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636-acre section. Midland's harbour bay in Severn Sound: bass and pike on the shoreline weed beds, walleye and perch out on the flats. The lake tops out around 21 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. What follows comes from the same scoring engine that paints the spots above.
The drawn water covers 639 acres wrapped in 6.6 miles of bank. With a 1.8 development index there's bank structure worth casting at, in moderation. Tip to tip the water measures near 2.2 mi with a 0.9-mi widest point. If the bite dies, Georgian Bay - Sturgeon Bay is 2 mi to the east.
Come spring, look for smallmouth bass tight to the bank in 3 to 12 ft. Expect a summer slide to 6 to 21 ft, then a winter hold in 6 to 21 ft. Start at Shoreline point. It's a point holding about 12 ft of water and rates prime come fall. Prime time lands in early morning and the evening. A drop shot (goby/minnow) or a ned rig is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Shoreline point (12 ft) | Ned rig, Tube jig |
| Summer | 6 to 21 ft | dawn & dusk | Sharp break (13 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 6 to 21 ft | midday & dawn | Shoreline point (12 ft) | Jerkbait, Blade bait |
| Winter | 6 to 21 ft | midday | Sharp break (13 ft) | Blade bait, Hair jig |
When the water first warms, largemouth bass slide up into 2 to 10 ft. By summer they slide out to 8 to 20 ft, and by winter most fish are in 6 to 21 ft. If you only fish one area, make it Weed flat: a weed flat around 7 ft that scores prime in spring. In summer the feeding windows fall in early morning and the evening. Keep a texas-rigged 10" worm or a deep-diving crankbait rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Weed flat (7 ft) | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Sharp break (13 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Shoreline point (12 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 6 to 21 ft | midday | Sharp break (13 ft) | Blade bait, Jigging spoon |
Come spring, look for northern pike tight to the bank in 2 to 8 ft. Expect a summer slide to 8 to 20 ft, then a winter hold in 5 to 15 ft. Start at Weed flat. It's a weed flat holding about 7 ft of water and rates prime come spring. Prime time lands in early morning and the evening. A bucktail or a weedless spoon over cabbage is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Weed flat (7 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Weed flat (7 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Sharp break (13 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Weed flat (7 ft) | Tip-ups, Large jigging spoon |
When the water first warms, muskellunge slide up into 3 to 12 ft. Summer is a 6 to 21 ft game here, winter a 6 to 21 ft one. Start at Sharp break. It's a drop-off holding about 13 ft of water and rates prime come fall. The feeding windows run the evening and early morning. Keep a double-10 bucktail or a topwater (walk-the-dog / creeper) rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Weed flat (7 ft) | Smaller bucktail (#8 blades), 6" glide bait |
| Summer | 6 to 21 ft | dusk & dawn | Shoreline point (12 ft) | Double-10 bucktail, Topwater (walk-the-dog / creeper) |
| Fall | 6 to 21 ft | midday & dusk | Sharp break (13 ft) | Big rubber (Bull Dawg style), 10"+ glide bait |
| Winter | 6 to 21 ft | midday | Sharp break (13 ft) | Large rubber, crawled slow |
Spring puts walleye in skinny water — 4 to 15 ft is the zone. As the season builds they drop to 6 to 21 ft, wintering in 6 to 21 ft. Fall walleye concentrate at Sharp break, a prime-rated drop-off around 13 ft. Warm-month bites cluster around the evening and early morning. A crawler harness on bottom bouncer or a deep crankbait (trolled) covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Shoreline point (12 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 6 to 21 ft | dusk & dawn | Sharp break (13 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 6 to 21 ft | dusk & night | Sharp break (13 ft) | Jigging rap, Jig + big minnow |
| Winter | 6 to 21 ft | dusk & dawn | Sharp break (13 ft) | Jigging spoon + minnow head, Rattle bait |
Start shallow in spring: yellow perch sit in 3 to 12 ft that time of year. Summer pushes them deeper, 6 to 21 ft, and winter fish settle into 6 to 21 ft. The spot to know is Weed flat, a weed flat in about 7 ft of water that rates prime for yellow perch in spring. Warm-month bites cluster around early morning. Throw a drop-shot micro plastics or a small spoon tipped with worm until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Weed flat (7 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 6 to 21 ft | dawn | Sharp break (13 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 6 to 21 ft | midday | Sharp break (13 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 6 to 21 ft | midday & dawn | Sharp break (13 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Georgian Bay - Midland Bay also holds crappie (6 to 21 ft in summer), pumpkinseed (2 to 10 ft in summer), rock bass (5 to 20 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Count 3 structure marks on this chart. The deepest, Sharp break, sits near 13 ft.
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 - Midland Bay specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Georgian Bay - Midland Bay is about 21 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 smallmouth bass, largemouth bass, northern pike, muskellunge, walleye, yellow perch, crappie, pumpkinseed, rock bass on Georgian Bay - Midland Bay.
Shoreline point is the top-rated area: a point in about 12 ft of water that rates prime for smallmouth bass in fall. Every other rated spot, per species and season, is on the map above.
For smallmouth 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 - Midland 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.
Georgian Bay - Sturgeon Bay 2 mi · Little Lake 2 mi · St. Andrews Lake 3 mi · Georgian Bay - Penetanguishene Bay 4 mi · Farlain Lake 6 mi · Georgian Bay - Severn Sound 7 mi · Georgian Bay - Matchedash Bay 7 mi · Barron's Lake 7 mi · Macey Lake 7 mi · Kettle's Lake 8 mi · Cranberry Lake 9 mi · Gloucester Pool 10 mi
See how Georgian Bay - Midland Bay stacks up: best largemouth bass lakes in Ontario · best smallmouth bass lakes in Ontario · best walleye lakes in Ontario · best northern pike 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.