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Rating depth structure for yellow perch.
Shared by DepthScout anglers. Exact spots stay private, always.
730-acre lake near T7 R5 WELS. The lake tops out around 17 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The rest of this page walks each species through its year, using the map's own scoring.
Umcolcus Lake maps at 723 acres behind 8 miles of shoreline. With a 2.1 development index there's bank structure worth casting at, in moderation. All of it is shallow-zone water — under ~15 ft across the entire basin, so the food chain has the run of the place. Tip to tip the water measures near 1.9 mi with a 1.5-mi widest point. It sits in Penobscot County. Gilman Pond sits 7 mi south — the closest neighbouring chart.
Spring brook trout on Umcolcus Lake hold shallow, usually 2 to 15 ft. By summer they slide out to 5 to 17 ft, and by winter most fish are in 3 to 17 ft. The chart's best answer is Wadleigh Brook inflow — inflow / creek mouth, 8 ft, prime for spring. Prime time lands in early morning and the evening. The summer box starts with a small spoon fished deep or a trolled lake-clear wobbler + worm.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Wadleigh Brook inflow (8 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 5 to 17 ft | dawn & dusk | Wadleigh Brook inflow (8 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Wadleigh Brook inflow (8 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 17 ft | dawn | Wadleigh Brook inflow (8 ft) | Small jigging spoon, Tungsten jig + plastic |
Early season landlocked salmon use the shallows, holding in 1 to 15 ft. Expect a summer slide to 5 to 17 ft, then a winter hold in 4 to 17 ft. Put Wadleigh Brook inflow first on the milk run — an inflow / creek mouth near 8 ft that grades prime for spring. In summer the feeding windows fall in early morning and the evening. Tie on a dodger + streamer down deep or a thin spoon on lead core and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 15 ft | dawn & dusk | Wadleigh Brook inflow (8 ft) | Streamer flies (Grey Ghost) off boards, Thin spoon (Mooselook style) |
| Summer | 5 to 17 ft | dawn & dusk | Deep basin (16 ft) | Dodger + streamer down deep, Thin spoon on lead core |
| Fall | 3 to 17 ft | dawn & dusk | Wadleigh Brook inflow (8 ft) | Casting spoon at the mouths, Streamers |
| Winter | 4 to 17 ft | dawn | Deep basin (16 ft) | Small jigging spoon, Swedish pimple + smelt |
When the water first warms, brown bullhead slide up into 2 to 8 ft. By summer they slide out to 3 to 12 ft, and by winter most fish are in 5 to 17 ft. If you only fish one area, make it Deep basin: a deep basin around 16 ft that scores prime in winter. In summer the feeding windows fall in after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | dusk & night | Shallow bay flat (2 ft) | |
| Summer | 3 to 12 ft | night & dusk | Back-bay flat (3 ft) | |
| Fall | 5 to 15 ft | dusk | Old creek channel (13 ft) | |
| Winter | 5 to 17 ft | midday | Deep basin (16 ft) |
The spring pattern is a shallow one: pumpkinseed in 1 to 8 ft. As the season builds they drop to 2 to 10 ft, wintering in 5 to 17 ft. Top water on the chart: Shallow bay flat, a weed flat in the 2 ft range, prime in spring. Time it for the evening and early morning. Summer baits: a micro tube or a sponge spider (fly) gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 8 ft | midday & dusk | Shallow bay flat (2 ft) | Micro jig under a float, Tiny beetle-spin |
| Summer | 2 to 10 ft | dusk & dawn | Shallow bay flat (2 ft) | Micro tube, Sponge spider (fly) |
| Fall | 4 to 14 ft | dusk & dawn | Back-bay flat (3 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 5 to 17 ft | dawn | Deep basin (16 ft) | Tungsten ice jig + plastic, Tiny spoon |
Start shallow in spring: yellow perch sit in 3 to 12 ft that time of year. Warm water sends them out to 5 to 17 ft; cold water stacks them in 5 to 17 ft. Top water on the chart: Back-bay flat, a weed flat in the 3 ft range, prime in spring. Fish it in early morning and you'll meet the bite. Throw a drop-shot micro plastics or a small spoon tipped with worm until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Back-bay flat (3 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 5 to 17 ft | dawn | Deep basin (16 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 5 to 17 ft | midday | Deep basin (16 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 5 to 17 ft | midday & dawn | Deep basin (16 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Structure-wise the chart holds 9 features, led in depth by Deep basin at roughly 16 ft.
Season dates, license requirements, and size and bag limits for Maine waters are set by the Maine IFW — and special regulations can apply to Umcolcus Lake specifically, so confirm the current rules before you fish.
Check the official Maine fishing regulations →
Umcolcus Lake is about 17 ft (5 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 brook trout, landlocked salmon, brown bullhead, pumpkinseed, yellow perch on Umcolcus Lake.
Wadleigh Brook inflow is the top-rated area: an inflow / creek mouth in about 8 ft of water that rates prime for brook trout in spring. Every other rated spot, per species and season, is on the map above.
For brook trout, 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 Umcolcus Lake 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.
Gilman Pond 7 mi · Lost Pond 8 mi · Grass Pond 10 mi · Snowshoe Lake 10 mi · Green Pond 10 mi · Secret Pond 10 mi · Read Lake 12 mi · Upper Shin Pond 13 mi · Lower Shin Pond 15 mi · Scraggly Lake 16 mi · Millimagassett Lake 16 mi · Hay Lake 17 mi
See how Umcolcus Lake stacks up: best yellow perch lakes in Maine · best brook trout lakes in Maine · best landlocked salmon lakes in Maine · best pumpkinseed lakes in Maine
More water nearby: Penobscot County fishing maps (34 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.