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24-acre lake in Cochrane District, Ontario. The lake tops out around 30 ft. The depth data here comes from the Ontario MNRF survey of 1967, a decades-old survey (a transect sounding survey). The rest of this page walks each species through its year, using the map's own scoring.
Seahorse Lake maps at 25 acres behind 1.5 miles of shoreline. With a 2.1 development index there's bank structure worth casting at, in moderation. Roughly 71% of the water is 15 ft or less, the band where the food chain lives. End to end it runs roughly 0.4 mi, about 0.2 mi across. It sits in Cochrane District. Gourlay Lake sits 0 mi northwest — the closest neighbouring chart.
Early season brook trout use the shallows, holding in 2 to 15 ft. Expect a summer slide to 10 to 30 ft, then a winter hold in 3 to 20 ft. Put Deep basin first on the milk run — a deep basin near 28 ft that grades prime for summer. In summer the feeding windows fall in early morning and the evening. Tie on a small spoon fished deep or a trolled lake-clear wobbler + worm and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (3 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Deep basin (28 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (3 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Break off the point (10 ft) | Small jigging spoon, Tungsten jig + plastic |
Seahorse Lake carries 4 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 28 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 Seahorse Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Seahorse Lake is about 30 ft (9 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1967, a decades-old survey (a transect sounding survey).
Anglers target brook trout on Seahorse Lake.
Deep basin is the top-rated area: a deep basin in about 28 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 Seahorse 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.
Gourlay Lake 0 mi · Old Man Lake 1 mi · Ramey Lake 1 mi · Gaf Lake 1 mi · Lallan Lake 1 mi · Lulu Lake 1 mi · Little Esker Lake 1 mi · Panagapka Lake 2 mi · Hazel Lake 2 mi · Campbell Lake 2 mi · Mall Lake 2 mi · Bea Lake 2 mi
See how Seahorse 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.