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237-acre lake in Peterborough County, Ontario. The lake tops out around 66 ft. The depth data here comes from the Ontario MNRF survey of 1983 (a transect sounding survey). What the data behind the map says about each species, season by season:
Traced from the shoreline, Long Lake runs 238 acres with 10.9 miles of edge, broken up by 7 islands. The 5 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. About 28% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Figure 3.4 mi of water from one end to the other, 0.4 mi at the beam. The water lies in Peterborough County. The nearest mapped water is Pilot Lake, 1 mi to the south.
In spring, lake trout run shallow here, mostly 10 to 40 ft. Summer pushes them deeper, 20 to 66 ft, and winter fish settle into 17 to 66 ft. Deep basin is the standout, a deep basin at roughly 65 ft, rated prime for summer lake trout. Time it for early morning. You won't need more than a white tube jig (deep) or a magnum spoon on downrigger most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Secondary point (12 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 20 to 66 ft | dawn | Deep basin (65 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Secondary point (12 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 17 to 66 ft | dawn | Deep basin (65 ft) | White tube jig, Airplane jig |
When the water first warms, yellow perch slide up into 3 to 12 ft. By summer they slide out to 10 to 30 ft, and by winter most fish are in 15 to 35 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 3 ft that scores prime in spring. In summer the feeding windows fall in early morning. Keep a drop-shot micro plastics or a small spoon tipped with worm rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (3 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Break off the point (18 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Break off the point (18 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Break off the point (18 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Spring rock bass on Long Lake hold shallow, usually 2 to 10 ft. By summer they slide out to 5 to 20 ft, and by winter most fish are in 12 to 30 ft. The chart's best answer is Main-lake point — point, 9 ft, prime for summer. Prime time lands in the evening. The summer box starts with a ned rig (small) or a marabou jig.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Main-lake point (9 ft) | 1/16 oz jig + grub, Small inline spinner |
| Summer | 5 to 20 ft | dusk | Main-lake point (9 ft) | Ned rig (small), Marabou jig |
| Fall | 8 to 22 ft | midday | Break off the point (18 ft) | Small tube jig, Inline spinner |
| Winter | 12 to 30 ft | midday | Break off the point (18 ft) | Tungsten jig + plastic, Small spoon + spike |
Spring puts brown bullhead in skinny water — 2 to 8 ft is the zone. As the season builds they drop to 3 to 12 ft, wintering in 10 to 25 ft. Spring brown bullhead concentrate at Shallow bay flat, a prime-rated weed flat around 3 ft. Warm-month bites cluster around after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | dusk & night | Shallow bay flat (3 ft) | |
| Summer | 3 to 12 ft | night & dusk | Shallow bay flat (3 ft) | |
| Fall | 5 to 15 ft | dusk | Shallow feeding flat (8 ft) | |
| Winter | 10 to 25 ft | midday | Deep basin (65 ft) |
The chart marks 7 structure features on Long Lake; the deepest is Deep basin at about 65 ft.
Access data: Land Information Ontario — Fishing Access Point. 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 Long Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Long Lake is about 66 ft (20 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1983 (a transect sounding survey).
Anglers target lake trout, yellow perch, rock bass, brown bullhead on Long Lake.
Deep basin is the top-rated area: a deep basin in about 65 ft of water that rates prime for lake trout in summer. Open the map above to see every rated spot for each species and season.
For lake trout, the summer bite is best in early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Long 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.
Pilot Lake 1 mi · Buzzard Lake 2 mi · Little Long Lake 2 mi · Loucks Lake 2 mi · Crab Lake 2 mi · McGee Lake 3 mi · Stoplog Lake 3 mi · Wolf Lake 3 mi · Cox Lake 4 mi · Cherry Lake 4 mi · Triangle Lake 4 mi · Shark Lake 4 mi
See how Long Lake stacks up: best yellow perch lakes in Ontario · best lake trout lakes in Ontario · best rock bass lakes in Ontario · best brown bullhead lakes in Ontario
More water nearby: Peterborough County fishing maps (83 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.