LivewellMontana · Reservoir
Fort Peck Reservoir
Is the fish you caught here safe to eat? Below is every consumption advisory on file for Fort Peck Reservoir, by species and size, in plain English — plus what's legal to keep.
5 species with advisories · contaminants: Mercury, PFAS
What's safe to eat from Fort Peck Reservoir
Channel Catfish
| Size | Who | Guidance |
|---|---|---|
| 18–22" | Men, and women not of childbearing age | Limit to two meals per week due to elevated PFAS. |
| Women of childbearing age and children | For women of childbearing age and children: limit to one meal per week due to elevated PFAS. |
Source: official advisory· updated 2026-11-06
Chinook Salmon
| Size | Who | Guidance |
|---|---|---|
| 26–30" | Men, and women not of childbearing age | Limit to two meals per month due to elevated Mercury. |
| Women of childbearing age and children | For women of childbearing age and children: limit to one meal per month due to elevated Mercury. | |
| Over 30" | Men, and women not of childbearing age | Limit to two meals per month due to elevated Mercury. |
| Women of childbearing age and children | For women of childbearing age and children: limit to one meal per month due to elevated Mercury. |
Source: official advisory· updated 2026-11-06
Lake Trout
| Size | Who | Guidance |
|---|---|---|
| 22–26" | Men, and women not of childbearing age | Limit to two meals per month due to elevated Mercury. |
| Women of childbearing age and children | For women of childbearing age and children: limit to one meal per month due to elevated Mercury. | |
| 26–30" | Men, and women not of childbearing age | Limit to two meals per month due to elevated Mercury. |
| Women of childbearing age and children | For women of childbearing age and children: limit to one meal per month due to elevated Mercury. | |
| Over 30" | Men, and women not of childbearing age | Limit to one meal per month due to elevated Mercury. |
Source: official advisory· updated 2026-11-06
Northern Pike
| Size | Who | Guidance |
|---|---|---|
| 18–22" | Men, and women not of childbearing age | Limit to two meals per month due to elevated Mercury and PFAS. |
| Women of childbearing age and children | For women of childbearing age and children: limit to one meal per month due to elevated Mercury and PFAS. | |
| 22–26" | Men, and women not of childbearing age | Limit to two meals per month due to elevated Mercury and PFAS. |
| Women of childbearing age and children | For women of childbearing age and children: limit to one meal per month due to elevated Mercury and PFAS. | |
| 26–30" | Men, and women not of childbearing age | Limit to two meals per month due to elevated Mercury and PFAS. |
| Women of childbearing age and children | For women of childbearing age and children: limit to one meal per month due to elevated Mercury and PFAS. | |
| Over 30" | Men, and women not of childbearing age | Limit to one meal per month due to elevated Mercury and PFAS. |
Source: official advisory· updated 2026-11-06
Walleye
| Size | Who | Guidance |
|---|---|---|
| 10–14" | Men, and women not of childbearing age | Limit to two meals per month due to elevated Mercury and PFAS. |
| Women of childbearing age and children | For women of childbearing age and children: limit to one meal per month due to elevated Mercury and PFAS. | |
| 14–18" | Men, and women not of childbearing age | Limit to two meals per month due to elevated Mercury and PFAS. |
| Women of childbearing age and children | For women of childbearing age and children: limit to one meal per month due to elevated Mercury and PFAS. | |
| 18–22" | Men, and women not of childbearing age | Limit to two meals per month due to elevated Mercury and PFAS. |
| Women of childbearing age and children | For women of childbearing age and children: limit to one meal per month due to elevated Mercury and PFAS. | |
| 22–26" | Men, and women not of childbearing age | Limit to one meal per month due to elevated Mercury and PFAS. |
| 26–30" | Men, and women not of childbearing age | Limit to one meal per week due to elevated Mercury and PFAS. |
| Women of childbearing age and children | For women of childbearing age and children: limit to two meals per month due to elevated Mercury and PFAS. |
Source: official advisory· updated 2026-11-06
Is it legal to keep?
These are Montana's statewide limits — a water-specific rule may override them. Always verify the current regulations before keeping a fish.
| Species | Size | Daily limit | Open season | Keep season |
|---|---|---|---|---|
| Rainbow Trout | — | 5 | Year-round | Same as open |
| Brown Trout | — | 5 | Year-round | Same as open |
| Cutthroat Trout | — | 3 | Year-round | Same as open |
| Bull Trout | — | 0 | Year-round | Same as open |
| Brook Trout | — | 10 | Year-round | Same as open |
| Arctic Grayling | — | 0 | Year-round | Same as open |
| Mountain Whitefish | — | 20 | Year-round | Same as open |
| Walleye | — | 5 | Year-round | Same as open |
| Sauger | — | 5 | Year-round | Same as open |
| Northern Pike | — | 10 | Year-round | Same as open |
| Smallmouth Bass | — | 5 | Year-round | Same as open |
| Largemouth Bass | — | 5 | Year-round | Same as open |
| Lake Trout | — | 3 | Year-round | Same as open |
| Kokanee | — | 10 | Year-round | Same as open |
| Black Crappie | — | 15 | Year-round | Same as open |
| White Crappie | — | 15 | Year-round | Same as open |
| Yellow Perch | — | — | Year-round | Same as open |
| Bluegill | — | — | Year-round | Same as open |
| Burbot | — | 2 | Year-round | Same as open |
Official rules: Montana — Montana FWP standard-district default