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Rating depth structure for brook trout.
Shared by DepthScout anglers. Exact spots stay private, always.
68-acre lake near Pierce Pond Twp. The lake tops out around 34 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The season-by-season read for each species follows, from the map's own numbers.
The drawn water covers 68 acres wrapped in 2.1 miles of bank, with 2 islands in the mix. With a 1.8 development index there's bank structure worth casting at, in moderation. 87% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. Call it 0.6 mi long by 0.3 mi wide at the broadest reach. Somerset County claims this one. Its nearest charted neighbour, Pickerel Pond, is 1 mi to the south.
Spring brook trout on Grass Pond hold shallow, usually 2 to 15 ft. They move out to 10 to 30 ft in summer and finish the year down in 3 to 20 ft. Put Deep basin first on the milk run — a deep basin near 29 ft that grades prime for summer. The feeding windows run 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 | Main-lake point (4 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Deep basin (29 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (4 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Break off the point (10 ft) | Small jigging spoon, Tungsten jig + plastic |
6 pieces of structure are mapped here — Deep basin, around 29 ft, is the deepest of them.
Season dates, license requirements, and size and bag limits for Maine waters are set by the Maine IFW — and special regulations can apply to Grass Pond specifically, so confirm the current rules before you fish.
Check the official Maine fishing regulations →
Grass Pond is about 34 ft (10 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 Grass Pond.
Deep basin is the top-rated area: a deep basin in about 29 ft of water that rates prime for brook trout in summer. 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 Grass 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.
Pickerel Pond 1 mi · Dixon Pond 2 mi · High Pond 3 mi · Helen Pond 3 mi · Pleasant Pond 9 mi · Gordon Pond 9 mi · Parker Pond 10 mi · Tobey Pond 11 mi · Spencer Lake 11 mi · Moxie Pond 12 mi · Robinson Pond 12 mi · Long Pond 13 mi
See how Grass Pond stacks up: best brook trout lakes in Maine
More water nearby: Somerset County fishing maps (76 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.