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Fishing Mountain Lake: what the data says
43-acre lake near Ontario. The lake tops out around 13 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.
Walleye fishing at Mountain Lake
Spring walleye on Mountain Lake hold shallow, usually 3 to 13 ft. Summer fish stay in 4 to 13 ft, and winter fish hold in 4 to 13 ft. Deep basin is the standout, a deep basin at roughly 13 ft, rated prime for winter walleye. Plan around the evening and early morning in the warm months. A crawler harness on bottom bouncer or a deep crankbait (trolled) covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 13 ft | dusk & dawn | 1/8 oz jig + minnow, Hair jig |
| Summer | 4 to 13 ft | dusk & dawn | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 4 to 13 ft | dusk & night | Jigging rap, Jig + big minnow |
| Winter | 4 to 13 ft | dusk & dawn | Jigging spoon + minnow head, Rattle bait |
Northern Pike fishing at Mountain Lake
In spring, northern pike run shallow here, mostly 2 to 8 ft. Summer pushes them deeper, 4 to 13 ft, and winter fish settle into 4 to 13 ft. Shallow bay flat is the standout, a weed flat at roughly 2 ft, rated prime for spring northern pike. Best bite is early morning and the evening. Tie on a bucktail or a weedless spoon over cabbage and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | #5 inline spinner, Spoon (red/white) |
| Summer | 4 to 13 ft | dawn & dusk | Bucktail, Weedless spoon over cabbage |
| Fall | 4 to 13 ft | midday & dawn | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 4 to 13 ft | midday | Tip-ups, Large jigging spoon |
Yellow Perch fishing at Mountain Lake
Start shallow in spring: yellow perch sit in 3 to 12 ft that time of year. They move out to 4 to 13 ft in summer and finish the year down in 4 to 13 ft. Deep basin is the standout, a deep basin at roughly 13 ft, rated prime for fall yellow perch. In summer the feeding windows fall in early morning. Summer baits: a drop-shot micro plastics or a small spoon tipped with worm gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 4 to 13 ft | dawn | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 4 to 13 ft | midday | Jigging spoon (small), Perch rig / spreader |
| Winter | 4 to 13 ft | midday & dawn | Tungsten jig + spikes, Rattle spoon (small) |
Smallmouth Bass fishing at Mountain Lake
Spring smallmouth bass on Mountain Lake hold shallow, usually 3 to 12 ft. They move out to 4 to 13 ft in summer and finish the year down in 4 to 13 ft. If you only fish one area, make it Secondary point: a point around 4 ft that scores prime in fall. In summer the feeding windows fall in 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 | 4 to 13 ft | dawn & dusk | Drop shot (goby/minnow), Ned rig |
| Fall | 4 to 13 ft | midday & dawn | Jerkbait, Blade bait |
| Winter | 4 to 13 ft | midday | Blade bait, Hair jig |
Notable structure
- Deep basin: deep basin, around 13 ft
- Secondary point: point, around 4 ft
- Break off the point: drop-off, around 3 ft
- Main-lake point: point, around 2 ft
- Shallow bay flat: weed flat, around 2 ft
Common questions
How deep is Mountain Lake?
Mountain Lake is about 13 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 Mountain Lake?
Anglers target smallmouth bass, walleye, northern pike, yellow perch on Mountain Lake.
Where is the best fishing spot on Mountain Lake?
Deep basin is the top-rated area: a deep basin in about 13 ft of water that rates prime for walleye in winter. Open the map above to see every rated spot for each species and season.
When is the best time to fish Mountain Lake?
For walleye, the summer bite is best in the evening and 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
Cockle Lake · Little Esson Lake · Clement Lake · Esson Lake · Wilbermere Lake · Grace Lake
See how Mountain Lake stacks up: best smallmouth bass lakes in Ontario · best walleye lakes in Ontario · best northern pike lakes in Ontario · best yellow perch lakes in Ontario
Browse all Ontario fishing maps or every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.