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Recent public catches load as you reach this section.
31-acre lake in Algoma District, Ontario. The lake tops out around 16 ft. The depth chart comes from Ontario Ministry of Natural Resources and Forestry bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The depth data here comes from the Ontario MNRF survey of 2022 (an MNRF lake survey). The rest of this page walks each species through its year, using the map's own scoring.
Fillion L. maps at 31 acres behind 1.6 miles of shoreline, with a single island in the mix. A middling shoreline index (2.1) gives it some bays to work without being a maze. Roughly 94% of the water is 15 ft or less, the band where the food chain lives. Call it 0.5 mi long by 0.2 mi wide at the broadest reach. Algoma District claims this one. If the bite dies, Lake One is 1 mi to the west.
Come spring, look for brook trout tight to the bank in 2 to 15 ft. They move out to 5 to 16 ft in summer and finish the year down in 2 to 16 ft. If you only fish one area, make it Deep basin: a deep basin around 16 ft that scores prime in summer. Best bite is early morning and the evening. A small spoon fished deep or a trolled lake-clear wobbler + worm is the honest summer answer here.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (5 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 5 to 16 ft chart-limited; documented 10 to 30 ft | dawn & dusk | Deep basin (16 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (5 ft) | Small spoon (orange), Spinner |
| Winter | 2 to 16 ft chart-limited; documented 3 to 20 ft | dawn | Deep basin (16 ft) | Small jigging spoon, Tungsten jig + plastic |
The spring pattern is a shallow one: walleye in 4 to 15 ft. As the season builds they drop to 5 to 16 ft, wintering in 5 to 16 ft. Top water on the chart: Break off the point, a drop-off in the 6 ft range, prime in fall. Time it for the evening and early morning. Summer baits: a crawler harness on bottom bouncer or a deep crankbait (trolled) gets it done.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Main-lake point (5 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 5 to 16 ft chart-limited; documented 15 to 35 ft | dusk & dawn | Break off the point (6 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 5 to 16 ft chart-limited; documented 12 to 40 ft | dusk & night | Break off the point (6 ft) | Jigging rap, Jig + big minnow |
| Winter | 5 to 16 ft chart-limited; documented 20 to 40 ft | dusk & dawn | Deep basin (16 ft) | Jigging spoon + minnow head, Rattle bait |
In spring, yellow perch run shallow here, mostly 3 to 12 ft. Summer pushes them deeper, 5 to 16 ft, and winter fish settle into 5 to 16 ft. Shallow bay flat is the standout, a weed flat at roughly 3 ft, rated prime for spring yellow perch. Time it for early morning. You won't need more than a drop-shot micro plastics or a small spoon tipped with worm most summer days.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (3 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 5 to 16 ft chart-limited; documented 10 to 30 ft | dawn | Deep basin (16 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 5 to 16 ft chart-limited; documented 12 to 35 ft | midday | Deep basin (16 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 5 to 16 ft chart-limited; documented 15 to 35 ft | midday & dawn | Deep basin (16 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Early season smallmouth bass use the shallows, holding in 3 to 12 ft. Expect a summer slide to 5 to 16 ft, then a winter hold in 5 to 16 ft. Put Main-lake point first on the milk run — a point near 5 ft that grades prime for fall. In summer the feeding windows fall in early morning and the evening. Tie on a drop shot (goby/minnow) or a ned rig and you're in the game.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Main-lake point (5 ft) | Ned rig, Tube jig |
| Summer | 5 to 16 ft chart-limited; documented 10 to 30 ft | dawn & dusk | Break off the point (6 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 5 to 16 ft chart-limited; documented 8 to 25 ft | midday & dawn | Main-lake point (5 ft) | Jerkbait, Blade bait |
| Winter | 5 to 16 ft chart-limited; documented 20 to 45 ft | midday | Break off the point (6 ft) | Blade bait, Hair jig |
In spring, rock bass run shallow here, mostly 2 to 10 ft. Midsummer fish sit out in 4 to 16 ft before dropping to 5 to 16 ft for winter. Summer rock bass concentrate at Main-lake point, a prime-rated point around 5 ft. Fish it in the evening and you'll meet the bite. You won't need more than a ned rig (small) or a marabou jig most summer days.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Main-lake point (5 ft) | 1/16 oz jig + grub, Small inline spinner |
| Summer | 4 to 16 ft chart-limited; documented 5 to 20 ft | dusk | Main-lake point (5 ft) | Ned rig (small), Marabou jig |
| Fall | 5 to 16 ft chart-limited; documented 8 to 22 ft | midday | Break off the point (6 ft) | Small tube jig, Inline spinner |
| Winter | 5 to 16 ft chart-limited; documented 12 to 30 ft | midday | Deep basin (16 ft) | Tungsten jig + plastic, Small spoon + spike |
Early season brown bullhead use the shallows, holding in 2 to 8 ft. Summer is a 3 to 12 ft game here, winter a 5 to 16 ft one. The chart's best answer is Deep basin — deep basin, 16 ft, prime for winter. Best bite is after dark and the evening.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | dusk & night | Shallow bay flat (3 ft) | |
| Summer | 3 to 12 ft | night & dusk | Shallow bay flat (3 ft) | |
| Fall | 5 to 15 ft | dusk | Deep basin (16 ft) | |
| Winter | 5 to 16 ft chart-limited; documented 10 to 25 ft | midday | Deep basin (16 ft) |
Fillion L. carries 5 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 16 ft down.
Season dates, license requirements, and size and bag limits for Ontario waters are set by the Ontario fishing regulations (FMZ summary) — and special regulations can apply to Fillion L. specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Fillion L. is about 16 ft (5 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 2022 (an MNRF lake survey).
Anglers target brook trout, walleye, yellow perch, smallmouth bass, rock bass, brown bullhead on Fillion L.. This isn't a survey of the lake — none is on record for it — but an informed estimate from the species Ontario's MNRF recorded in the nearest surveyed lakes, filtered to this lake's depth and habitat.
Break off the point is the top-rated area: a drop-off in about 6 ft of water that rates prime for walleye in fall. Open the map above to see every rated spot for each species and season.
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.
Fishing on Fillion L. is regulated by the Ontario fishing regulations (FMZ summary). Check the official Ontario regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Lake One 1 mi · Legge Lake 1 mi · Kaufman Lake 1 mi · Reserve Lake 1 mi · Jarvis L. 9 2 mi · Brilliant Lake 2 mi · Jarvis Lake 2 mi · Unnamed Lake 3 mi · Upper Island Lake 3 mi · Weashkog L. 3 mi · Lost Loon Lake 3 mi · St. Joe Lake 3 mi
See how Fillion L. stacks up: best smallmouth bass lakes in Ontario · best walleye lakes in Ontario · best yellow perch lakes in Ontario · best brook trout lakes in Ontario
More water nearby: Algoma District fishing maps (1026 charts). Browse all Ontario fishing maps. See every water on DepthScout. Bathymetry: published agency survey data. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.