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82-acre lake in Haliburton County, Ontario. The lake tops out around 72 ft. The depth data here comes from the Ontario MNRF survey of 1967, a decades-old survey (a transect sounding survey). What the data behind the map says about each species, season by season:
On the chart, Tedious Lake draws 82 acres inside 2.9 miles of shoreline. With a shoreline index of 2.3, this water is all arms and coves — edge habitat well beyond its acreage. 27% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. The basin spans about 1 mi end to end and 0.4 mi across at its widest. The water lies in Haliburton County. For a second option, Bitter Lake lies 1 mi north.
The spring pattern is a shallow one: lake trout in 10 to 40 ft. As the season builds they drop to 22 to 72 ft, wintering in 18 to 72 ft. Top water on the chart: Deep basin, a deep basin in the 69 ft range, prime in summer. Time it for early morning. Summer baits: a white tube jig (deep) or a magnum spoon on downrigger gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Break off the point (16 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 22 to 72 ft | dawn | Deep basin (69 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Main-lake point (8 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 18 to 72 ft | dawn | Deep basin (69 ft) | White tube jig, Airplane jig |
Start shallow in spring: rainbow trout sit in 5 to 20 ft that time of year. Warm water sends them out to 8 to 30 ft; cold water stacks them in 8 to 40 ft. Top water on the chart: Break off the point, a drop-off in the 16 ft range, prime in winter. Fish it in early morning and the evening and you'll meet the bite. Throw a dodger + spoon (deep troll) or a flutter spoon until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Main-lake point (8 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Break off the point (16 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (16 ft) | Jigging spoon, Tube jig (white) |
Spring walleye on Tedious Lake hold shallow, usually 4 to 15 ft. They move out to 15 to 35 ft in summer and finish the year down in 20 to 40 ft. Put Break off the point first on the milk run — a drop-off near 16 ft that grades prime for fall. The feeding windows run the evening and early morning. The summer box starts with a crawler harness on bottom bouncer or a deep crankbait (trolled).
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Main-lake point (8 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 15 to 35 ft | dusk & dawn | Break off the point (16 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 12 to 40 ft | dusk & night | Break off the point (16 ft) | Jigging rap, Jig + big minnow |
| Winter | 20 to 40 ft | dusk & dawn | Break off the point (16 ft) | Jigging spoon + minnow head, Rattle bait |
Early season yellow perch use the shallows, holding in 3 to 12 ft. Expect a summer slide to 10 to 30 ft, then a winter hold in 15 to 35 ft. Put Break off the point first on the milk run — a drop-off near 16 ft that grades prime for summer. In summer the feeding windows fall in 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 | Back-bay flat (13 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Break off the point (16 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Break off the point (16 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Break off the point (16 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Come spring, look for rock bass tight to the bank in 2 to 10 ft. Expect a summer slide to 5 to 20 ft, then a winter hold in 12 to 30 ft. Start at Main-lake point. It's a point holding about 8 ft of water and rates prime come summer. Prime time lands in the evening. A ned rig (small) or a marabou jig is the honest summer answer here.
| 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 (16 ft) | Small tube jig, Inline spinner |
| Winter | 12 to 30 ft | midday | Break off the point (16 ft) | Tungsten jig + plastic, Small spoon + spike |
Start shallow in spring: brown bullhead sit in 2 to 8 ft that time of year. Summer pushes them deeper, 3 to 12 ft, and winter fish settle into 10 to 25 ft. The spot to know is Back-bay flat, a weed flat in about 13 ft of water that rates prime for brown bullhead in summer. 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 (14 ft) | |
| Summer | 3 to 12 ft | night & dusk | Back-bay flat (13 ft) | |
| Fall | 5 to 15 ft | dusk | Shallow bay flat (14 ft) | |
| Winter | 10 to 25 ft | midday | Deep basin (69 ft) |
Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 69 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 Tedious Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Tedious Lake is about 72 ft (22 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 lake trout, rainbow trout, walleye, yellow perch, rock bass, brown bullhead on Tedious Lake.
Deep basin is the top-rated area: a deep basin in about 69 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 Tedious 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.
Bitter Lake 1 mi · Burdock Lake 1 mi · Coleman Lake 2 mi · Cruiser Lake 2 mi · Redstone Lake 2 mi · Klaxon Lake 3 mi · Cranberry Lake 3 mi · Bat Lake 3 mi · Lipsy Lake 3 mi · Pine Lake 3 mi · Blue Lake 4 mi · Guilford Lake 4 mi
See how Tedious Lake stacks up: best walleye lakes in Ontario · best rainbow trout lakes in Ontario · best yellow perch lakes in Ontario · best lake trout 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.