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5,543-acre lake near Winthrop. The lake tops out around 100 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. The season-by-season read for each species follows, from the map's own numbers.
The outline encloses 5,311 acres, worked by 49.5 miles of shoreline — 24 islands included. The 4.8 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. About 31% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Figure 8.8 mi of water from one end to the other, 2 mi at the beam. It sits in Kennebec County. Annabessacook Lake sits 3 mi west — the closest neighbouring chart.
Early season largemouth bass use the shallows, holding in 2 to 10 ft. Summer is an 8 to 20 ft game here, winter a 15 to 35 ft one. The chart's best answer is Shallow bay flat — weed flat, 10 ft, prime for spring. Best bite is early morning and the evening. Tie on a texas-rigged 10" worm or a deep-diving crankbait and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Shallow bay flat (10 ft) | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Shallow bay flat (10 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Main-lake point (5 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 15 to 35 ft | midday | Break off the point (29 ft) | Blade bait, Jigging spoon |
Spring northern pike on Cobbosseecontee Lake hold shallow, usually 2 to 8 ft. They move out to 8 to 20 ft in summer and finish the year down in 5 to 15 ft. Put Back-bay flat first on the milk run — a weed flat near 4 ft that grades prime for spring. The feeding windows run early morning and the evening. The summer box starts with a bucktail or a weedless spoon over cabbage.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Back-bay flat (4 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Shallow bay flat (10 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Shallow bay flat (10 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Shallow bay flat (10 ft) | Tip-ups, Large jigging spoon |
Structure-wise the chart holds 18 features, led in depth by Deep basin at roughly 90 ft.
Access data: Maine GeoLibrary — Boat Launches (Maine IF&W / DACF). Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Maine waters are set by the Maine IFW — and special regulations can apply to Cobbosseecontee Lake specifically, so confirm the current rules before you fish.
Check the official Maine fishing regulations →
Cobbosseecontee Lake is about 100 ft (30 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Anglers target largemouth bass, northern pike on Cobbosseecontee Lake.
Shallow bay flat is the top-rated area: a weed flat in about 10 ft of water that rates prime for largemouth bass in spring. Open the map above to see every rated spot for each species and season.
For largemouth bass, 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 Cobbosseecontee 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.
Annabessacook Lake 3 mi · Upper Pleasant Pond 9 mi · Sabattus Pond 12 mi · Echo Lake 12 mi · Webber Pond 17 mi · Messalonskee Lake 17 mi · Auburn Lake 18 mi · Clary Lake 18 mi · Great Pond 18 mi · China Lake 22 mi · Damariscotta Lake 23 mi · Brookings Bay 26 mi
See how Cobbosseecontee Lake stacks up: best largemouth bass lakes in Maine · best northern pike lakes in Maine
More water nearby: Kennebec County fishing maps (7 charts). Browse all Maine fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. 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.