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Fishing Coopers Lake: what the data says
280-acre lake near Montana. The lake tops out around 70 ft. The depth chart is built from real state fisheries GPS surveys, so the humps, channels and drop-offs you see are measured, not guessed. Here is how the season plays out for each species, straight from the data behind the map.
Brook Trout fishing at Coopers Lake
Start shallow in spring: brook trout sit in 2 to 15 ft that time of year. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 3 to 20 ft. Main-lake point is the standout, a point at roughly 14 ft, rated prime for spring brook trout. Plan around early morning and the evening in the warm months. A small spoon fished deep or a trolled lake-clear wobbler + worm covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Small jigging spoon, Tungsten jig + plastic |
Cutthroat Trout fishing at Coopers Lake
In spring, cutthroat trout run shallow here, mostly 3 to 15 ft. Summer pushes them deeper, 10 to 35 ft, and winter fish settle into 10 to 40 ft. Main-lake point is the standout, a point at roughly 14 ft, rated prime for fall cutthroat trout. Best bite is early morning and the evening. Tie on a trolled spoon (small) or a inline spinner and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 15 ft | dawn & dusk | Inline spinner (silver/gold), Small spoon |
| Summer | 10 to 35 ft | dawn & dusk | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Casting spoon, Inline spinner |
| Winter | 10 to 40 ft | dawn | Small jigging spoon, Marabou jig |
Notable structure
- Deep basin: deep basin, around 68 ft
- Break off the point: drop-off, around 60 ft
- Shallow bay flat: weed flat, around 15 ft
- Main-lake point: point, around 14 ft
- Secondary point: point, around 13 ft
- Back-bay flat: weed flat, around 8 ft
Common questions
How deep is Coopers Lake?
Coopers Lake is about 70 ft at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
What fish are in Coopers Lake?
Anglers target brook trout, cutthroat trout on Coopers Lake.
Where is the best fishing spot on Coopers Lake?
Main-lake point is the top-rated area: a point in about 14 ft of water that rates prime for cutthroat trout in fall. Open the map above to see every rated spot for each species and season.
When is the best time to fish Coopers Lake?
For brook trout, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Nearby waters
Otatsy, Lake · Canyon Lake (Lewis and Clark) · Browns Lake · Camp Lake (Lewis and Clark) · Parker Lake · Heart Lake (Lewis and Clark)
See how Coopers Lake stacks up: best brook trout lakes in Montana · best cutthroat trout lakes in Montana
Browse all Montana fishing maps or every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.