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Rating depth structure for brook trout.
Recent public catches load as you reach this section.
5-acre lake in Cochrane District, Ontario. The lake tops out around 46 ft. This chart interpolates between a real shoreline and a known maximum depth. It will point you at likely water, but it is not a navigation product. The rest of this page walks each species through its year, using the map's own scoring.
The outline encloses 5 acres, worked by 0.4 miles of shoreline. At index 1.2 the outline is almost a bowl — read the depth changes, not the shoreline. 34% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water. Cochrane District claims this one. Its nearest charted neighbour, Wallingford Lake, is 4 mi to the north.
Spring brook trout on Keefer Lake 18 hold shallow, usually 2 to 15 ft. They move out to 10 to 30 ft in summer and finish the year down in 3 to 20 ft. Put Shoreline break first on the milk run — a drop-off near 21 ft that grades prime for summer. The feeding windows run early morning and the evening. The summer box starts with a small spoon fished deep or a trolled lake-clear wobbler + worm.
| 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 | Shoreline break (21 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | open water | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Shoreline break (21 ft) | Small jigging spoon, Tungsten jig + plastic |
Count 3 structure marks on this chart. The deepest, Deep basin, sits near 39 ft.
Access data: Geospatial Ontario - Fishing Access Points; Government of Ontario - MNR Unpatented Crown Land Shoreline; Government of Ontario - MNR Unpatented Crown Land Shoreline. Confirm conditions and fees locally before you launch.
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 Keefer Lake 18 specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Keefer Lake 18 is about 46 ft (14 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 Keefer Lake 18.
Shoreline break is the top-rated area: a drop-off in about 21 ft of water that rates prime for brook trout in summer. The interactive chart above rates every 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 Keefer Lake 18 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.
Wallingford Lake 4 mi · Reeves Lake 4 14 mi · Hope Lake 16 mi · Baker Lake 17 mi · Horseshoe Lake 17 mi · Cook's Lake 17 mi · Blue Lake 18 mi · Fortune Lake 19 mi · Kaneki Lake 21 mi · Meadow Lake 21 mi · Reid Lake 21 mi · Beaver Lake 21 mi
See how Keefer Lake 18 stacks up: best brook trout lakes in Ontario
More water nearby: Cochrane District fishing maps (673 charts). Browse all Ontario fishing maps. 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.