What species are stocked in Williamson Reservoir?

On record: Rainbow Trout, Largemouth Bass, Bluegill, Brook Trout. Source: Montana Fish, Wildlife & Parks.

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Montana stocking report

Williamson Reservoir

25 records Last reported: May 1, 2008

Last reported stocking

The latest reported stocking at Williamson Reservoir was on May 1, 2008: 2,520 Rainbow Trout (5.6000000000000005 in avg).

Record last checked: 2026-07-24. This is not a stocking date.

Browse stocking history

Source: Montana Fish, Wildlife & Parks.

A schedule is a plan, not confirmation that fish were released. Stocking records do not guarantee fish are still available.

No current or upcoming schedule is in this archive. Check the official report before choosing a trip date.

County: Chouteau
Species on record: Rainbow Trout, Largemouth Bass, Bluegill, Brook Trout
Records: 25 records
Official source: Montana Fish, Wildlife & Parks report

Location map

Williamson Reservoir location context

Agency coordinates · access unverified

Williamson ReservoirAgency coordinates Briggs PondAgency coordinates Eightmile SpringsAgency coordinates Leningtons ReservoirAgency coordinates Gasvoda ReservoirAgency coordinates

Pins appear only when the record includes coordinates; they are not verified access points. Shaded counties show area context only. Waters without coordinates stay in the list without a pin; confirm access and directions with the official agency source.

Before you go

Plan a trip to Williamson Reservoir

Check the latest report

Confirm dates and any changes in the official stocking report. Historical schedules are kept below even after their planned dates pass.

Check access and fishing rules

Use Montana's official fishing information to find current guidance. Confirm the exact water, public access, closures, and applicable fishing rules before leaving.

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The map gives location context. A shaded county is area context, not directions to a fishing spot or evidence of public access.

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Agency records

Stocking history

25 records from May 25, 1950 to May 1, 2008. Open a year to browse its records; scroll tables sideways for all columns. Scheduled means planned, even when the date has passed. Blank fields mean the source did not publish that detail.

2008 1 record

2008 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
May 1, 2008 reported	Rainbow Trout	2,520	5.6000000000000005 in avg	Creston National Fish Hatchery	Montana Fish, Wildlife & Parks

2007 1 record

2007 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
June 14, 2007 reported	Rainbow Trout	2,034	6.2 in avg	Creston National Fish Hatchery	Montana Fish, Wildlife & Parks

2006 1 record

2006 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
May 18, 2006 reported	Rainbow Trout	2,000	5.65 in avg	Creston National Fish Hatchery	Montana Fish, Wildlife & Parks

2005 1 record

2005 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
June 8, 2005 reported	Rainbow Trout	1,000	5.7 in avg	Creston National Fish Hatchery	Montana Fish, Wildlife & Parks

2004 1 record

2004 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
August 10, 2004 reported	Largemouth Bass	3,500	2 in avg	Miles City Fish Hatchery	Montana Fish, Wildlife & Parks

2002 1 record

2002 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
July 2, 2002 reported	Rainbow Trout	1,001	6.8 in avg	Creston National Fish Hatchery	Montana Fish, Wildlife & Parks

2001 1 record

2001 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
June 20, 2001 reported	Rainbow Trout	1,196	7.2 in avg	Creston National Fish Hatchery	Montana Fish, Wildlife & Parks

1997 1 record

1997 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
June 19, 1997 reported	Rainbow Trout	1,000	6.9 in avg	Creston National Fish Hatchery	Montana Fish, Wildlife & Parks

1996 1 record

1996 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
June 26, 1996 reported	Rainbow Trout	500	6 in avg	Creston National Fish Hatchery	Montana Fish, Wildlife & Parks

1995 1 record

1995 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
July 12, 1995 reported	Rainbow Trout	500	7 in avg	Creston National Fish Hatchery	Montana Fish, Wildlife & Parks

1994 1 record

1994 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
May 26, 1994 reported	Rainbow Trout	500	7 in avg	Creston National Fish Hatchery	Montana Fish, Wildlife & Parks

1993 1 record

1993 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
May 4, 1993 reported	Rainbow Trout	500	7 in avg	Creston National Fish Hatchery	Montana Fish, Wildlife & Parks

1992 1 record

1992 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
May 26, 1992 reported	Rainbow Trout	500	6.6000000000000005 in avg	Creston National Fish Hatchery	Montana Fish, Wildlife & Parks

1991 1 record

1991 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
June 11, 1991 reported	Rainbow Trout	500	6.4 in avg	Creston National Fish Hatchery	Montana Fish, Wildlife & Parks

1990 1 record

1990 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
April 24, 1990 reported	Rainbow Trout	500	7 in avg	Creston National Fish Hatchery	Montana Fish, Wildlife & Parks

1982 1 record

1982 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
May 25, 1982 reported	Rainbow Trout	5,000	2 in avg	Creston National Fish Hatchery	Montana Fish, Wildlife & Parks

1981 1 record

1981 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
May 19, 1981 reported	Rainbow Trout	5,000	5 in avg	Ennis National Fish Hatchery	Montana Fish, Wildlife & Parks

1980 1 record

1980 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
May 13, 1980 reported	Rainbow Trout	5,000	4 in avg	Ennis National Fish Hatchery	Montana Fish, Wildlife & Parks

1978 1 record

1978 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
July 6, 1978 reported	Rainbow Trout	5,000	3 in avg	Bozeman Fish Cultural Center	Montana Fish, Wildlife & Parks

1974 1 record

1974 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
May 1, 1974 reported	Rainbow Trout	2,062	4 in avg	Ennis National Fish Hatchery	Montana Fish, Wildlife & Parks

1971 2 records

1971 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
October 5, 1971 reported	Bluegill	2,500	1 in avg	Miles City - Federal	Montana Fish, Wildlife & Parks
July 28, 1971 reported	Largemouth Bass	5,000	2 in avg	Miles City - Federal	Montana Fish, Wildlife & Parks

1957 2 records

1957 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
October 8, 1957 reported	Largemouth Bass	4,200	3 in avg	Miles City - Federal	Montana Fish, Wildlife & Parks
October 8, 1957 reported	Bluegill	21,000	1 in avg	Miles City - Federal	Montana Fish, Wildlife & Parks

1950 1 record

1950 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
May 25, 1950 reported	Brook Trout	7,200	3 in avg	Giant Springs Trout Hatchery	Montana Fish, Wildlife & Parks

Records retain the dates, quantities, and status supplied by the linked agencies. An event missing here does not mean the water was not stocked - some plants go unreported or are published elsewhere.

Grouped by county and sorted by latest record, not by driving distance. Confirm access for each water.

Data source: Montana Fish, Wildlife & Parks. A record for this water was last checked on 2026-07-24. This check date is not a stocking date.

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