Idaho stocking report
Three Island Lake
21 records Last stocked: September 25, 2025
The short answer
Three Island Lake was last stocked on September 25, 2025: 499 Triploid Rainbow Trout (Fry (0-3 inches)).
Location map
Three Island Lake location context
Three Island LakeBoise County North Fork Boise RiverBoise County Middle Fork Payette RiverBoise County Lowman PondsBoise County Horseshoe Bend Mill PondBoise 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 |
|---|---|---|---|
| September 25, 2025 | Triploid Rainbow Trout | 499 | Fry (0-3 inches) |
| August 22, 2022 | Triploid Rainbow Trout | 500 | Fry (0-3 inches) |
| September 13, 2019 | Triploid Rainbow Trout | 500 | Fry (0-3 inches) |
| September 7, 2016 | Triploid Rainbow Trout | 500 | Fry (0-3 inches) |
| September 10, 2013 | Triploid Rainbow Trout | 500 | Fry (0-3 inches) |
| September 15, 2010 | Triploid Rainbow Trout | 500 | Fry (0-3 inches) |
| September 8, 2008 | Westslope Cutthroat Trout | 500 | Fry (0-3 inches) |
| August 29, 2004 | Westslope Cutthroat Trout | 500 | Fry (0-3 inches) |
| August 29, 2001 | Westslope Cutthroat Trout | 500 | Fry (0-3 inches) |
| August 2, 1998 | Westslope Cutthroat Trout | 500 | Fry (0-3 inches) |
| July 25, 1996 | Westslope Cutthroat Trout | 500 | Fry (0-3 inches) |
| August 19, 1994 | Westslope Cutthroat Trout | 500 | Fry (0-3 inches) |
| July 18, 1992 | Westslope Cutthroat Trout | 500 | Fry (0-3 inches) |
| August 17, 1990 | Westslope Cutthroat Trout | 500 | Fry (0-3 inches) |
| August 12, 1988 | Westslope Cutthroat Trout | 1,000 | Fry (0-3 inches) |
| August 9, 1984 | Westslope Cutthroat Trout | 992 | Fry (0-3 inches) |
| August 18, 1981 | Cutbow - Cutthroat x Rainbow Trout - Diploid | 1,000 | Fry (0-3 inches) |
| August 18, 1981 | Cutbow (Cutthroat × Rainbow Trout) | 1,000 | Fry (0-3 inches) |
| July 30, 1978 | Cutthroat Trout | 1,073 | Fry (0-3 inches) |
| September 3, 1975 | Cutthroat Trout | 1,400 | Fry (0-3 inches) |
| July 26, 1972 | Cutthroat Trout | 1,340 | Fry (0-3 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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