Sign inSign up free Sign inSign up free Sign inSign up freeLake depth chart
Today's read
Recent public catches load as you reach this section.
6-acre lake in Cochrane District, Ontario. The lake tops out around 48 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 1988 (a transect sounding survey). Species by species, here's what the data says the year looks like.
The drawn water covers 5 acres wrapped in 0.4 miles of bank. Nearly circular (index 1.2), so the story is the bottom, not the bank. Roughly 49% of the water is 15 ft or less, the band where the food chain lives. It sits in Cochrane District. If the bite dies, Dent L. is 0 mi to the west.
Come spring, look for brook trout tight to the bank in 2 to 15 ft. Expect a summer slide to 10 to 30 ft, then a winter hold in 3 to 20 ft. Start at Shoreline break. It's a drop-off holding about 6 ft of water and rates prime come winter. Prime time lands in early morning and the evening. A small spoon fished deep or a trolled lake-clear wobbler + worm is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Shallow bay flat (2 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Shoreline break (6 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 (6 ft) | Small jigging spoon, Tungsten jig + plastic |
Guilfoyle L.37 carries 3 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 45 ft down.
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 Guilfoyle L.37 specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Guilfoyle L.37 is about 48 ft (15 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1988 (a transect sounding survey).
Anglers target brook trout on Guilfoyle L.37.
Shoreline break is the top-rated area: a drop-off in about 6 ft of water that rates prime for brook trout in winter. Scroll up to the map for the complete spot list by 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 Guilfoyle L.37 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.
Dent L. 0 mi · Guilfoyle No. 43 1 mi · Guilfoyle L. 30 1 mi · Guilfoyle Lake 44 1 mi · Guilfoyle Lake 27 1 mi · Guilfoyle L. 50 1 mi · Guilfoyle L. 49 1 mi · Bennet Lake 2 mi · Guilfoyle Lake 23 2 mi · Guilfoyle Lake 17 2 mi · Guilfoyle Lake 3 mi · Guilfoyle Lake 64 3 mi
See how Guilfoyle L.37 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: published agency survey data. 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.