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Rating depth structure for yellow perch.
Shared by DepthScout anglers. Exact spots stay private, always.
139-acre lake near Mason County. The lake tops out around 50 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. What follows comes from the same scoring engine that paints the spots above.
The outline encloses 119 acres, worked by 2.8 miles of shoreline. A middling shoreline index (1.8) gives it some bays to work without being a maze. About 23% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. The basin spans about 1.3 mi end to end and 0.3 mi across at its widest. Mason County claims this one. Its nearest charted neighbour, Emerson Lake, is 1 mi to the southeast.
In spring, yellow perch run shallow here, mostly 3 to 12 ft. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 15 to 35 ft. Shallow bay flat is the standout, a weed flat at roughly 11 ft, rated prime for spring yellow perch. Time it for early morning. You won't need more than a drop-shot micro plastics or a small spoon tipped with worm most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (11 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Break off the point (28 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Break off the point (28 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Break off the point (28 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 50 ft.
Season dates, license requirements, and size and bag limits for Michigan waters are set by the Michigan DNR — and special regulations can apply to Long Lake specifically, so confirm the current rules before you fish.
Check the official Michigan fishing regulations →
Long Lake is about 50 ft (15 m) deep at its deepest point. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Anglers target yellow perch on Long Lake.
Shallow bay flat is the top-rated area: a weed flat in about 11 ft of water that rates prime for yellow perch in spring. Every other rated spot, per species and season, is on the map above.
For yellow perch, 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 Long Lake is regulated by the Michigan DNR. Check the official Michigan regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Emerson Lake 1 mi · Gooseneck Lake 1 mi · Tallman Lake 2 mi · Pere Marquette River 5 mi · Ford Lake 7 mi · Bartons Lake 7 mi · Chancellor Lake 8 mi · Nugent Lake 8 mi · Reed Lake 9 mi · Orchard Lake 9 mi · Rainbow Lake 9 mi · Eden Lake 9 mi
See how Long Lake stacks up: best yellow perch lakes in Michigan
More water nearby: Mason County fishing maps (13 charts). Browse all Michigan fishing maps or see every water on DepthScout. Bathymetry: published agency survey data. 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.