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Rating depth structure for brook trout.
Shared by DepthScout anglers. Exact spots stay private, always.
340-acre lake near Chain of Ponds Twp. The lake tops out around 40 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Here is how the season plays out for each species, straight from the data behind the map.
On the chart, Big Island Pond draws 339 acres inside 4.6 miles of shoreline — one island included. Index 1.8 on the shoreline: a few honest points and pockets, nothing labyrinthine. Littoral water — the productive band under ~15 ft — makes up 38% of this chart. Call it 1.6 mi long by 0.6 mi wide at the broadest reach. You'll find it in Franklin County. The nearest mapped water is Rock Pond, 1 mi to the north.
The spring pattern is a shallow one: brook trout in 2 to 15 ft. As the season builds they drop to 10 to 30 ft, wintering in 3 to 20 ft. Top water on the chart: Break off the point, a drop-off in the 19 ft range, prime in summer. Time it for early morning and the evening. 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 | 2 to 15 ft | dawn & dusk | Main-lake point (10 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (19 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (10 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Break off the point (19 ft) | Small jigging spoon, Tungsten jig + plastic |
Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 39 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 Big Island Pond specifically, so confirm the current rules before you fish.
Check the official Maine fishing regulations →
Big Island Pond is about 40 ft (12 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 on Big Island Pond.
Break off the point is the top-rated area: a drop-off in about 19 ft of water that rates prime for brook trout in summer. The map above holds the full rated-spot list for every 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 Big Island 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.
Rock Pond 1 mi · L Pond 1 mi · Grants Pond 2 mi · Little Island Pond 2 mi · Beaver Pond 2 mi · Long Pond 2 mi · South Boundary Pond 3 mi · Secret Pond 3 mi · Massachusetts Bog 5 mi · Cupsuptic Pond 7 mi · Lower Black Pond 10 mi · Abbie Pond 11 mi
See how Big Island Pond stacks up: best brook trout lakes in Maine
More water nearby: Franklin County fishing maps (27 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.