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Rating depth structure for brook trout.
Shared by DepthScout anglers. Exact spots stay private, always.
45-acre lake near Moro Plt. The lake tops out around 4 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.
The drawn water covers 44 acres wrapped in 1.9 miles of bank. With a 2 development index there's bank structure worth casting at, in moderation. Every acre of it sits shallower than ~15 ft: one big littoral zone, cover and forage throughout. Call it 0.7 mi long by 0.2 mi wide at the broadest reach. It sits in Aroostook County. If the bite dies, Green Pond is 1 mi to the east.
Spring brook trout on Grass Pond hold shallow, usually 1 to 4 ft. Depth-wise the year is flat: 1 to 4 ft in summer, 1 to 4 ft once it turns cold. The chart's best answer is Deep basin — deep basin, 3 ft, prime for summer. Prime time lands in 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 | 1 to 4 ft | dawn & dusk | Main-lake point (2 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 1 to 4 ft | dawn & dusk | Deep basin (3 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 1 to 4 ft | midday & dawn | Main-lake point (2 ft) | Small spoon (orange), Spinner |
| Winter | 1 to 4 ft | dawn | Deep basin (3 ft) | Small jigging spoon, Tungsten jig + plastic |
The chart marks 6 structure features on Grass Pond; the deepest is Shallow bay flat at about 3 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 Grass Pond specifically, so confirm the current rules before you fish.
Check the official Maine fishing regulations →
Grass Pond is about 4 ft (1 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 3 ft of water that rates prime for brook trout in summer. The interactive chart above rates every spot for each 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 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.
Green Pond 1 mi · Gilman Pond 2 mi · Secret Pond 3 mi · Upper Shin Pond 6 mi · Lower Shin Pond 8 mi · Read Lake 9 mi · Umcolcus Lake 10 mi · Snowshoe Lake 12 mi · Jerry Pond 13 mi · Lost Pond 13 mi · Peaked Mountain Pond 14 mi · Hay Lake 14 mi
See how Grass Pond stacks up: best brook trout 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.