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Rating depth structure for brook trout.
Shared by DepthScout anglers. Exact spots stay private, always.
1,572-acre lake near T6 R13 WELS. The lake tops out around 15 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. What the data behind the map says about each species, season by season:
Umbazooksus Lake maps at 1,569 acres behind 8.5 miles of shoreline. A middling shoreline index (1.5) gives it some bays to work without being a maze. All of it is shallow-zone water — under ~15 ft across the entire basin, so the food chain has the run of the place. The basin spans about 3.5 mi end to end and 1.2 mi across at its widest. It sits in Piscataquis County. Its nearest charted neighbour, Mud Pond, is 3 mi to the east.
Come spring, look for brook trout tight to the bank in 2 to 15 ft. Through summer count on 5 to 15 ft; the winter hold is 2 to 15 ft. Start at Smith Brook inflow. It's an inflow / creek mouth holding about 1 ft of water and rates prime come spring. Prime time lands in early morning and the evening. A small spoon fished deep or a trolled lake-clear wobbler + worm is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Smith Brook inflow (1 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 5 to 15 ft | dawn & dusk | Deep basin (15 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Smith Brook inflow (1 ft) | Small spoon (orange), Spinner |
| Winter | 2 to 15 ft | dawn | Smith Brook inflow (1 ft) | Small jigging spoon, Tungsten jig + plastic |
Early season brown bullhead use the shallows, holding in 2 to 8 ft. Expect a summer slide to 3 to 12 ft, then a winter hold in 5 to 15 ft. Put Deep basin first on the milk run — a deep basin near 15 ft that grades prime for 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 (1 ft) | |
| Summer | 3 to 12 ft | night & dusk | Shallow bay flat (1 ft) | |
| Fall | 5 to 15 ft | dusk | Deep basin (15 ft) | |
| Winter | 5 to 15 ft | midday | Deep basin (15 ft) |
The chart marks 8 structure features on Umbazooksus Lake; the deepest is Deep basin at about 15 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 Umbazooksus Lake specifically, so confirm the current rules before you fish.
Check the official Maine fishing regulations →
Umbazooksus Lake is about 15 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, brown bullhead on Umbazooksus Lake.
Deep basin is the top-rated area: a deep basin in about 15 ft of water that rates prime for brown bullhead in winter. Scroll up to the map for the complete spot list by species and season.
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 Umbazooksus 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.
Mud Pond 3 mi · Longley Pond 3 mi · Chamberlain Lake 7 mi · Indian Pond 8 mi · Lower Ellis Pond 9 mi · Round Pond / Telos Lake 10 mi · Upper Ellis Pond 11 mi · Coffeelos Pond 11 mi · Caucomgomoc Lake 12 mi · Chesuncook Lake 12 mi · East Branch Pond 12 mi · Fourth Lake 12 mi
See how Umbazooksus Lake stacks up: best brook trout lakes in Maine · best brown bullhead 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.