwyhee County
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.
Agency records
Full stocking history
| Date | Species | Fish | Size |
|---|---|---|---|
| October 2, 2025 | Triploid Rainbow Trout | 4,480 | Catchable (6+ inches) |
| October 2, 2025 | Triploid Rainbow Trout | 9,557 | Catchable (6+ inches) |
| October 1, 2025 | Triploid Rainbow Trout | 10,350 | Catchable (6+ inches) |
| October 1, 2025 | Triploid Rainbow Trout | 6,183 | Catchable (6+ inches) |
| October 4, 2024 | Cutthroat Trout - Lahontan | 19,936 | Fingerling (3-6 inches) |
| October 6, 2023 | Cutthroat Trout - Lahontan | 20,040 | Fingerling (3-6 inches) |
| September 26, 2022 | Cutthroat Trout - Lahontan | 20,036 | Fingerling (3-6 inches) |
| September 28, 2021 | Cutthroat Trout - Lahontan | 26,112 | Fingerling (3-6 inches) |
| September 29, 2020 | Cutthroat Trout - Lahontan | 12,110 | Fingerling (3-6 inches) |
| September 29, 2020 | Cutthroat Trout - Lahontan | 16,130 | Fingerling (3-6 inches) |
| September 11, 2019 | Cutthroat Trout - Lahontan | 30,984 | Fry (0-3 inches) |
| September 25, 2018 | Cutthroat Trout - Lahontan | 10,596 | Fingerling (3-6 inches) |
| September 25, 2018 | Cutthroat Trout - Lahontan | 15,138 | Fingerling (3-6 inches) |
| September 21, 2017 | Cutthroat Trout - Lahontan | 10,183 | Fingerling (3-6 inches) |
| September 21, 2017 | Cutthroat Trout - Lahontan | 13,093 | Fingerling (3-6 inches) |
| September 29, 2016 | Triploid Rainbow Trout | 1,036 | Catchable (6+ inches) |
| September 23, 2013 | Cutthroat Trout - Lahontan | 29,827 | Fingerling (3-6 inches) |
| September 19, 2012 | Cutthroat Trout - Lahontan | 33,880 | Fingerling (3-6 inches) |
| September 22, 2010 | Cutthroat Trout - Lahontan | 24,898 | Fingerling (3-6 inches) |
| September 8, 2009 | Cutthroat Trout - Lahontan | 20,280 | Fry (0-3 inches) |
| June 25, 2008 | Cutthroat Trout - Lahontan | 49,236 | Fry (0-3 inches) |
| June 28, 2007 | Cutthroat Trout - Lahontan | 49,918 | Fry (0-3 inches) |
| June 13, 2006 | Cutthroat Trout - Lahontan | 20,868 | Fry (0-3 inches) |
| June 16, 2005 | Cutthroat Trout - Lahontan | 20,944 | Fry (0-3 inches) |
| June 16, 2004 | Cutthroat Trout - Lahontan | 28,000 | Fry (0-3 inches) |
| June 24, 2003 | Cutthroat Trout - Lahontan | 24,840 | Fry (0-3 inches) |
| June 25, 2002 | Cutthroat Trout - Lahontan | 24,600 | Fry (0-3 inches) |
| June 21, 2001 | Cutthroat Trout - Lahontan | 24,641 | Fry (0-3 inches) |
| June 13, 2000 | Cutthroat Trout - Lahontan | 25,185 | Fry (0-3 inches) |
| June 24, 1998 | Cutthroat Trout - Lahontan | 24,900 | Fry (0-3 inches) |
| June 19, 1997 | Cutthroat Trout - Lahontan | 15,460 | Fry (0-3 inches) |
| June 18, 1996 | Cutthroat Trout - Lahontan | 7,490 | Fry (0-3 inches) |
| June 27, 1995 | Cutthroat Trout - Lahontan | 7,475 | Fry (0-3 inches) |
| June 8, 1994 | Cutthroat Trout - Lahontan | 6,000 | Fry (0-3 inches) |
| June 29, 1993 | Cutthroat Trout - Lahontan | 13,075 | Fry (0-3 inches) |
| October 27, 1992 | Cutthroat Trout - Lahontan | 2,700 | Fingerling (3-6 inches) |
| November 19, 1991 | Cutthroat Trout - Lahontan | 3,120 | Fingerling (3-6 inches) |
| September 10, 1988 | Cutthroat Trout - Lahontan | 10,250 | Fingerling (3-6 inches) |
| April 17, 1986 | Rainbow Trout | 6,080 | Catchable (6+ inches) |
| May 21, 1985 | Rainbow Trout | 6,080 | Catchable (6+ inches) |
| May 26, 1983 | Rainbow Trout | 6,120 | Catchable (6+ inches) |
| May 28, 1982 | Rainbow Trout | 2,660 | Catchable (6+ inches) |
| May 28, 1982 | Rainbow Trout | 5,850 | Catchable (6+ inches) |
| March 25, 1981 | Rainbow Trout | 2,700 | Catchable (6+ inches) |
| April 30, 1980 | Rainbow Trout | 7,440 | Catchable (6+ inches) |
| June 29, 1979 | Rainbow Trout | 1,410 | Catchable (6+ inches) |
| May 3, 1979 | Rainbow Trout | 5,760 | Catchable (6+ inches) |
| May 19, 1978 | Rainbow Trout | 7,200 | Catchable (6+ inches) |
| June 1, 1976 | Rainbow Trout | 6,300 | Catchable (6+ inches) |
| May 21, 1976 | Rainbow Trout | 5,040 | Catchable (6+ inches) |
| June 25, 1975 | Rainbow Trout | 3,960 | Catchable (6+ inches) |
| May 28, 1975 | Rainbow Trout | 5,520 | Catchable (6+ inches) |
| May 22, 1974 | Rainbow Trout | 6,510 | Catchable (6+ inches) |
| April 6, 1973 | Rainbow Trout | 6,090 | Catchable (6+ inches) |
| March 19, 1973 | Rainbow Trout | 4,320 | Catchable (6+ inches) |
| March 16, 1972 | Rainbow Trout | 3,360 | Adults |
| March 15, 1972 | Rainbow Trout | 3,360 | Adults |
| May 12, 1971 | Rainbow Trout | 7,920 | Catchable (6+ inches) |
| April 29, 1971 | Rainbow Trout | 7,200 | Catchable (6+ inches) |
| April 14, 1971 | Rainbow Trout | 3,600 | Catchable (6+ inches) |
| July 8, 1970 | Rainbow Trout | 14,310 | Fry (0-3 inches) |
| June 11, 1970 | Rainbow Trout | 14,700 | Catchable (6+ inches) |
| May 16, 1969 | Rainbow Trout | 23,340 | Fry (0-3 inches) |
| May 14, 1969 | Rainbow Trout | 5,250 | Catchable (6+ inches) |
| May 5, 1969 | Rainbow Trout | 5,460 | Catchable (6+ inches) |
| May 24, 1968 | Rainbow Trout | 4,080 | Catchable (6+ inches) |
Records shown exactly as published by Idaho Department of Fish and Game. An event missing here does not mean the water was not stocked - some plants go unreported or are published elsewhere.
Data source: Idaho Department of Fish and Game. Last updated: .
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