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125-acre lake in Sudbury District, Ontario. The lake tops out around 69 ft. The contours come from a model of the real basin shape and its known max depth. Read them as probabilities, not soundings, and keep them out of navigation decisions. Species by species, here's what the data says the year looks like.
Drawn out, this is 126 acres of water rimmed by 4.9 miles of bank. The 3.1 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. About 78% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. Call it 1.9 mi long by 0.4 mi wide at the broadest reach. You'll find it in Sudbury District. The nearest mapped water is Dry Lake, 1 mi to the west.
Spring puts brook trout in skinny water — 2 to 15 ft is the zone. As the season builds they drop to 10 to 30 ft, wintering in 3 to 20 ft. Summer brook trout concentrate at Break off the point, a prime-rated drop-off around 31 ft. Warm-month bites cluster around early morning and the evening. A small spoon fished deep or a trolled lake-clear wobbler + worm covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Shallow bay flat (6 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (31 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (17 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Shallow bay flat (6 ft) | Small jigging spoon, Tungsten jig + plastic |
6 pieces of structure are mapped here — Deep basin, around 59 ft, is the deepest of them.
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 Katherine Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Katherine Lake is about 69 ft (21 m) deep 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.
Anglers target brook trout on Katherine Lake.
Break off the point is the top-rated area: a drop-off in about 31 ft of water that rates prime for brook 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 Katherine 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.
Dry Lake 1 mi · Stonehenge Lake 1 mi · Macpherson Lake 3 mi · Jim Edwards Lake 3 mi · Chris Willis Lake 3 mi · Sladen Lake 40 5 mi · Stars L. 5 mi · Sucker Gut Lake 5 mi · Willow Island Lake 5 mi · Medina L. 932 6 mi · Hobart Lake 6 mi · Dee's Lake 7 mi
See how Katherine Lake stacks up: 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. 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.