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31-acre lake in Grey County, Ontario. The lake tops out around 9 ft. The contours come from a model of the real basin shape and its known max depth. Read them as probabilities, not soundings, and keep them out of navigation decisions. Here is how the season plays out for each species, straight from the data behind the map.
On the chart, Harrison Lake draws 30 acres inside 1.1 miles of shoreline. Index 1.5 on the shoreline: a few honest points and pockets, nothing labyrinthine. There is no deep basin to speak of — the entire surface is under ~15 ft, prime weed water end to end. Tip to tip the water measures near 0.4 mi with a 0.3-mi widest point. You'll find it in Grey County. The nearest mapped water is Sullivan L. E, 2 mi to the west.
In spring, northern pike run shallow here, mostly 2 to 8 ft. Midsummer fish sit out in 3 to 9 ft before dropping to 3 to 9 ft for winter. Spring northern pike concentrate at Shallow bay flat, a prime-rated weed flat around 3 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a bucktail or a weedless spoon over cabbage most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (3 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 3 to 9 ft | dawn & dusk | Shallow bay flat (3 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 3 to 9 ft | midday & dawn | Shallow bay flat (3 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 3 to 9 ft | midday | Shallow bay flat (3 ft) | Tip-ups, Large jigging spoon |
Harrison Lake carries 5 mapped structure features, topping out (or rather bottoming out) at Main-lake point, about 8 ft down.
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 Harrison Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Harrison Lake is about 9 ft (3 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 northern pike on Harrison Lake.
Shallow bay flat is the top-rated area: a weed flat in about 3 ft of water that rates prime for northern pike in spring. Open the map above to see every rated spot for each species and season.
For northern pike, 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.
Fishing on Harrison 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.
Sullivan L. E 2 mi · Sullivan L. D1 2 mi · McCullough Lake 2 mi · Sullivan L. F 2 mi · Negro Lakes 3 mi · Minkes Lake 3 mi · Welbeck Mill Pond 4 mi · North Louise Lake 4 mi · Louise Lake 5 mi · Boyd Lake 6 mi · Copps Lake 6 mi · Tobermory Lake 6 mi
See how Harrison Lake stacks up: best northern pike lakes in Ontario
More water nearby: Grey County fishing maps (47 charts). Browse all Ontario fishing maps or 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.