Bonanza Reservoir - stocking report
Bonanza Reservoir was last stocked on May 27, 2026: 507 Rainbow Trout (4.55 in avg).
Full stocking history
| Date | Species | Fish | Size | Hatchery |
|---|---|---|---|---|
| May 27, 2026 | Rainbow Trout | 507 | 4.55 in avg | Big Springs Trout Hatchery |
| June 4, 2025 | Rainbow Trout | 499 | 4.99 in avg | Big Springs Trout Hatchery |
| May 29, 2024 | Rainbow Trout | 503 | 4.51 in avg | Big Springs Trout Hatchery |
| June 1, 2023 | Rainbow Trout | 520 | 4.58 in avg | Big Springs Trout Hatchery |
| June 16, 2022 | Rainbow Trout | 507 | 4.69 in avg | Big Springs Trout Hatchery |
| June 11, 2021 | Rainbow Trout | 498 | 5.15 in avg | Big Springs Trout Hatchery |
| June 4, 2020 | Rainbow Trout | 498 | 4.2700000000000005 in avg | Big Springs Trout Hatchery |
| May 29, 2019 | Rainbow Trout | 507 | 4.5 in avg | Big Springs Trout Hatchery |
| June 6, 2018 | Rainbow Trout | 511 | 4.42 in avg | Big Springs Trout Hatchery |
| May 15, 2017 | Rainbow Trout | 526 | 3.56 in avg | Big Springs Trout Hatchery |
| June 8, 2016 | Rainbow Trout | 500 | 4.47 in avg | Big Springs Trout Hatchery |
| May 27, 2015 | Rainbow Trout | 500 | 4.2700000000000005 in avg | Big Springs Trout Hatchery |
| May 28, 2014 | Rainbow Trout | 514 | 4.12 in avg | Big Springs Trout Hatchery |
| June 7, 2012 | Rainbow Trout | 504 | 4.5200000000000005 in avg | Big Springs Trout Hatchery |
| June 16, 2011 | Rainbow Trout | 497 | 4.61 in avg | Big Springs Trout Hatchery |
| June 7, 2010 | Rainbow Trout | 500 | 4.24 in avg | Big Springs Trout Hatchery |
| June 3, 2009 | Rainbow Trout | 500 | 4 in avg | Big Springs Trout Hatchery |
| June 18, 2008 | Rainbow Trout | 496 | 4.93 in avg | Big Springs Trout Hatchery |
| June 11, 2007 | Rainbow Trout | 499 | 4.44 in avg | Big Springs Trout Hatchery |
| June 7, 2006 | Rainbow Trout | 548 | 4.04 in avg | Big Springs Trout Hatchery |
| May 25, 2005 | Rainbow Trout | 518 | 3.5100000000000002 in avg | Big Springs Trout Hatchery |
| June 7, 2004 | Rainbow Trout | 489 | 4.05 in avg | Big Springs Trout Hatchery |
| May 28, 2003 | Rainbow Trout | 497 | 3.69 in avg | Big Springs Trout Hatchery |
| June 5, 2002 | Rainbow Trout | 519 | 4.2 in avg | Big Springs Trout Hatchery |
| June 20, 2001 | Rainbow Trout | 515 | 4.3 in avg | Big Springs Trout Hatchery |
| June 8, 2000 | Rainbow Trout | 506 | 4.26 in avg | Big Springs Trout Hatchery |
| May 27, 1999 | Rainbow Trout | 529 | 4 in avg | Big Springs Trout Hatchery |
| June 3, 1998 | Rainbow Trout | 586 | 3.7 in avg | Big Springs Trout Hatchery |
| June 16, 1997 | Rainbow Trout | 549 | 4.2 in avg | Big Springs Trout Hatchery |
| June 12, 1996 | Rainbow Trout | 498 | 4.1 in avg | Giant Springs Trout Hatchery |
| June 2, 1995 | Rainbow Trout | 514 | 4.1 in avg | Big Springs Trout Hatchery |
