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450-acre lake in Sudbury District, Ontario. The lake tops out around 37 ft. Depth here is modeled from the true shoreline and max depth rather than surveyed; use it to plan, not to navigate. Below is the species-by-species picture, pulled from the same data the map uses.
Frog Lake maps at 449 acres behind 9.8 miles of shoreline. A development index of 3.3 means a maze of bays and points: far more casting targets than a round bowl of the same size. About 80% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. Call it 2.6 mi long by 0.7 mi wide at the broadest reach. Sudbury District claims this one. If the bite dies, Copperfield Lake is 6 mi to the northwest.
Spring puts lake whitefish in skinny water — 11 to 37 ft is the zone. Summer fish stay in 11 to 37 ft, and winter fish hold in 11 to 37 ft. Deep basin is the standout, a deep basin at roughly 31 ft, rated prime for summer lake whitefish. Plan around early morning in the warm months. A blade bait vertical or a small jigging spoon covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 11 to 37 ft | midday & dawn | Break off the point (17 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 11 to 37 ft | dawn | Deep basin (31 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Break off the point (17 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 11 to 37 ft | midday & dawn | Deep basin (31 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Spring puts cisco (lake herring) in skinny water — 9 to 37 ft is the zone. Summer fish stay in 11 to 37 ft, and winter fish hold in 11 to 37 ft. Deep basin is the standout, a deep basin at roughly 31 ft, rated prime for spring cisco (lake herring). Plan around early morning in the warm months. A vertical flutter spoon (small) or a drop-shot micro plastic covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 9 to 37 ft | dawn & dusk | Deep basin (31 ft) | Small silver spoon, Tiny swim jig (white) |
| Summer | 11 to 37 ft | dawn | Deep basin (31 ft) | Vertical flutter spoon (small), Drop-shot micro plastic |
| Fall | 5 to 25 ft | dusk & dawn | Break off the point (17 ft) | Small casting spoon, Inline spinner (silver) |
| Winter | 11 to 37 ft | dawn | Deep basin (31 ft) | Small jigging spoon (glow/silver), Tungsten jig + minnow head |
Start shallow in spring: walleye sit in 4 to 15 ft that time of year. Summer pushes them deeper, 15 to 35 ft, and winter fish settle into 11 to 37 ft. The spot to know is Break off the point, a drop-off in about 17 ft of water that rates prime for walleye in fall. Warm-month bites cluster around the evening and early morning. Throw a crawler harness on bottom bouncer or a deep crankbait (trolled) until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Main-lake point (9 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 15 to 35 ft | dusk & dawn | Break off the point (17 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 11 to 37 ft | dusk & night | Break off the point (17 ft) | Jigging rap, Jig + big minnow |
| Winter | 11 to 37 ft | dusk & dawn | Deep basin (31 ft) | Jigging spoon + minnow head, Rattle bait |
Frog Lake carries 6 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 31 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 Frog Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Frog Lake is about 37 ft (11 m) deep 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.
Anglers target lake whitefish, cisco (lake herring), walleye on Frog Lake.
Deep basin is the top-rated area: a deep basin in about 31 ft of water that rates prime for lake whitefish in summer. The interactive chart above rates every spot for each species and season.
For lake whitefish, 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 Frog 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.
Copperfield Lake 6 mi · Alcorn Lake 7 mi · Lincoln L. 642448 8 mi · Schewabik Lake 8 mi · Renée Lake 10 mi · Bonar Lake 10 mi · Lincoln Lake 11 mi · Robson Lake 12 mi · Harold Lake 13 mi · Sherlock Lake 13 mi · Van Lake 13 mi · Carty Lake 14 mi
See how Frog Lake stacks up: best walleye lakes in Ontario · best lake whitefish lakes in Ontario · best cisco (lake herring) lakes in Ontario
More water nearby: Sudbury District fishing maps (868 charts). Browse all Ontario fishing maps or see every water on DepthScout. 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.