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Fishing Fort Peck Lake: what the data says
245,000-acre reservoir near Fort Peck. 134 miles of wild Missouri Breaks water. Walleye, lake trout and chinook over a 47-species native river fishery. The lake tops out around 220 ft. These contours are modeled — built from the real shoreline and the water's maximum depth — so read them as a guide, never as navigation. Species by species, here's what the data says the year looks like.
Traced from the shoreline, Fort Peck Lake runs 205,784 acres with 970.6 miles of edge, with 18 islands in the mix. With a shoreline index of 15.3, this water is all arms and coves — edge habitat well beyond its acreage. About 55% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone.
Walleye fishing at Fort Peck Lake
Spring walleye on Fort Peck Lake hold shallow, usually 4 to 15 ft. They move out to 15 to 35 ft in summer and finish the year down in 20 to 40 ft. Put Creek inflow first on the milk run — a inflow / creek mouth near 8 ft that grades prime for spring. The feeding windows run the evening and early morning. The summer box starts with a crawler harness on bottom bouncer or a deep crankbait (trolled).
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Creek inflow (8 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 15 to 35 ft | dusk & dawn | Offshore hump (18 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 12 to 40 ft | dusk & night | Shoreline point (10 ft) | Jigging rap, Jig + big minnow |
| Winter | 20 to 40 ft | dusk & dawn | Offshore hump (37 ft) | Jigging spoon + minnow head, Rattle bait |
Northern Pike fishing at Fort Peck Lake
In spring, northern pike run shallow here, mostly 2 to 8 ft. Summer pushes them deeper, 8 to 20 ft, and winter fish settle into 5 to 15 ft. Shallow bay flat is the standout, a weed flat at roughly 6 ft, rated prime for spring northern pike. Time it for early morning and the evening. You won't need more than a bucktail or a weedless spoon over cabbage most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (6 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Shallow flat (7 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Shallow bay flat (6 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Shallow bay flat (6 ft) | Tip-ups, Large jigging spoon |
Sauger fishing at Fort Peck Lake
Come spring, look for sauger tight to the bank in 4 to 18 ft. They move out to 10 to 30 ft in summer and finish the year down in 15 to 45 ft. If you only fish one area, make it Creek inflow: a inflow / creek mouth around 8 ft that scores prime in spring. Best bite is early morning and the evening. A bottom bouncer + crawler or a 3-way rig with stickbait is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 18 ft | dawn & dusk | Creek inflow (8 ft) | 3/8 oz jig + ringworm, Hair jig + minnow |
| Summer | 10 to 30 ft | dawn & dusk | Offshore hump (18 ft) | Bottom bouncer + crawler, 3-way rig with stickbait |
| Fall | 12 to 35 ft | dusk & dawn | Offshore hump (18 ft) | Jig + big minnow, Blade bait |
| Winter | 15 to 45 ft | dusk | Deep basin (187 ft) | Heavy jigging spoon, Jig + minnow (vertical) |
Lake Trout fishing at Fort Peck Lake
The spring pattern is a shallow one: lake trout in 10 to 40 ft. As the season builds they drop to 50 to 120 ft, wintering in 20 to 80 ft. Top water on the chart: Offshore hump, a offshore hump in the 37-ft range, prime in winter. Time it for early morning. Summer baits: a white tube jig (deep) or a magnum spoon on downrigger gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Shoreline point (10 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 50 to 120 ft | dawn | Offshore hump (39 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Offshore hump (37 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | Offshore hump (37 ft) | White tube jig, Airplane jig |
Smallmouth Bass fishing at Fort Peck Lake
