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Fishing Cooper Lake: what the data says
66-acre lake near Ontario. The lake tops out around 39 ft. The contours are modeled from the water's real shoreline and maximum depth. Treat them as a rough guide, and never use them for navigation. Here is how the season plays out for each species, straight from the data behind the map.
Cisco (Lake Herring) fishing at Cooper Lake
Start shallow in spring: cisco (lake herring) sit in 10 to 39 ft that time of year. Summer fish stay in 12 to 39 ft, and winter fish hold in 12 to 39 ft. If you only fish one area, make it Deep basin: a deep basin around 33 ft that scores prime in spring. Best bite is early morning. A vertical flutter spoon (small) or a drop-shot micro plastic covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 10 to 39 ft | dawn & dusk | Small silver spoon, Tiny swim jig (white) |
| Summer | 12 to 39 ft | dawn | Vertical flutter spoon (small), Drop-shot micro plastic |
| Fall | 5 to 25 ft | dusk & dawn | Small casting spoon, Inline spinner (silver) |
| Winter | 12 to 39 ft | dawn | Small jigging spoon (glow/silver), Tungsten jig + minnow head |
Yellow Perch fishing at Cooper Lake
Spring yellow perch on Cooper Lake hold shallow, usually 3 to 12 ft. By summer they slide out to 10 to 30 ft, and by winter most fish are in 15 to 35 ft. The spot to know is Shallow bay flat, a weed flat in about 5 ft of water that rates prime for yellow perch in spring. Best bite is early morning. A drop-shot micro plastics or a small spoon tipped with worm covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Tungsten jig + spikes, Rattle spoon (small) |
Smallmouth Bass fishing at Cooper Lake
Start shallow in spring: smallmouth bass sit in 3 to 12 ft that time of year. By summer they slide out to 10 to 30 ft, and by winter most fish are in 12 to 39 ft. Main-lake point is the standout, a point at roughly 10 ft, rated prime for fall smallmouth bass. Best bite is early morning and the evening. Summer baits: a drop shot (goby/minnow) or a ned rig gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Jerkbait, Blade bait |
| Winter | 12 to 39 ft | midday | Blade bait, Hair jig |
Pumpkinseed fishing at Cooper Lake
In spring, pumpkinseed run shallow here, mostly 1 to 8 ft. They move out to 2 to 10 ft in summer and finish the year down in 6 to 18 ft. The spot to know is Shallow bay flat, a weed flat in about 5 ft of water that rates prime for pumpkinseed in spring. Plan around the evening and early morning in the warm months. Summer baits: a micro tube or a sponge spider (fly) gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 1 to 8 ft | midday & dusk | Micro jig under a float, Tiny beetle-spin |
| Summer | 2 to 10 ft | dusk & dawn | Micro tube, Sponge spider (fly) |
| Fall | 4 to 14 ft | dusk & dawn | Micro jig + waxworm, Small spoon tipped |
| Winter | 6 to 18 ft | dawn | Tungsten ice jig + plastic, Tiny spoon |
Brown Bullhead fishing at Cooper Lake
Start shallow in spring: brown bullhead sit in 2 to 8 ft that time of year. By summer they slide out to 3 to 12 ft, and by winter most fish are in 10 to 25 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 5 ft that scores prime in spring. In summer the feeding windows fall in after dark and the evening.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 8 ft | dusk & night | |
| Summer | 3 to 12 ft | night & dusk | |
| Fall | 5 to 15 ft | dusk | |
| Winter | 10 to 25 ft | midday |
Notable structure
- Deep basin: deep basin, around 33 ft
- Break off the point: drop-off, around 18 ft
- Main-lake point: point, around 10 ft
- Secondary point: point, around 10 ft
- Shallow bay flat: weed flat, around 5 ft
- Back-bay flat: weed flat, around 5 ft
Common questions
How deep is Cooper Lake?
Cooper Lake is about 39 ft 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 Cooper Lake?
Anglers target smallmouth bass, yellow perch, cisco (lake herring), pumpkinseed, brown bullhead on Cooper Lake.
Where is the best fishing spot on Cooper Lake?
Deep basin is the top-rated area: a deep basin in about 33 ft of water that rates prime for cisco (lake herring) in spring. Open the map above to see every rated spot for each species and season.
When is the best time to fish Cooper Lake?
For cisco (lake herring), the summer bite is best in early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Nearby waters
Burns Lake · Wilson Lake · Sixteen Mile Lake · Fifteen Mile Lake · Seventeen Mile Lake · Solitaire Lake
See how Cooper Lake stacks up: best smallmouth bass lakes in Ontario · best yellow perch lakes in Ontario · best cisco (lake herring) lakes in Ontario · best pumpkinseed lakes in Ontario
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