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77-acre lake in Cochrane District, Ontario. The lake tops out around 53 ft. The depth data here comes from the Ontario MNRF survey of 1981 (a transect sounding survey). Below is the species-by-species picture, pulled from the same data the map uses.
Traced from the shoreline, Mile 30 Lake runs 78 acres with 3.7 miles of edge. With a shoreline index of 3, this water is all arms and coves — edge habitat well beyond its acreage. 44% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. The basin spans about 1.4 mi end to end and 0.3 mi across at its widest. You'll find it in Cochrane District. The nearest mapped water is E-11 Lake, 1 mi to the northeast.
In spring, brook trout run shallow here, mostly 2 to 15 ft. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 3 to 20 ft. Break off the point is the standout, a drop-off at roughly 15 ft, rated prime for summer brook trout. Time it for early morning and the evening. You won't need more than a small spoon fished deep or a trolled lake-clear wobbler + worm most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (11 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (15 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (11 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Break off the point (15 ft) | Small jigging spoon, Tungsten jig + plastic |
Count 6 structure marks on this chart. The deepest, Deep basin, sits near 47 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 Mile 30 Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Mile 30 Lake is about 53 ft (16 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1981 (a transect sounding survey).
Anglers target brook trout on Mile 30 Lake.
Break off the point is the top-rated area: a drop-off in about 15 ft of water that rates prime for brook trout in summer. 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 Mile 30 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.
E-11 Lake 1 mi · Truax Lake 5 mi · Obobka Lake 5 mi · Tilia Lake 7 mi · Kawakanika Lake 7 mi · Upper Twin Lake 7 mi · Lower Twin Lake 7 mi · Raynar Lake 8 mi · Nettleton Lake 9 mi · Eli Lake 10 mi · Jemar Lake 11 mi · Chipman Lake 12 mi
See how Mile 30 Lake stacks up: best brook trout lakes in Ontario
More water nearby: Cochrane District fishing maps (673 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.