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Fishing Firth Lake: what the data says
1,123-acre lake near Ontario. The lake tops out around 20 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.
Lake Whitefish fishing at Firth Lake
In spring, lake whitefish run shallow here, mostly 6 to 20 ft. Summer fish stay in 6 to 20 ft, and winter fish hold in 6 to 20 ft. The spot to know is Deep basin, a deep basin in about 17 ft of water that rates prime for lake whitefish in summer. In summer the feeding windows fall in early morning. Tie on a blade bait vertical or a small jigging spoon and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 6 to 20 ft | midday & dawn | Small jig + waxworm, Blade bait (small) |
| Summer | 6 to 20 ft | dawn | Blade bait vertical, Small jigging spoon |
| Fall | 5 to 20 ft | dusk | Small spoon (gold), Jig + plastic larva |
| Winter | 6 to 20 ft | midday & dawn | Jigging spoon + bead chain, Tungsten jig + waxie |
Walleye fishing at Firth Lake
Start shallow in spring: walleye sit in 4 to 15 ft that time of year. They move out to 6 to 20 ft in summer and finish the year down in 6 to 20 ft. The spot to know is Break off the point, a drop-off in about 9 ft of water that rates prime for walleye in fall. Plan around the evening and early morning in the warm months. Summer baits: a crawler harness on bottom bouncer or a deep crankbait (trolled) gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | 1/8 oz jig + minnow, Hair jig |
| Summer | 6 to 20 ft | dusk & dawn | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 6 to 20 ft | dusk & night | Jigging rap, Jig + big minnow |
| Winter | 6 to 20 ft | dusk & dawn | Jigging spoon + minnow head, Rattle bait |
Yellow Perch fishing at Firth Lake
Spring yellow perch on Firth Lake hold shallow, usually 3 to 12 ft. By summer they slide out to 6 to 20 ft, and by winter most fish are in 6 to 20 ft. Shallow bay flat is the standout, a weed flat at roughly 3 ft, rated prime for spring yellow perch. Plan around early morning in the warm months. 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 | 6 to 20 ft | dawn | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 6 to 20 ft | midday | Jigging spoon (small), Perch rig / spreader |
| Winter | 6 to 20 ft | midday & dawn | Tungsten jig + spikes, Rattle spoon (small) |
Northern Pike fishing at Firth Lake
In spring, northern pike run shallow here, mostly 2 to 8 ft. They move out to 8 to 20 ft in summer and finish the year down in 5 to 15 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 3 ft that scores prime in spring. In summer the feeding windows fall in early morning and the evening. Tie on a bucktail or a weedless spoon over cabbage and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Tip-ups, Large jigging spoon |
Smallmouth Bass fishing at Firth Lake
Start shallow in spring: smallmouth bass sit in 3 to 12 ft that time of year. They move out to 6 to 20 ft in summer and finish the year down in 6 to 20 ft. Main-lake point is the standout, a point at roughly 8 ft, rated prime for fall smallmouth bass. In summer the feeding windows fall in 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 | 6 to 20 ft | dawn & dusk | Drop shot (goby/minnow), Ned rig |
| Fall | 6 to 20 ft | midday & dawn | Jerkbait, Blade bait |
| Winter | 6 to 20 ft | midday | Blade bait, Hair jig |
Notable structure
- Deep basin: deep basin, around 17 ft
- Break off the point: drop-off, around 9 ft
- Main-lake point: point, around 8 ft
- Secondary point: point, around 8 ft
- Shallow bay flat: weed flat, around 3 ft
- Back-bay flat: weed flat, around 3 ft
Common questions
How deep is Firth Lake?
Firth Lake is about 20 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 Firth Lake?
Anglers target smallmouth bass, walleye, northern pike, yellow perch, lake whitefish on Firth Lake.
Where is the best fishing spot on Firth Lake?
Deep basin is the top-rated area: a deep basin in about 17 ft of water that rates prime for lake whitefish in summer. Open the map above to see every rated spot for each species and season.
When is the best time to fish Firth Lake?
For lake whitefish, 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
Serpentine Lake · Lett Lake · North Gamble Lake · Gorman Lake · Logan Lake · Margueratt Lake
See how Firth Lake stacks up: best smallmouth bass lakes in Ontario · best walleye lakes in Ontario · best northern pike lakes in Ontario · best yellow perch lakes in Ontario
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