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Fishing Cavern Lake: what the data says
56-acre lake near Ontario. The lake tops out around 78 ft. The contours are modeled from the water's real shoreline and maximum depth. Treat them as a rough guide, and never use them for navigation. Here is how the season plays out for each species, straight from the data behind the map.
Brook Trout fishing at Cavern Lake
Start shallow in spring: brook trout sit in 2 to 15 ft that time of year. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 3 to 20 ft. The spot to know is Shallow bay flat, a weed flat in about 6 ft of water that rates good for brook trout in spring. In summer the feeding windows fall in early morning and the evening. Tie on a small spoon fished deep or a trolled lake-clear wobbler + worm and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Small jigging spoon, Tungsten jig + plastic |
Burbot fishing at Cavern Lake
Spring burbot on Cavern Lake hold shallow, usually 25 to 70 ft. They move out to 23 to 78 ft in summer and finish the year down in 15 to 60 ft. The spot to know is Deep basin, a deep basin in about 66 ft of water that rates prime for burbot in spring. Plan around after dark and midday in the warm months. Summer baits: a heavy jig + cut bait gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 25 to 70 ft | night & dusk | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 23 to 78 ft | night & midday | Heavy jig + cut bait |
| Fall | 23 to 78 ft | night & dusk | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 15 to 60 ft | night & dusk | Glow tungsten + cut bait, Rattle spoon + minnow head |
Notable structure
- Deep basin: deep basin, around 66 ft
- Break off the point: drop-off, around 35 ft
- Main-lake point: point, around 20 ft
- Secondary point: point, around 20 ft
- Shallow bay flat: weed flat, around 6 ft
- Back-bay flat: weed flat, around 6 ft
Common questions
How deep is Cavern Lake?
Cavern Lake is about 78 ft at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.
What fish are in Cavern Lake?
Anglers target brook trout, burbot on Cavern Lake.
Where is the best fishing spot on Cavern Lake?
Deep basin is the top-rated area: a deep basin in about 66 ft of water that rates prime for burbot in spring. Open the map above to see every rated spot for each species and season.
When is the best time to fish Cavern Lake?
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.
Nearby waters
Bishops Lake · Welburn Lake · Innes Lake · Miner Lake · Fall Lake · Golden Gate Lake
See how Cavern Lake stacks up: best brook trout lakes in Ontario · best burbot lakes in Ontario
Browse all Ontario fishing maps or every water on DepthScout. How we build these maps. For fishing guidance only, never navigation.