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198-acre lake in Peterborough County, Ontario. The lake tops out around 24 ft. The depth data here comes from a transect sounding survey by the Ontario MNRF. Every species below gets its seasonal read from the same numbers driving the chart.
Traced from the shoreline, Serpentine Lake runs 199 acres with 9.1 miles of edge, broken up by 7 islands. An index of 4.6 puts the bank firmly in maze territory: point after pocket after cove, every one a casting target. Roughly 74% of the water is 15 ft or less, the band where the food chain lives. End to end it runs roughly 1.8 mi, about 0.7 mi across. You'll find it in Peterborough County. Closest neighbour on DepthScout: Copper Lake, 1 mi south of here.
Early season yellow perch use the shallows, holding in 3 to 12 ft. Summer is a 7 to 24 ft game here, winter a 7 to 24 ft one. The chart's best answer is Deep basin — deep basin, 24 ft, prime for fall. Best bite is early morning. Tie on a drop-shot micro plastics or a small spoon tipped with worm and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (2 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 7 to 24 ft | dawn | Deep basin (24 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 7 to 24 ft | midday | Deep basin (24 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 7 to 24 ft | midday & dawn | Deep basin (24 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Spring puts largemouth bass in skinny water — 2 to 10 ft is the zone. Warm water sends them out to 8 to 20 ft; cold water stacks them in 7 to 24 ft. Shallow bay flat is the standout, a weed flat at roughly 2 ft, rated prime for spring largemouth bass. Plan around early morning and the evening in the warm months. A texas-rigged 10" worm or a deep-diving crankbait covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Shallow bay flat (2 ft) | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Break off the point (21 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Main-lake point (1 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 7 to 24 ft | midday | Break off the point (21 ft) | Blade bait, Jigging spoon |
Come spring, look for pumpkinseed tight to the bank in 1 to 8 ft. They move out to 2 to 10 ft in summer and finish the year down in 6 to 18 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 2 ft that scores prime in spring. Best bite is the evening and early morning. A micro tube or a sponge spider (fly) is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 8 ft | midday & dusk | Shallow bay flat (2 ft) | Micro jig under a float, Tiny beetle-spin |
| Summer | 2 to 10 ft | dusk & dawn | Shallow bay flat (2 ft) | Micro tube, Sponge spider (fly) |
| Fall | 4 to 14 ft | dusk & dawn | Shallow bay flat (2 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 6 to 18 ft | dawn | Shallow bay flat (2 ft) | Tungsten ice jig + plastic, Tiny spoon |
The chart marks 6 structure features on Serpentine Lake; the deepest is Deep basin at about 24 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 Serpentine Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Serpentine Lake is about 24 ft (7 m) deep at its deepest point. The depth data here comes from a transect sounding survey by the Ontario MNRF.
Anglers target yellow perch, largemouth bass, pumpkinseed on Serpentine Lake.
Deep basin is the top-rated area: a deep basin in about 24 ft of water that rates prime for yellow perch in fall. Scroll up to the map for the complete spot list by species and season.
For yellow perch, 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 Serpentine 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.
Copper Lake 1 mi · Anderson Lake 1 mi · North Rathbun Lake 2 mi · Rathbun Lake 2 mi · Little Anstruther Lake 2 mi · Clanricarde Lake 3 mi · Fagan Lake 4 mi · Anstruther Lake 4 mi · Wolf Lake 4 mi · Sucker Lake 4 mi · Loon Call Lake 4 mi · Crab Lake 5 mi
See how Serpentine Lake stacks up: best largemouth bass lakes in Ontario · best yellow perch lakes in Ontario · best pumpkinseed 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.