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Fishing Lower Jo-Mary Lake: what the data says
1,889-acre lake near T1 R10 WELS. The lake tops out around 64 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. Below is the species-by-species picture, pulled from the same data the map uses.
Brook Trout fishing at Lower Jo-Mary Lake
Start shallow in spring: brook trout sit in 2 to 15 ft that time of year. 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 2 ft of water that rates prime for brook trout in spring. Plan around early morning and the evening in the warm months. 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 |
Lake Trout fishing at Lower Jo-Mary Lake
Spring lake trout on Lower Jo-Mary Lake hold shallow, usually 10 to 40 ft. By summer they slide out to 19 to 64 ft, and by winter most fish are in 16 to 64 ft. If you only fish one area, make it Deep basin: a deep basin around 60 ft that scores prime in summer. Best bite is early morning. Tie on a white tube jig (deep) or a magnum spoon on downrigger and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 19 to 64 ft | dawn | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Heavy casting spoon, Jigging rap over reefs |
| Winter | 16 to 64 ft | dawn | White tube jig, Airplane jig |
Lake Whitefish fishing at Lower Jo-Mary Lake
Start shallow in spring: lake whitefish sit in 15 to 45 ft that time of year. By summer they slide out to 19 to 64 ft, and by winter most fish are in 19 to 64 ft. If you only fish one area, make it Deep basin: a deep basin around 60 ft that scores prime in summer. In summer the feeding windows fall in early morning. A blade bait vertical or a small jigging spoon covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 15 to 45 ft | midday & dawn | Small jig + waxworm, Blade bait (small) |
| Summer | 19 to 64 ft | dawn | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Small spoon (gold), Jig + plastic larva |
| Winter | 19 to 64 ft | midday & dawn | Jigging spoon + bead chain, Tungsten jig + waxie |
Landlocked Salmon fishing at Lower Jo-Mary Lake
Start shallow in spring: landlocked salmon sit in 1 to 15 ft that time of year. Summer pushes them deeper, 25 to 60 ft, and winter fish settle into 10 to 40 ft. If you only fish one area, make it Creek inflow: a inflow / creek mouth around 2 ft that scores prime in spring. Best bite is early morning and the evening. Summer baits: a dodger + streamer down deep or a thin spoon on lead core gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 1 to 15 ft | dawn & dusk | Streamer flies (Grey Ghost) off boards, Thin spoon (Mooselook style) |
| Summer | 25 to 60 ft | dawn & dusk | Dodger + streamer down deep, Thin spoon on lead core |
| Fall | 5 to 30 ft | dawn & dusk | Casting spoon at the mouths, Streamers |
| Winter | 10 to 40 ft | dawn | Small jigging spoon, Swedish pimple + smelt |
Smallmouth Bass fishing at Lower Jo-Mary Lake
In spring, smallmouth bass run shallow here, mostly 3 to 12 ft. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 20 to 45 ft. Main-lake point is the standout, a point at roughly 11 ft, rated prime for fall smallmouth bass. Best bite is early morning and the evening. Tie on a drop shot (goby/minnow) or a ned rig and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Jerkbait, Blade bait |
| Winter | 20 to 45 ft | midday | Blade bait, Hair jig |
White Perch fishing at Lower Jo-Mary Lake
In spring, white perch run shallow here, mostly 4 to 15 ft. Summer pushes them deeper, 15 to 40 ft, and winter fish settle into 20 to 50 ft. If you only fish one area, make it Shallow feeding flat: a feeding flat around 19 ft that scores prime in summer. In summer the feeding windows fall in early morning. Summer baits: a small spinner rig drifted or a 1/8 oz jigging spoon gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 4 to 15 ft | dusk | Small jig + curly tail, Inline spinner (silver) |
| Summer | 15 to 40 ft | dawn | Small spinner rig drifted, 1/8 oz jigging spoon |
| Fall | 15 to 45 ft | midday | Jigging spoon (small), Blade bait |
| Winter | 20 to 50 ft | dusk | Small rattle spoon, Tungsten + spikes |
Notable structure
- Deep basin: deep basin, around 60 ft
- Break off the point: drop-off, around 25 ft
- Old creek channel: creek channel, around 22 ft
- Shallow feeding flat: feeding flat, around 19 ft
- Main-lake point: point, around 11 ft
- Back-bay flat: weed flat, around 11 ft
- Shallow feeding flat: feeding flat, around 11 ft
- Secondary point: point, around 7 ft
- Shallow bay flat: weed flat, around 2 ft
- Creek inflow: inflow / creek mouth, around 2 ft
Common questions
How deep is Lower Jo-Mary Lake?
Lower Jo-Mary Lake is about 64 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 Lower Jo-Mary Lake?
Anglers target smallmouth bass, lake trout, brook trout, landlocked salmon, lake whitefish, white perch on Lower Jo-Mary Lake.
Where is the best fishing spot on Lower Jo-Mary Lake?
Creek inflow is the top-rated area: a inflow / creek mouth in about 2 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 Lower Jo-Mary Lake?
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.
Nearby waters
Pemadumcook Lake · Church Pond · Upper Jo-Mary Lake · Tumbledown Dick Pond · Johnston Pond · Second Debsconeag Lake
See how Lower Jo-Mary Lake stacks up: best smallmouth bass lakes in Maine · best lake trout lakes in Maine · best brook trout lakes in Maine · best landlocked salmon 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.