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Rating depth structure for yellow perch.
Shared by DepthScout anglers. Exact spots stay private, always.
759-acre lake near T6 R13 WELS. The lake tops out around 10 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Every species below gets its seasonal read from the same numbers driving the chart.
On the chart, Longley Pond draws 759 acres inside 5.9 miles of shoreline, broken up by 9 islands. Index 1.5 on the shoreline: a few honest points and pockets, nothing labyrinthine. There is no deep basin to speak of — the entire surface is under ~15 ft, prime weed water end to end. Tip to tip the water measures near 1.6 mi with a 1.2-mi widest point. The water lies in Piscataquis County. For a second option, Umbazooksus Lake lies 3 mi east.
The spring pattern is a shallow one: white perch in 3 to 10 ft. The depth story barely changes: 3 to 10 ft through summer, 3 to 10 ft in winter. The spot to know is Deep basin, a deep basin in about 10 ft of water that rates prime for white perch in summer. Plan around early morning in the warm months. Summer baits: a small spinner rig drifted or a 1/8 oz jigging spoon gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 10 ft | dusk | Shallow bay flat (1 ft) | Small jig + curly tail, Inline spinner (silver) |
| Summer | 3 to 10 ft | dawn | Deep basin (10 ft) | Small spinner rig drifted, 1/8 oz jigging spoon |
| Fall | 3 to 10 ft | midday | Deep basin (10 ft) | Jigging spoon (small), Blade bait |
| Winter | 3 to 10 ft | dusk | Deep basin (10 ft) | Small rattle spoon, Tungsten + spikes |
The spring pattern is a shallow one: brook trout in 1 to 10 ft. The depth story barely changes: 3 to 10 ft through summer, 2 to 10 ft in winter. The spot to know is Deep basin, a deep basin in about 10 ft of water that rates prime for brook trout in summer. Plan around early morning and the evening in the warm months. Summer baits: a small spoon fished deep or a trolled lake-clear wobbler + worm gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 10 ft | dawn & dusk | Main-lake point (2 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 3 to 10 ft | dawn & dusk | Deep basin (10 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 1 to 10 ft | midday & dawn | Main-lake point (2 ft) | Small spoon (orange), Spinner |
| Winter | 2 to 10 ft | dawn | Deep basin (10 ft) | Small jigging spoon, Tungsten jig + plastic |
Early season yellow perch use the shallows, holding in 3 to 10 ft. Even in summer they hold at 3 to 10 ft; winter keeps them in 3 to 10 ft. Put Deep basin first on the milk run — a deep basin near 10 ft that grades prime for fall. In summer the feeding windows fall in early morning. Tie on a drop-shot micro plastics or a small spoon tipped with worm and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 10 ft | midday & dawn | Shallow bay flat (1 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 3 to 10 ft | dawn | Deep basin (10 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 3 to 10 ft | midday | Deep basin (10 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 3 to 10 ft | midday & dawn | Deep basin (10 ft) | Tungsten jig + spikes, Rattle spoon (small) |
6 pieces of structure are mapped here — Deep basin, around 10 ft, is the deepest of them.
Season dates, license requirements, and size and bag limits for Maine waters are set by the Maine IFW — and special regulations can apply to Longley Pond specifically, so confirm the current rules before you fish.
Check the official Maine fishing regulations →
Longley Pond is about 10 ft (3 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 white perch, brook trout, yellow perch on Longley Pond.
Deep basin is the top-rated area: a deep basin in about 10 ft of water that rates prime for white perch in summer. Every other rated spot, per species and season, is on the map above.
For white 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 Longley Pond is regulated by the Maine IFW. Check the official Maine regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Umbazooksus Lake 3 mi · Mud Pond 6 mi · Lower Ellis Pond 8 mi · Caucomgomoc Lake 9 mi · Upper Ellis Pond 9 mi · Chamberlain Lake 9 mi · Indian Pond 10 mi · Poland Pond 10 mi · Allagash Lake 11 mi · Chesuncook Lake 12 mi · Round Pond / Telos Lake 13 mi · Johnson Pond 13 mi
See how Longley Pond stacks up: best yellow perch lakes in Maine · best brook trout lakes in Maine · best white perch lakes in Maine
More water nearby: Piscataquis County fishing maps (191 charts). Browse all Maine 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.