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Rating depth structure for lake trout.
Shared by DepthScout anglers. Exact spots stay private, always.
167-acre lake in Sudbury District, Ontario. The lake tops out around 89 ft. The chart is a model: real shoreline, published maximum depth, interpolated in between. A planning tool, never a navigation product. Here is how the season plays out for each species, straight from the data behind the map.
Traced from the shoreline, Upper Green Lake runs 167 acres with 4 miles of edge. The 2.2 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. Littoral water — the productive band under ~15 ft — makes up 34% of this chart, as modeled. Figure 1.2 mi of water from one end to the other, 0.5 mi at the beam. The water lies in Sudbury District. The nearest mapped water is Path Lake, 2 mi to the east.
Start shallow in spring: lake trout sit in 10 to 40 ft that time of year. Summer pushes them deeper, 27 to 89 ft, and winter fish settle into 20 to 80 ft. The spot to know is Deep basin, a deep basin in about 76 ft of water that rates prime for lake trout in summer. Warm-month bites cluster around early morning. Throw a white tube jig (deep) or a magnum spoon on downrigger until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Main-lake point (22 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 27 to 89 ft | dawn | Deep basin (76 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Main-lake point (22 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | Deep basin (76 ft) | White tube jig, Airplane jig |
Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 76 ft.
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 Upper Green Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Upper Green Lake is about 89 ft (27 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 trout on Upper Green Lake.
Deep basin is the top-rated area: a deep basin in about 76 ft of water that rates prime for lake trout in summer. Every other rated spot, per species and season, is on the map above.
For lake trout, 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 Upper Green 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.
Path Lake 2 mi · Athlone Lake 4 mi · Elboga Lake 4 mi · Muldrew L. 48 4 mi · Muldrew L. 49 and 50 5 mi · Antrim L. 54 5 mi · Antrim Lake 7 mi · Pogamasing Lake 7 mi · Twisted Lake 7 mi · Lower Muldrew Lake 7 mi · Raven Lake 8 mi · Bobwhite L. 9 mi
See how Upper Green Lake stacks up: best lake trout 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.