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348-acre lake in Kenora District, Ontario. The lake tops out around 73 ft. The depth chart comes from Ontario Ministry of Natural Resources and Forestry bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The depth data here comes from the Ontario MNRF survey of 1980 (an MNRF lake survey). Every species below gets its seasonal read from the same numbers driving the chart.
The outline encloses 354 acres, worked by 11 miles of shoreline, broken up by an island. With a shoreline index of 4.2, this water is all arms and coves — edge habitat well beyond its acreage. 89% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. Tip to tip the water measures near 2.6 mi with a 1.1-mi widest point. It sits in Kenora District. Spruce Lake sits 3 mi east — the closest neighbouring chart.
Early season lake trout use the shallows, holding in 10 to 40 ft. Expect a summer slide to 22 to 73 ft, then a winter hold in 18 to 73 ft. Put Deep basin first on the milk run — a deep basin near 69 ft that grades prime for summer. In summer the feeding windows fall in early morning. Tie on a white tube jig (deep) or a magnum spoon on downrigger and you're in the game.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Main-lake point (1 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 22 to 73 ft chart-limited; documented 50 to 120 ft | dawn | Deep basin (69 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Main-lake point (1 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 18 to 73 ft chart-limited; documented 20 to 80 ft | dawn | Deep basin (69 ft) | White tube jig, Airplane jig |
Start shallow in spring: walleye sit in 4 to 15 ft that time of year. Warm water sends them out to 15 to 35 ft; cold water stacks them in 20 to 40 ft. Top water on the chart: Break off the point, a drop-off in the 1 ft range, good in fall. Fish it in the evening and early morning and you'll meet the bite. Throw a crawler harness on bottom bouncer or a deep crankbait (trolled) until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Main-lake point (1 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 15 to 35 ft | dusk & dawn | Shallow feeding flat (11 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 12 to 40 ft | dusk & night | Break off the point (1 ft) | Jigging rap, Jig + big minnow |
| Winter | 20 to 40 ft | dusk & dawn | open water | Jigging spoon + minnow head, Rattle bait |
Spring puts yellow perch in skinny water — 3 to 12 ft is the zone. Warm water sends them out to 10 to 30 ft; cold water stacks them in 15 to 35 ft. Shallow feeding flat is the standout, a feeding flat at roughly 11 ft, rated prime for spring yellow perch. Plan around early morning in the warm months. A drop-shot micro plastics or a small spoon tipped with worm covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow feeding flat (11 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Shallow feeding flat (11 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Break off the point (1 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | open water | Tungsten jig + spikes, Rattle spoon (small) |
Spring northern pike on Cox Lake hold shallow, usually 2 to 8 ft. They move out to 8 to 20 ft in summer and finish the year down in 5 to 15 ft. Put Shallow bay flat first on the milk run — a weed flat near 1 ft that grades prime for spring. The feeding windows run early morning and the evening. The summer box starts with a bucktail or a weedless spoon over cabbage.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (1 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Shallow feeding flat (11 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Shallow feeding flat (11 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Shallow feeding flat (11 ft) | Tip-ups, Large jigging spoon |
Early season burbot use the shallows, holding in 25 to 70 ft. Expect a summer slide to 22 to 73 ft, then a winter hold in 15 to 60 ft. Put Deep basin first on the milk run — a deep basin near 69 ft that grades prime for spring. In summer the feeding windows fall in after dark and midday. Tie on a heavy jig + cut bait and you're in the game.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 25 to 70 ft | night & dusk | Deep basin (69 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 22 to 73 ft chart-limited; documented 50 to 120 ft | night & midday | Deep basin (69 ft) | Heavy jig + cut bait |
| Fall | 22 to 73 ft chart-limited; documented 30 to 80 ft | night & dusk | Deep basin (69 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 15 to 60 ft | night & dusk | Deep basin (69 ft) | Glow tungsten + cut bait, Rattle spoon + minnow head |
Count 7 structure marks on this chart. The deepest, Deep basin, sits near 69 ft.
Season dates, license requirements, and size and bag limits for Ontario waters are set by the Ontario fishing regulations (FMZ summary) — and special regulations can apply to Cox Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Cox Lake is about 73 ft (22 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1980 (an MNRF lake survey).
Anglers target lake trout, walleye, yellow perch, northern pike, burbot on Cox Lake.
Deep basin is the top-rated area: a deep basin in about 69 ft of water that rates prime for lake trout in summer. Open the map above to see every rated spot for each species and season.
For lake trout, 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.
Fishing on Cox Lake is regulated by the Ontario fishing regulations (FMZ summary). Check the official Ontario regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Spruce Lake 3 mi · Three Mile Lake 3 mi · WE67-47, L. 3 mi · Mennin Lake 4 mi · West Hawk Lake 4 mi · WE57-33, L. (Little Clobber L.) 4 mi · Long Lake 5 mi · WE67-24, L. 5 mi · WE67-67, L. 5 mi · WE67-37, L. 6 mi · WE67-63, L. 6 mi · WE67-52, L. 6 mi
See how Cox Lake stacks up: best walleye lakes in Ontario · best northern pike lakes in Ontario · best yellow perch lakes in Ontario · best lake trout lakes in Ontario
More water nearby: Kenora District fishing maps (1173 charts). Browse all Ontario fishing maps. 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.