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Stocked last season

Williamson Reservoir Fish Stocking

Montana · 1950 to 2008 on record

According to FWP records, Williamson Reservoir has 25 stocking records on file across 4 species. The most recent stocking season represented is 2008.

Williamson Reservoir stocking
Williamson Reservoir photo
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25
Stocking records
79,713
Fish reported stocked
4
Species
2008
Latest season

Stocking activity by season

23 seasons on record, most in the 1971 (2 records). Click a bar to jump to that season below.

1 records
2008 · 2,520 fish
1950
1957
1971
1974
1978
1980
1981
1982
1990
1991
1992
1993
1994
1995
1996
1997
2001
2002
2004
2005
2006
2007
2008

Stocking records per season (labelled by the season's end year). Montana's source reports by season, so records aren't broken out by month.

Most-stocked species

Rainbow Trout 19 records
Largemouth Bass 3 records
Bluegill 2 records
Brook Trout 1 record

Location

48.2413, -109.9414

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Stocking history

Values shown exactly as the agency reported them; species names are normalized for search.

SpeciesFish stockedSizePhase
Rainbow Trout 2,520 5.6 in Eagle Lake

A stocking record does not guarantee fish remain present or may legally be harvested. Check current Montana fishing regulations →

Quick facts

Latest season 2008
Most stocked Rainbow Trout
Species Rainbow Trout, Largemouth Bass, Bluegill, Brook Trout
Seasons on record 1950 – 2008
Fish reported 79,713
Coordinates 48.2413, -109.9414

Data source

Compiled from public records published by the Montana Fish, Wildlife & Parks. StockedSpots is independent and not affiliated with or endorsed by FWP.

Source: Montana Fish, Wildlife & Parks (FWP). Data last checked September 1, 2026.
View FWP source →

Nearby stocked waters

Frequently asked questions

FWP records show Williamson Reservoir stocked with Rainbow Trout, Largemouth Bass, Bluegill, Brook Trout.

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Every stocking record on StockedSpots is pulled directly from official state wildlife agency sources — you can see exactly where each state's data comes from on our data sources page. If a record looks wrong, or you'd like a page reviewed or removed, let us know and we'll look into it.

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