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581-acre lake in Nipissing District, Ontario. The lake tops out around 140 ft. The depth data here comes from a transect sounding survey by the Ontario MNRF. The season-by-season read for each species follows, from the map's own numbers.
Traced from the shoreline, Cauchon Lake runs 583 acres with 12.1 miles of edge, with 5 islands in the mix. A development index of 3.6 means a maze of bays and points: far more casting targets than a round bowl of the same size. About 34% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Call it 3.1 mi long by 1.3 mi wide at the broadest reach. The water lies in Nipissing District. The nearest mapped water is Club Lake, 2 mi to the southwest.
Start shallow in spring: brook trout sit in 2 to 15 ft that time of year. Warm water sends them out to 10 to 30 ft; cold water stacks them in 3 to 20 ft. Top water on the chart: Main-lake point, a point in the 14 ft range, prime in spring. Fish it in early morning and the evening and you'll meet the bite. Throw a small spoon fished deep or a trolled lake-clear wobbler + worm until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (14 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (39 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (14 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Shallow bay flat (9 ft) | Small jigging spoon, Tungsten jig + plastic |
The spring pattern is a shallow one: landlocked salmon in 1 to 15 ft. Midsummer fish sit out in 25 to 60 ft before dropping to 10 to 40 ft for winter. The spot to know is Break off the point, a drop-off in about 39 ft of water that rates prime for landlocked salmon in summer. Plan around early morning and the evening in the warm months. Summer baits: a dodger + streamer down deep or a thin spoon on lead core gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 15 ft | dawn & dusk | Main-lake point (14 ft) | Streamer flies (Grey Ghost) off boards, Thin spoon (Mooselook style) |
| Summer | 25 to 60 ft | dawn & dusk | Break off the point (39 ft) | Dodger + streamer down deep, Thin spoon on lead core |
| Fall | 5 to 30 ft | dawn & dusk | Main-lake point (14 ft) | Casting spoon at the mouths, Streamers |
| Winter | 10 to 40 ft | dawn | Break off the point (39 ft) | Small jigging spoon, Swedish pimple + smelt |
When the water first warms, cisco (lake herring) slide up into 10 to 40 ft. By summer they slide out to 40 to 80 ft, and by winter most fish are in 20 to 60 ft. If you only fish one area, make it Break off the point: a drop-off around 39 ft that scores prime in winter. In summer the feeding windows fall in early morning. Keep a vertical flutter spoon (small) or a drop-shot micro plastic rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Break off the point (39 ft) | Small silver spoon, Tiny swim jig (white) |
| Summer | 40 to 80 ft | dawn | Break off the point (39 ft) | Vertical flutter spoon (small), Drop-shot micro plastic |
| Fall | 5 to 25 ft | dusk & dawn | open water | Small casting spoon, Inline spinner (silver) |
| Winter | 20 to 60 ft | dawn | Break off the point (39 ft) | Small jigging spoon (glow/silver), Tungsten jig + minnow head |
The spring pattern is a shallow one: brown bullhead in 2 to 8 ft. As the season builds they drop to 3 to 12 ft, wintering in 10 to 25 ft. Top water on the chart: Back-bay flat, a weed flat in the 2 ft range, prime in spring. Time it for after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | dusk & night | Back-bay flat (2 ft) | |
| Summer | 3 to 12 ft | night & dusk | Shallow bay flat (9 ft) | |
| Fall | 5 to 15 ft | dusk | Shallow bay flat (9 ft) | |
| Winter | 10 to 25 ft | midday | Deep basin (126 ft) |
Start shallow in spring: burbot sit in 25 to 70 ft that time of year. Summer pushes them deeper, 50 to 120 ft, and winter fish settle into 15 to 60 ft. The spot to know is Deep basin, a deep basin in about 126 ft of water that rates prime for burbot in summer. Warm-month bites cluster around after dark and midday. Throw a heavy jig + cut bait until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 25 to 70 ft | night & dusk | Break off the point (39 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 50 to 120 ft | night & midday | Deep basin (126 ft) | Heavy jig + cut bait |
| Fall | 30 to 80 ft | night & dusk | Break off the point (39 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 15 to 60 ft | night & dusk | Break off the point (39 ft) | Glow tungsten + cut bait, Rattle spoon + minnow head |
Cauchon Lake carries 7 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 126 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 Cauchon Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Cauchon Lake is about 140 ft (43 m) deep at its deepest point. The depth data here comes from a transect sounding survey by the Ontario MNRF.
Anglers target brook trout, landlocked salmon, cisco (lake herring), brown bullhead, burbot on Cauchon Lake.
Back-bay flat is the top-rated area: a weed flat in about 2 ft of water that rates prime for brown bullhead in spring. The interactive chart above rates every 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 Cauchon 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.
Club Lake 2 mi · Waterclear Lake 3 mi · Mouse Lake 3 mi · Mink Lake 3 mi · Little Cauchon Lake 3 mi · Gouinlock Lake 4 mi · Loxley Lake 4 mi · Whitebirch Lake 4 mi · Little Mink Lake 5 mi · Laurel Lake 5 mi · Erables Lake 6 mi · Maple Lake 6 mi
See how Cauchon Lake stacks up: best brook trout lakes in Ontario · best landlocked salmon lakes in Ontario · best burbot lakes in Ontario · best cisco (lake herring) lakes in Ontario
More water nearby: Nipissing District fishing maps (683 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.