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1 catch shared on this water. Exact spots stay private, always.
1,990-acre section. The Matchedash marsh at the head of Severn Sound, a Ramsar wetland: a shallow pike, bass and panfish bay with fluctuating water levels. The lake tops out around 19 ft. The depth chart is built from real NOAA hydrographic survey soundings, so the humps, channels and drop-offs you see are measured, not guessed. The rest of this page walks each species through its year, using the map's own scoring.
Traced from the shoreline, Georgian Bay - Matchedash Bay runs 2,000 acres with 18 miles of edge. With a shoreline index of 2.9, this water is all arms and coves — edge habitat well beyond its acreage. The shallow band under 15 ft claims about 98% of the surface — that's where the groceries are. Call it 3.5 mi long by 3.4 mi wide at the broadest reach. Closest neighbour on DepthScout: Cranberry Lake, 4 mi northeast of here.
Spring puts largemouth bass in skinny water — 2 to 10 ft is the zone. Warm water sends them out to 6 to 19 ft; cold water stacks them in 6 to 19 ft. Weed flat is the standout, a weed flat at roughly 4 ft, rated prime for spring largemouth bass. Plan around early morning and the evening in the warm months. A texas-rigged 10" worm or a deep-diving crankbait covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Weed flat (4 ft) | Spinnerbait, Chatterbait |
| Summer | 6 to 19 ft | dawn & dusk | Sharp break (11 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Shoreline point (5 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 6 to 19 ft | midday | Sharp break (11 ft) | Blade bait, Jigging spoon |
In spring, northern pike run shallow here, mostly 2 to 8 ft. Midsummer fish sit out in 6 to 19 ft before dropping to 5 to 15 ft for winter. Spring northern pike concentrate at Weed flat, a prime-rated weed flat around 4 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a bucktail or a weedless spoon over cabbage most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Weed flat (4 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 6 to 19 ft | dawn & dusk | Sharp break (11 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Sharp break (11 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Weed flat (4 ft) | Tip-ups, Large jigging spoon |
Start shallow in spring: muskellunge sit in 3 to 12 ft that time of year. Warm water sends them out to 6 to 19 ft; cold water stacks them in 6 to 19 ft. Top water on the chart: Sharp break, a drop-off in the 11 ft range, prime in fall. Fish it in the evening and early morning and you'll meet the bite. Throw a double-10 bucktail or a topwater (walk-the-dog / creeper) until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Weed flat (4 ft) | Smaller bucktail (#8 blades), 6" glide bait |
| Summer | 6 to 19 ft | dusk & dawn | Shoreline point (10 ft) | Double-10 bucktail, Topwater (walk-the-dog / creeper) |
| Fall | 5 to 19 ft | midday & dusk | Sharp break (11 ft) | Big rubber (Bull Dawg style), 10"+ glide bait |
| Winter | 6 to 19 ft | midday | Deepest basin (16 ft) | Large rubber, crawled slow |
Early season yellow perch use the shallows, holding in 3 to 12 ft. Summer is a 6 to 19 ft game here, winter a 6 to 19 ft one. The chart's best answer is Weed flat — weed flat, 4 ft, prime for spring. Best bite is 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 | Weed flat (4 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 6 to 19 ft | dawn | Deepest basin (16 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 6 to 19 ft | midday | Deepest basin (16 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 6 to 19 ft | midday & dawn | Deepest basin (16 ft) | Tungsten jig + spikes, Rattle spoon (small) |
In spring, crappie run shallow here, mostly 2 to 8 ft. Midsummer fish sit out in 6 to 19 ft before dropping to 6 to 19 ft for winter. Winter crappie concentrate at Deepest basin, a prime-rated deep basin around 16 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a jig trolled/spider-rigged or a small crankbait (trolled) most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Weed flat (4 ft) | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 6 to 19 ft | dawn & dusk | Sharp break (11 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 6 to 19 ft | dawn | Sharp break (11 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 6 to 19 ft | midday | Deepest basin (16 ft) | Tungsten jig + soft plastic, Tiny jigging spoon |
Come spring, look for pumpkinseed tight to the bank in 1 to 8 ft. They move out to 2 to 10 ft in summer and finish the year down in 6 to 18 ft. If you only fish one area, make it Weed flat: a weed flat around 4 ft that scores prime in spring. Best bite is the evening and early morning. A micro tube or a sponge spider (fly) is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 8 ft | midday & dusk | Weed flat (4 ft) | Micro jig under a float, Tiny beetle-spin |
| Summer | 2 to 10 ft | dusk & dawn | Weed flat (4 ft) | Micro tube, Sponge spider (fly) |
| Fall | 4 to 14 ft | dusk & dawn | Weed flat (4 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 6 to 18 ft | dawn | Deepest basin (16 ft) | Tungsten ice jig + plastic, Tiny spoon |
Georgian Bay - Matchedash Bay also holds brown bullhead (3 to 12 ft in summer), common carp (3 to 15 ft in summer), rock bass (5 to 19 ft in summer). Pick any of them on the map above for rated spots and bait picks.
14 pieces of structure are mapped here — Deepest basin, around 16 ft, is the deepest of them.
Access data: Geospatial Ontario - Fishing Access Points. 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 Georgian Bay - Matchedash Bay specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Georgian Bay - Matchedash Bay is about 19 ft (6 m) deep at its deepest point. The depth chart here comes from real NOAA hydrographic surveys, so the contours reflect measured depths.
Anglers target largemouth bass, northern pike, muskellunge, yellow perch, crappie, pumpkinseed, brown bullhead, common carp, rock bass on Georgian Bay - Matchedash Bay.
Weed flat is the top-rated area: a weed flat in about 4 ft of water that rates prime for largemouth bass in spring. The interactive chart above rates every spot for each species and season.
For largemouth bass, 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 Georgian Bay - Matchedash Bay 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.
Cranberry Lake 4 mi · Barron's Lake 5 mi · Otter Lake 5 mi · MacLean Lake 5 mi · Georgian Bay - Sturgeon Bay 5 mi · Gloucester Pool 6 mi · Burrows Lake 6 mi · Georgian Bay - Midland Bay 7 mi · Horseshoe Lake 7 mi · Mountain Lake 8 mi · Little Lake 8 mi · Baxter Lake 8 mi
See how Georgian Bay - Matchedash Bay stacks up: best largemouth bass lakes in Ontario · best northern pike lakes in Ontario · best crappie lakes in Ontario · best muskellunge lakes in Ontario
Browse all Ontario fishing maps or see every water on DepthScout. Bathymetry credit: NOAA hydrographic surveys. 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.