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Rating depth structure for smallmouth bass.
Shared by DepthScout anglers. Exact spots stay private, always.
3,323-acre lake near T4 R3 WELS. The lake tops out around 47 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.
Upper Mattawamkeag Lk maps at 2,571 acres behind 22.8 miles of shoreline, broken up by 17 islands. That shoreline is heavily fingered (development index 3.2) — bays, points and pockets everywhere, which multiplies the fishable edge. 66% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. Figure 4.1 mi of water from one end to the other, 2.4 mi at the beam. It sits in Aroostook County. Pleasant Lake sits 3 mi north — the closest neighbouring chart.
The spring pattern is a shallow one: chain pickerel in 2 to 10 ft. Midsummer fish sit out in 3 to 15 ft before dropping to 5 to 18 ft for winter. The spot to know is Shallow bay flat, a weed flat in about 2 ft of water that rates prime for chain pickerel in spring. Plan around early morning and the evening in the warm months. Summer baits: a weedless spoon + trailer or a buzzbait gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Shallow bay flat (2 ft) | Inline spinner (silver), Small spoon (red/white) |
| Summer | 3 to 15 ft | dawn & dusk | Shallow bay flat (2 ft) | Weedless spoon + trailer, Buzzbait |
| Fall | 4 to 15 ft | midday & dawn | Shallow bay flat (2 ft) | Jerkbait along weed edges, Spinnerbait |
| Winter | 5 to 18 ft | dawn | Shallow bay flat (2 ft) | Jigging spoon (through ice) |
Early season landlocked salmon use the shallows, holding in 1 to 15 ft. Expect a summer slide to 14 to 47 ft, then a winter hold in 10 to 40 ft. Put Creek inflow first on the milk run — an inflow / creek mouth near 2 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 | Creek inflow (2 ft) | Streamer flies (Grey Ghost) off boards, Thin spoon (Mooselook style) |
| Summer | 14 to 47 ft | dawn & dusk | Deep basin (45 ft) | Dodger + streamer down deep, Thin spoon on lead core |
| Fall | 5 to 30 ft | dawn & dusk | Creek inflow (2 ft) | Casting spoon at the mouths, Streamers |
| Winter | 10 to 40 ft | dawn | Break off the point (23 ft) | Small jigging spoon, Swedish pimple + smelt |
Come spring, look for smallmouth bass tight to the bank in 3 to 12 ft. They move out to 10 to 30 ft in summer and finish the year down in 20 to 45 ft. If you only fish one area, make it Rock reef: a rock pile around 4 ft that scores prime in spring. Best bite is early morning and the evening. A drop shot (goby/minnow) or a ned rig is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Rock reef (4 ft) | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (23 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Shoreline point (11 ft) | Jerkbait, Blade bait |
| Winter | 20 to 45 ft | midday | Break off the point (23 ft) | Blade bait, Hair jig |
Spring white perch on Upper Mattawamkeag Lk hold shallow, usually 4 to 15 ft. By summer they slide out to 15 to 40 ft, and by winter most fish are in 14 to 47 ft. The chart's best answer is Deep basin — deep basin, 45 ft, prime for fall. Prime time lands in early morning. The summer box starts with a small spinner rig drifted or a 1/8 oz jigging spoon.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk | Creek inflow (2 ft) | Small jig + curly tail, Inline spinner (silver) |
| Summer | 15 to 40 ft | dawn | Break off the point (23 ft) | Small spinner rig drifted, 1/8 oz jigging spoon |
| Fall | 15 to 45 ft | midday | Deep basin (45 ft) | Jigging spoon (small), Blade bait |
| Winter | 14 to 47 ft | dusk | Deep basin (45 ft) | Small rattle spoon, Tungsten + spikes |
The chart marks 11 structure features on Upper Mattawamkeag Lk; the deepest is Deep basin at about 45 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 Upper Mattawamkeag Lk specifically, so confirm the current rules before you fish.
Check the official Maine fishing regulations →
Upper Mattawamkeag Lk is about 47 ft (14 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 chain pickerel, landlocked salmon, smallmouth bass, white perch on Upper Mattawamkeag Lk.
Shallow bay flat is the top-rated area: a weed flat in about 2 ft of water that rates prime for chain pickerel in spring. Open the map above to see every rated spot for each species and season.
For chain pickerel, 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 Upper Mattawamkeag Lk 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.
Pleasant Lake 3 mi · Wytopitlock Lake 12 mi · Read Lake 14 mi · Secret Pond 15 mi · Green Pond 16 mi · B Lake 17 mi · Grass Pond 17 mi · Gilman Pond 19 mi · Upper Shin Pond 20 mi · Lower Shin Pond 21 mi · Brackett Lake 22 mi · Molunkus Lake 23 mi
See how Upper Mattawamkeag Lk stacks up: best smallmouth bass lakes in Maine · best landlocked salmon lakes in Maine · best chain pickerel lakes in Maine · best white perch lakes in Maine
More water nearby: Aroostook County fishing maps (85 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.