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16,953-acre lake in Kenora District, Ontario. The lake tops out around 58 ft. The chart is a model: real shoreline, published maximum depth, interpolated in between. A planning tool, never a navigation product. The season-by-season read for each species follows, from the map's own numbers.
On the chart, Gullrock Lake draws 16,977 acres inside 99.9 miles of shoreline — 30 islands included. With a shoreline index of 5.5, this water is all arms and coves — edge habitat well beyond its acreage. 22% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water. Figure 11.4 mi of water from one end to the other, 6.3 mi at the beam. The water lies in Kenora District. For a second option, Keg Lake lies 2 mi northwest.
Early season lake whitefish use the shallows, holding in 15 to 45 ft. Expect a summer slide to 17 to 58 ft, then a winter hold in 17 to 58 ft. Put Deep basin first on the milk run — a deep basin near 49 ft that grades prime for summer. In summer the feeding windows fall in early morning. Tie on a blade bait vertical or a small jigging spoon 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 | 15 to 45 ft | midday & dawn | Break off the point (26 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 17 to 58 ft chart-limited; documented 40 to 90 ft | dawn | Deep basin (49 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Rock reef (9 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 17 to 58 ft chart-limited; documented 25 to 70 ft | midday & dawn | Deep basin (49 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Early season cisco (lake herring) use the shallows, holding in 10 to 40 ft. Expect a summer slide to 17 to 58 ft, then a winter hold in 17 to 58 ft. Put Deep basin first on the milk run — a deep basin near 49 ft that grades prime for summer. In summer the feeding windows fall in early morning. Tie on a vertical flutter spoon (small) or a drop-shot micro plastic 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 | Deep basin (49 ft) | Small silver spoon, Tiny swim jig (white) |
| Summer | 17 to 58 ft chart-limited; documented 40 to 80 ft | dawn | Deep basin (49 ft) | Vertical flutter spoon (small), Drop-shot micro plastic |
| Fall | 5 to 25 ft | dusk & dawn | Rock reef (9 ft) | Small casting spoon, Inline spinner (silver) |
| Winter | 17 to 58 ft chart-limited; documented 20 to 60 ft | dawn | Deep basin (49 ft) | Small jigging spoon (glow/silver), Tungsten jig + minnow head |
Come spring, look for walleye tight to the bank in 4 to 15 ft. They move out to 15 to 35 ft in summer and finish the year down in 20 to 40 ft. If you only fish one area, make it Break off the point: a drop-off around 26 ft that scores prime in fall. Best bite is the evening and early morning. A crawler harness on bottom bouncer or a deep crankbait (trolled) is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Rock reef (9 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 15 to 35 ft | dusk & dawn | Break off the point (26 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 12 to 40 ft | dusk & night | Break off the point (26 ft) | Jigging rap, Jig + big minnow |
| Winter | 20 to 40 ft | dusk & dawn | Break off the point (26 ft) | Jigging spoon + minnow head, Rattle bait |
Spring sauger on Gullrock Lake hold shallow, usually 4 to 18 ft. They move out to 10 to 30 ft in summer and finish the year down in 15 to 45 ft. Put Rock reef first on the milk run — a rock pile near 9 ft that grades prime for spring. The feeding windows run early morning and the evening. The summer box starts with a bottom bouncer + crawler or a 3-way rig with stickbait.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 18 ft | dawn & dusk | Rock reef (9 ft) | 3/8 oz jig + ringworm, Hair jig + minnow |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (26 ft) | Bottom bouncer + crawler, 3-way rig with stickbait |
| Fall | 12 to 35 ft | dusk & dawn | Break off the point (26 ft) | Jig + big minnow, Blade bait |
| Winter | 15 to 45 ft | dusk | Deep basin (49 ft) | Heavy jigging spoon, Jig + minnow (vertical) |
Come spring, look for yellow perch tight to the bank in 3 to 12 ft. Expect a summer slide to 10 to 30 ft, then a winter hold in 15 to 35 ft. Start at Shallow bay flat. It's a weed flat holding about 6 ft of water and rates prime come spring. Prime time lands in early morning. A drop-shot micro plastics or a small spoon tipped with worm is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (6 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Break off the point (26 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Break off the point (26 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Break off the point (26 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Start shallow in spring: northern pike sit in 2 to 8 ft that time of year. Summer pushes them deeper, 8 to 20 ft, and winter fish settle into 5 to 15 ft. The spot to know is Shallow bay flat, a weed flat in about 6 ft of water that rates prime for northern pike in spring. Warm-month bites cluster around early morning and the evening. Throw a bucktail or a weedless spoon over cabbage until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (6 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Sharp break (18 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Shallow bay flat (6 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Shallow bay flat (6 ft) | Tip-ups, Large jigging spoon |
Gullrock Lake also holds smallmouth bass (10 to 30 ft in summer), rock bass (5 to 20 ft in summer), burbot (17 to 58 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Count 15 structure marks on this chart. The deepest, Deep basin, sits near 49 ft.
Access data: Geospatial Ontario - Fishing Access Points; Government of Ontario - MNR Unpatented Crown Land Shoreline; Government of Ontario - MNR Unpatented Crown Land Shoreline. Confirm conditions and fees locally before you launch.
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 Gullrock Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Gullrock Lake is about 58 ft (18 m) deep at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.
Anglers target lake whitefish, cisco (lake herring), walleye, sauger, yellow perch, northern pike, smallmouth bass, rock bass, burbot on Gullrock Lake.
Deep basin is the top-rated area: a deep basin in about 49 ft of water that rates prime for lake whitefish in summer. The map above holds the full rated-spot list for every species and season.
For lake whitefish, 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 Gullrock 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.
Keg Lake 2 mi · Stone Lake 7 mi · Ranger Lake 8 mi · Chukuni River 10 mi · Dixie Lake 10 mi · Faulkenham Lake 10 mi · Walsh Lake 11 mi · Russett Lake 12 mi · Flat Lake 13 mi · Snail Lake 13 mi · East Lake 14 mi · Spire's L. 14 mi
See how Gullrock Lake stacks up: best smallmouth bass lakes in Ontario · best walleye lakes in Ontario · best sauger lakes in Ontario · best northern pike lakes in Ontario
More water nearby: Kenora District fishing maps (1173 charts). Browse all Ontario fishing maps. See every water on DepthScout. 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.