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77-acre lake near City of Saint John. Government of New Brunswick lake depth survey. The lake tops out around 32 ft. The depth chart is built from real state fisheries GPS surveys, so the humps, channels and drop-offs you see are measured, not guessed. Species by species, here's what the data says the year looks like.
Drawn out, this is 77 acres of water rimmed by 2.7 miles of bank. A development index of 2.2 means a maze of bays and points: far more casting targets than a round bowl of the same size. The shallow band under 15 ft claims about 57% of the surface — that's where the groceries are. End to end it runs roughly 0.7 mi, about 0.5 mi across. You'll find it in Saint John County. The nearest mapped water is Douglas Lake, 1 mi to the southwest.
Start shallow in spring: smallmouth bass sit in 3 to 12 ft that time of year. Warm water sends them out to 10 to 30 ft; cold water stacks them in 10 to 32 ft. Top water on the chart: Main-lake point, a point in the 11 ft range, prime in fall. Fish it in early morning and the evening and you'll meet the bite. Throw a drop shot (goby/minnow) or a ned rig until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Main-lake point (11 ft) | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (23 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Main-lake point (11 ft) | Jerkbait, Blade bait |
| Winter | 10 to 32 ft | midday | Break off the point (23 ft) | Blade bait, Hair jig |
When the water first warms, chain pickerel slide up into 2 to 10 ft. Summer is a 3 to 15 ft game here, winter a 5 to 18 ft one. Start at Shallow bay flat. It's a weed flat holding about 3 ft of water and rates prime come spring. The feeding windows run early morning and the evening. Keep a weedless spoon + trailer or a buzzbait rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Shallow bay flat (3 ft) | Inline spinner (silver), Small spoon (red/white) |
| Summer | 3 to 15 ft | dawn & dusk | Shallow bay flat (3 ft) | Weedless spoon + trailer, Buzzbait |
| Fall | 4 to 15 ft | midday & dawn | Shallow bay flat (3 ft) | Jerkbait along weed edges, Spinnerbait |
| Winter | 5 to 18 ft | dawn | Shallow bay flat (3 ft) | Jigging spoon (through ice) |
Come spring, look for yellow perch tight to the bank in 3 to 12 ft. They move out to 10 to 30 ft in summer and finish the year down in 10 to 32 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 3 ft that scores prime in spring. Best bite is early morning. A drop-shot micro plastics or a small spoon tipped with worm is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (3 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Deep basin (30 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 10 to 32 ft | midday | Deep basin (30 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 10 to 32 ft | midday & dawn | Deep basin (30 ft) | Tungsten jig + spikes, Rattle spoon (small) |
In spring, brook trout run shallow here, mostly 2 to 15 ft. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 3 to 20 ft. Deep basin is the standout, a deep basin at roughly 30 ft, rated prime for summer brook trout. Time it for early morning and the evening. You won't need more than a small spoon fished deep or a trolled lake-clear wobbler + worm most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (11 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Deep basin (30 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (11 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Shallow bay flat (3 ft) | Small jigging spoon, Tungsten jig + plastic |
In spring, white perch run shallow here, mostly 4 to 15 ft. Summer pushes them deeper, 10 to 32 ft, and winter fish settle into 10 to 32 ft. Deep basin is the standout, a deep basin at roughly 30 ft, rated prime for summer white perch. Time it for early morning. You won't need more than a small spinner rig drifted or a 1/8 oz jigging spoon most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk | Shallow bay flat (3 ft) | Small jig + curly tail, Inline spinner (silver) |
| Summer | 10 to 32 ft | dawn | Deep basin (30 ft) | Small spinner rig drifted, 1/8 oz jigging spoon |
| Fall | 10 to 32 ft | midday | Deep basin (30 ft) | Jigging spoon (small), Blade bait |
| Winter | 10 to 32 ft | dusk | Deep basin (30 ft) | Small rattle spoon, Tungsten + spikes |
Count 6 structure marks on this chart. The deepest, Deep basin, sits near 30 ft.
Season dates, license requirements, and size and bag limits for New Brunswick waters are set by the New Brunswick fishing rules — and special regulations can apply to Treadwell Lake specifically, so confirm the current rules before you fish.
Check the official New Brunswick fishing regulations →
Treadwell Lake is about 32 ft (10 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Anglers target smallmouth bass, chain pickerel, yellow perch, brook trout, white perch on Treadwell Lake. This isn't a survey of the water — none is published for it — but an informed estimate from the species common to the region, narrowed by this water's depth, size and each species' range.
Main-lake point is the top-rated area: a point in about 11 ft of water that rates prime for smallmouth bass in fall. The interactive chart above rates every spot for each species and season.
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 Treadwell Lake is regulated by the New Brunswick fishing rules. Check the official New Brunswick regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Douglas Lake 1 mi · Loch Lomond 3 mi · Dolan Lake 4 mi · Hunter Lake 4 mi · Beaver Lake 4 mi · Taylor Lake 5 mi · Otter Lake 5 mi · Fisher Lakes 8 mi · Lily Lake 9 mi · Pickett Lake 13 mi · Spruce Lake 17 mi · Round Lake 17 mi
See how Treadwell Lake stacks up: best smallmouth bass lakes in New Brunswick · best yellow perch lakes in New Brunswick · best brook trout lakes in New Brunswick · best chain pickerel lakes in New Brunswick
More water nearby: Saint John County fishing maps (19 charts). Browse all New Brunswick 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.