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Reopens January 1 · FMZ 15 zone-wide season. Lake-specific exceptions and sanctuaries can differ — check the official summary before you go.
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47-acre lake in Muskoka District Municipality, Ontario. The lake tops out around 65 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 1973, a decades-old survey (an MNRF lake survey). Every species below gets its seasonal read from the same numbers driving the chart.
The outline encloses 47 acres, worked by 1.7 miles of shoreline. A middling shoreline index (1.8) gives it some bays to work without being a maze. About 56% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. The basin spans about 0.7 mi end to end and 0.2 mi across at its widest. It sits in Muskoka District Municipality. Toad Lake sits 1 mi northwest — the closest neighbouring chart.
Spring lake trout on South Tasso Lake hold shallow, usually 10 to 40 ft. By summer they slide out to 20 to 65 ft, and by winter most fish are in 16 to 65 ft. The chart's best answer is Deep basin — deep basin, 51 ft, prime for summer. Prime time lands in early morning. The summer box starts with a white tube jig (deep) or a magnum spoon on downrigger.
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 | 10 to 40 ft | dawn & dusk | Break off the point (42 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 20 to 65 ft chart-limited; documented 50 to 120 ft | dawn | Deep basin (51 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Break off the point (42 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 16 to 65 ft chart-limited; documented 20 to 80 ft | dawn | Deep basin (51 ft) | White tube jig, Airplane jig |
In spring, yellow perch run shallow here, mostly 3 to 12 ft. Midsummer fish sit out in 10 to 30 ft before dropping to 15 to 35 ft for winter. Summer yellow perch concentrate at Shallow bay flat, a prime-rated weed flat around 15 ft. Fish it in early morning and you'll meet the bite. You won't need more than a drop-shot micro plastics or a small spoon tipped with worm most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (15 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Shallow bay flat (15 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Break off the point (42 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Shallow bay flat (15 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Early season smallmouth bass use the shallows, holding in 3 to 12 ft. Summer is a 10 to 30 ft game here, winter a 20 to 45 ft one. The chart's best answer is Break off the point — drop-off, 42 ft, prime for winter. Best bite is early morning and the evening. Tie on a drop shot (goby/minnow) or a ned rig and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Main-lake point (2 ft) | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Main-lake point (2 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Main-lake point (2 ft) | Jerkbait, Blade bait |
| Winter | 20 to 45 ft | midday | Break off the point (42 ft) | Blade bait, Hair jig |
In spring, rock bass run shallow here, mostly 2 to 10 ft. Summer pushes them deeper, 5 to 20 ft, and winter fish settle into 12 to 30 ft. Main-lake point is the standout, a point at roughly 2 ft, rated prime for spring rock bass. Time it for the evening. You won't need more than a ned rig (small) or a marabou jig most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Main-lake point (2 ft) | 1/16 oz jig + grub, Small inline spinner |
| Summer | 5 to 20 ft | dusk | Main-lake point (2 ft) | Ned rig (small), Marabou jig |
| Fall | 8 to 22 ft | midday | Main-lake point (2 ft) | Small tube jig, Inline spinner |
| Winter | 12 to 30 ft | midday | open water | Tungsten jig + plastic, Small spoon + spike |
Spring burbot on South Tasso Lake hold shallow, usually 20 to 65 ft. Depth-wise the year is flat: 20 to 65 ft in summer, 15 to 60 ft once it turns cold. The chart's best answer is Deep basin — deep basin, 51 ft, prime for spring. Prime time lands in after dark and midday. The summer box starts with a heavy jig + cut bait.
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 | 20 to 65 ft chart-limited; documented 25 to 70 ft | night & dusk | Deep basin (51 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 20 to 65 ft chart-limited; documented 50 to 120 ft | night & midday | Deep basin (51 ft) | Heavy jig + cut bait |
| Fall | 20 to 65 ft chart-limited; documented 30 to 80 ft | night & dusk | Deep basin (51 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 15 to 60 ft | night & dusk | Deep basin (51 ft) | Glow tungsten + cut bait, Rattle spoon + minnow head |
The chart marks 5 structure features on South Tasso Lake; the deepest is Deep basin at about 51 ft.
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 South Tasso Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
South Tasso Lake is about 65 ft (20 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1973, a decades-old survey (an MNRF lake survey).
Anglers target lake trout, yellow perch, smallmouth bass, rock bass, burbot on South Tasso Lake.
Deep basin is the top-rated area: a deep basin in about 51 ft of water that rates prime for lake trout in summer. Scroll up to the map for the complete spot list by species and season.
For lake trout, 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.
Fishing on South Tasso Lake 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.
Toad Lake 1 mi · Martencamp Lake 1 mi · Camp Lake 1 mi · Samlet Lake 1 mi · Big Hoover Lake 2 mi · West Ermine L. 2 mi · Oxbow Lake 2 mi · Tasso Lake 2 mi · Flossie Lake 2 mi · Upper Oxbow Lake 2 mi · Doughnut Lake 3 mi · Lucy Lake 3 mi
See how South Tasso Lake stacks up: best smallmouth bass lakes in Ontario · best yellow perch lakes in Ontario · best lake trout lakes in Ontario · best burbot lakes in Ontario
More water nearby: Muskoka District Municipality fishing maps (276 charts). Browse all Ontario fishing maps. See every water on DepthScout. Depth data: Ontario Ministry of Natural Resources and Forestry, Lake survey data (Open Government Licence – Ontario). 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.