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Fishing Long Lake: what the data says
139-acre lake near Mason County. The lake tops out around 50 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. What follows comes from the same scoring engine that paints the spots above.
Yellow Perch fishing at Long Lake
Start shallow in spring: yellow perch sit in 3 to 12 ft that time of year. By summer they slide out to 10 to 30 ft, and by winter most fish are in 15 to 35 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 11 ft that scores prime in spring. In summer the feeding windows fall in early morning. A drop-shot micro plastics or a small spoon tipped with worm covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Tungsten jig + spikes, Rattle spoon (small) |
Notable structure
- Deep basin: deep basin, around 50 ft
- Break off the point: drop-off, around 28 ft
- Secondary point: point, around 14 ft
- Main-lake point: point, around 11 ft
- Shallow bay flat: weed flat, around 11 ft
- Back-bay flat: weed flat, around 11 ft
Common questions
How deep is Long Lake?
Long Lake is about 50 ft at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
What fish are in Long Lake?
Anglers target yellow perch on Long Lake.
Where is the best fishing spot 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. Open the map above to see every rated spot for each species and season.
When is the best time to fish Long Lake?
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.
Nearby waters
Emerson Lake · Gooseneck Lake · Pere Marquette River · Ford Lake · Bartons Lake · Chancellor Lake
See how Long Lake stacks up: best yellow perch lakes in Michigan
Browse all Michigan fishing maps or every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.