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2,509-acre lake in Sudbury District, Ontario. The lake tops out around 120 ft. The depth data here comes from the Ontario MNRF survey of 1973, a decades-old survey (a transect sounding survey). Here is how the season plays out for each species, straight from the data behind the map.
The outline encloses 2,520 acres, worked by 38 miles of shoreline, broken up by 33 islands. With a shoreline index of 5.4, this water is all arms and coves — edge habitat well beyond its acreage. 56% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. Figure 5.7 mi of water from one end to the other, 2.4 mi at the beam. Sudbury District claims this one. If the bite dies, Duff Lake is 4 mi to the north.
When the water first warms, brook trout slide up into 2 to 15 ft. Summer is a 10 to 30 ft game here, winter a 3 to 20 ft one. Start at Sharp break. It's a drop-off holding about 10 ft of water and rates prime come summer. The feeding windows run early morning and the evening. Keep a small spoon fished deep or a trolled lake-clear wobbler + worm rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (1 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Sharp break (10 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Rock reef (2 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Sharp break (10 ft) | Small jigging spoon, Tungsten jig + plastic |
Early season lake trout use the shallows, holding in 10 to 40 ft. Summer is a 50 to 120 ft game here, winter a 20 to 80 ft one. The chart's best answer is Deep basin — deep basin, 116 ft, prime for summer. Best bite is early morning. Tie on a white tube jig (deep) or a magnum spoon on downrigger and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Sharp break (10 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 50 to 120 ft | dawn | Deep basin (116 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Rock reef (2 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | Sharp break (10 ft) | White tube jig, Airplane jig |
Structure-wise the chart holds 9 features, led in depth by Deep basin at roughly 116 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 Florence Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Florence Lake is about 120 ft (37 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1973, a decades-old survey (a transect sounding survey).
Anglers target brook trout, lake trout on Florence Lake.
Deep basin is the top-rated area: a deep basin in about 116 ft of water that rates prime for lake trout in summer. Every other rated spot, per species and season, is on the map above.
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 Florence 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.
Duff Lake 4 mi · Bluesucker L. 5 mi · Pilgrim Lake 5 mi · Benner Lake 6 mi · Rodd Lake 6 mi · Dee's Lake 7 mi · Jim Edwards Lake 8 mi · Solace Lake 8 mi · Mihell Lake 8 mi · McCulloch Lake 8 mi · Scarecrow Lake 9 mi · Dry Lake 9 mi
See how Florence Lake stacks up: best lake trout lakes in Ontario · best brook trout lakes in Ontario
More water nearby: Sudbury District fishing maps (868 charts). Browse all Ontario fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. 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.