In spring, smallmouth bass run shallow here, mostly 3 to 12 ft. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 20 to 45 ft. Offshore hump is the standout, a offshore hump at roughly 18 ft, rated prime for summer smallmouth bass. Time it for early morning and the evening. You won't need more than a drop shot (goby/minnow) or a ned rig most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Shoreline point (9 ft) | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Offshore hump (18 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Shoreline point (9 ft) | Jerkbait, Blade bait |
| Winter | 20 to 45 ft | midday | Offshore hump (37 ft) | Blade bait, Hair jig |
Chinook Salmon fishing at Fort Peck Lake
Start shallow in spring: chinook salmon sit in 5 to 40 ft that time of year. Summer pushes them deeper, 50 to 120 ft, and winter fish settle into 30 to 90 ft. The spot to know is Creek inflow, a inflow / creek mouth in about 8 ft of water that rates prime for chinook salmon in spring. Warm-month bites cluster around early morning and the evening. Throw a flasher + fly (green/white) or a magnum spoon on downrigger until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 40 ft | dawn & dusk | Creek inflow (8 ft) | Trolled spoon (orange/gold), Stickbait off planer boards |
| Summer | 50 to 120 ft | dawn & dusk | Sharp break (130 ft) | Flasher + fly (green/white), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dawn & dusk | Creek inflow (8 ft) | J-plug (glow), Flasher + fly |
| Winter | 30 to 90 ft | midday | Deep basin (187 ft) | Small spoon on a slow troll, Stickbait deep |
Fort Peck Lake also holds yellow perch (10 to 30 ft in summer), crappie (10 to 25 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Notable structure
- Deep basin: deep basin, around 187 ft
- Sharp break: drop-off, around 130 ft
- Old creek channel: creek channel, around 110 ft
- Main-lake point: point, around 55 ft
- Secondary point: point, around 55 ft
- Offshore hump: offshore hump, around 39 ft
- Offshore hump: offshore hump, around 37 ft
- Feeding flat: feeding flat, around 20 ft
- Feeding flat: feeding flat, around 20 ft
- Feeding flat: feeding flat, around 20 ft
- Feeding flat: feeding flat, around 20 ft
- Feeding flat: feeding flat, around 19 ft
- Offshore hump: offshore hump, around 18 ft
- Offshore hump: offshore hump, around 18 ft
Fort Peck Lake fishing regulations
Season dates, license requirements, and size and bag limits for Montana waters are set by the Montana Fish, Wildlife & Parks — and special regulations can apply to Fort Peck Lake specifically, so confirm the current rules before you fish.
Check the official Montana fishing regulations →
Common questions
How deep is Fort Peck Lake?
Fort Peck Lake is about 220 ft (67 m) deep at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.
What fish are in Fort Peck Lake?
Anglers target smallmouth bass, walleye, sauger, northern pike, crappie, yellow perch, chinook salmon, lake trout on Fort Peck Lake.
Where is the best fishing spot on Fort Peck Lake?
Creek inflow is the top-rated area: a inflow / creek mouth in about 8 ft of water that rates prime for walleye in spring. The interactive chart above rates every spot for each species and season.
When is the best time to fish Fort Peck Lake?
For walleye, the summer bite is best in the evening and early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
What are the fishing regulations for Fort Peck Lake?
Fishing on Fort Peck Lake is regulated by the Montana Fish, Wildlife & Parks. Check the official Montana regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Nearby waters
Valley Reservoir 10 mi · Paulo Reservoir 34 mi · Current Reservoir 54 mi · Big Wall Pond 98 mi · Spotted Eagle Lake 108 mi · Fife Lake 120 mi, SK · Castle Rock Reservoir 127 mi · Crystal Lake (Fergus) 130 mi · BR0045 Reservoir 131 mi · Anita Reservoir 131 mi · Gartside Reservoir 132 mi · Boxelder Lake 139 mi
See how Fort Peck Lake stacks up: best smallmouth bass lakes in Montana · best walleye lakes in Montana · best sauger lakes in Montana · best northern pike lakes in Montana
Browse all Montana fishing maps or see every water on DepthScout. How we build these maps. For fishing guidance only, never navigation.