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Fishing Rainbow Lake: what the data says
1,626-acre lake near Rainbow Township. The lake tops out around 130 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. Here is how the season plays out for each species, straight from the data behind the map.
Arctic Char fishing at Rainbow Lake
Start shallow in spring: arctic char sit in 4 to 15 ft that time of year. Summer pushes them deeper, 20 to 60 ft, and winter fish settle into 10 to 40 ft. Creek inflow is the standout, a inflow / creek mouth at roughly 6 ft, rated prime for spring arctic char. Plan around early morning in the warm months. A jigging spoon vertical or a tube jig (smelt) covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 4 to 15 ft | midday & dawn | Small casting spoon (silver/orange), Jerkbait (small) |
| Summer | 20 to 60 ft | dawn | Jigging spoon vertical, Tube jig (smelt) |
| Fall | 8 to 30 ft | midday & dusk | Casting spoon (orange/gold), Beadhead streamer |
| Winter | 10 to 40 ft | midday & dawn | Jigging spoon (glow/silver), Tungsten jig + plastic |
Brook Trout fishing at Rainbow Lake
In spring, brook trout run shallow here, mostly 2 to 15 ft. They move out to 10 to 30 ft in summer and finish the year down in 3 to 20 ft. The spot to know is Creek inflow, a inflow / creek mouth in about 6 ft of water that rates prime for brook trout in spring. In summer the feeding windows fall in early morning and the evening. Tie on a small spoon fished deep or a trolled lake-clear wobbler + worm and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Small jigging spoon, Tungsten jig + plastic |
Notable structure
- Deep basin: deep basin, around 115 ft
- Old creek channel: creek channel, around 63 ft
- Break off the point: drop-off, around 25 ft
- Secondary point: point, around 22 ft
- Main-lake point: point, around 21 ft
- Feeding flat: feeding flat, around 21 ft
- Creek inflow: inflow / creek mouth, around 16 ft
- Back-bay flat: weed flat, around 9 ft
- Creek inflow: inflow / creek mouth, around 6 ft
- Shallow bay flat: weed flat, around 4 ft
Common questions
How deep is Rainbow Lake?
Rainbow Lake is about 130 ft at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
What fish are in Rainbow Lake?
Anglers target brook trout, arctic char on Rainbow Lake.
Where is the best fishing spot on Rainbow Lake?
Creek inflow is the top-rated area: a inflow / creek mouth in about 6 ft of water that rates prime for brook trout in spring. Open the map above to see every rated spot for each species and season.
When is the best time to fish Rainbow Lake?
For arctic char, the summer bite is best in early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Nearby waters
Doughnut Pond · Woodman Pond · Horserace Ponds · Bear Pond · Big Beaver Pond · Buck Pond
See how Rainbow Lake stacks up: best brook trout lakes in Maine · best arctic char lakes in Maine
Browse all Maine fishing maps or every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.