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110-acre lake in Haliburton County, Ontario. The lake tops out around 42 ft. The depth data here comes from a transect sounding survey by the Ontario MNRF. Below is the species-by-species picture, pulled from the same data the map uses.
The drawn water covers 110 acres wrapped in 2.6 miles of bank. A middling shoreline index (1.8) gives it some bays to work without being a maze. 44% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. Figure 0.9 mi of water from one end to the other, 0.4 mi at the beam. Haliburton County claims this one. Its nearest charted neighbour, Green Canoe Lake, is 1 mi to the east.
Spring splake on Guilford Lake hold shallow, usually 5 to 25 ft. They move out to 13 to 42 ft in summer and finish the year down in 9 to 42 ft. Put Break off the point first on the milk run — a drop-off near 18 ft that grades prime for summer. The feeding windows run early morning and the evening. The summer box starts with a trolled spoon at the thermocline or a white tube jig (deep).
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dawn & dusk | Main-lake point (8 ft) | Small casting spoon (gold/orange), Inline spinner |
| Summer | 13 to 42 ft | dawn & dusk | Break off the point (18 ft) | Trolled spoon at the thermocline, White tube jig (deep) |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Jerkbait |
| Winter | 9 to 42 ft | dawn | Break off the point (18 ft) | Jigging spoon tipped with minnow head, Small white tube |
Spring puts yellow perch in skinny water — 3 to 12 ft is the zone. As the season builds they drop to 10 to 30 ft, wintering in 15 to 35 ft. Spring yellow perch concentrate at Shallow bay flat, a prime-rated weed flat around 3 ft. Warm-month bites cluster around early morning. A drop-shot micro plastics or a small spoon tipped with worm covers the summer program.
| 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 | Deep basin (41 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Spring puts rock bass in skinny water — 2 to 10 ft is the zone. Warm water sends them out to 5 to 20 ft; cold water stacks them in 12 to 30 ft. Main-lake point is the standout, a point at roughly 8 ft, rated prime for summer rock bass. Plan around the evening in the warm months. A ned rig (small) or a marabou jig covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Main-lake point (8 ft) | 1/16 oz jig + grub, Small inline spinner |
| Summer | 5 to 20 ft | dusk | Main-lake point (8 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 pumpkinseed in skinny water — 1 to 8 ft is the zone. Warm water sends them out to 2 to 10 ft; cold water stacks them in 6 to 18 ft. Shallow bay flat is the standout, a weed flat at roughly 3 ft, rated prime for spring pumpkinseed. Plan around the evening and early morning in the warm months. A micro tube or a sponge spider (fly) covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 8 ft | midday & dusk | Shallow bay flat (3 ft) | Micro jig under a float, Tiny beetle-spin |
| Summer | 2 to 10 ft | dusk & dawn | Shallow bay flat (3 ft) | Micro tube, Sponge spider (fly) |
| Fall | 4 to 14 ft | dusk & dawn | Shallow bay flat (3 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 6 to 18 ft | dawn | Shallow bay flat (3 ft) | Tungsten ice jig + plastic, Tiny spoon |
Spring brown bullhead on Guilford Lake hold shallow, usually 2 to 8 ft. They move out to 3 to 12 ft in summer and finish the year down in 10 to 25 ft. Put Shallow bay flat first on the milk run — a weed flat near 3 ft that grades prime for spring. The feeding windows run 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 bay flat (3 ft) | |
| Winter | 10 to 25 ft | midday | Deep basin (41 ft) |
Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 41 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 Guilford Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Guilford Lake is about 42 ft (13 m) deep at its deepest point. The depth data here comes from a transect sounding survey by the Ontario MNRF.
Anglers target splake, yellow perch, rock bass, pumpkinseed, brown bullhead on Guilford Lake.
Break off the point is the top-rated area: a drop-off in about 18 ft of water that rates prime for splake in summer. Every other rated spot, per species and season, is on the map above.
For splake, 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 Guilford 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.
Green Canoe Lake 1 mi · Blue Lake 2 mi · Redstone Lake 2 mi · Spider Lake 2 mi · Moose Lake 3 mi · Duck Lake 3 mi · Dog Lake 3 mi · Morrow Lake 3 mi · Eagle Lake 3 mi · Coleman Lake 3 mi · Oblong Lake 3 mi · Harburn Lake 3 mi
See how Guilford Lake stacks up: best yellow perch lakes in Ontario · best rock bass lakes in Ontario · best splake lakes in Ontario · best pumpkinseed lakes in Ontario
More water nearby: Haliburton County fishing maps (295 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.