| June 15, 1994 | Rainbow Trout | 525 | 4.2 in avg | Big Springs Trout Hatchery |
| June 14, 1993 | Rainbow Trout | 510 | 3.9 in avg | Big Springs Trout Hatchery |
| May 26, 1992 | Rainbow Trout | 511 | 3.9 in avg | Big Springs Trout Hatchery |
| June 11, 1991 | Rainbow Trout | 500 | 4.5 in avg | Big Springs Trout Hatchery |
| June 15, 1990 | Rainbow Trout | 522 | 4.4 in avg | Big Springs Trout Hatchery |
| June 6, 1989 | Rainbow Trout | 517 | 5.5 in avg | Big Springs Trout Hatchery |
| June 6, 1988 | Rainbow Trout | 500 | 4.8 in avg | Big Springs Trout Hatchery |
| June 4, 1987 | Rainbow Trout | 538 | 4.6000000000000005 in avg | Big Springs Trout Hatchery |
| June 18, 1986 | Rainbow Trout | 507 | 5 in avg | Big Springs Trout Hatchery |
| May 14, 1985 | Rainbow Trout | 514 | 4 in avg | Big Springs Trout Hatchery |
| June 8, 1984 | Rainbow Trout | 503 | 4 in avg | Big Springs Trout Hatchery |
| June 2, 1983 | Rainbow Trout | 522 | 4 in avg | Big Springs Trout Hatchery |
| June 23, 1981 | Rainbow Trout | 554 | 5 in avg | Big Springs Trout Hatchery |
| June 24, 1980 | Rainbow Trout | 504 | 6 in avg | Big Springs Trout Hatchery |
| July 3, 1979 | Rainbow Trout | 501 | 5 in avg | Big Springs Trout Hatchery |
| July 26, 1978 | Rainbow Trout | 506 | 6 in avg | Big Springs Trout Hatchery |
| June 2, 1977 | Rainbow Trout | 510 | 5 in avg | Big Springs Trout Hatchery |
| May 18, 1976 | Rainbow Trout | 532 | 4 in avg | Big Springs Trout Hatchery |
| June 11, 1974 | Rainbow Trout | 504 | 5 in avg | Big Springs Trout Hatchery |
| May 11, 1973 | Rainbow Trout | 644 | 2 in avg | Big Springs Trout Hatchery |
| May 17, 1972 | Rainbow Trout | 558 | 4 in avg | Big Springs Trout Hatchery |
| May 5, 1971 | Rainbow Trout | 1,008 | 4 in avg | Big Springs Trout Hatchery |
| June 24, 1970 | Rainbow Trout | 1,470 | 5 in avg | Big Springs Trout Hatchery |
| May 5, 1969 | Rainbow Trout | 2,100 | 4 in avg | Big Springs Trout Hatchery |
| May 2, 1968 | Rainbow Trout | 2,000 | 4 in avg | Big Springs Trout Hatchery |
| July 26, 1967 | Rainbow Trout | 1,980 | 5 in avg | Big Springs Trout Hatchery |
| June 22, 1965 | Rainbow Trout | 2,550 | 5 in avg | Big Springs Trout Hatchery |
| June 16, 1964 | Rainbow Trout | 2,600 | 4 in avg | Big Springs Trout Hatchery |
| April 27, 1962 | Rainbow Trout | 2,040 | 3 in avg | Big Springs Trout Hatchery |
| July 11, 1961 | Rainbow Trout | 3,200 | Big Springs Trout Hatchery | |
| May 26, 1961 | Rainbow Trout | 1,800 | Big Springs Trout Hatchery | |
| May 10, 1960 | Rainbow Trout | 3,100 | 4 in avg | Big Springs Trout Hatchery |
| April 28, 1959 | Rainbow Trout | 2,208 | Big Springs Trout Hatchery | |
| April 4, 1959 | Rainbow Trout | 2,475 | Big Springs Trout Hatchery | |
| July 7, 1958 | Rainbow Trout | 1,500 | Big Springs Trout Hatchery |
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: .