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14-acre lake in Nipissing District, Ontario. The lake tops out around 29 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 1940, a decades-old survey (an MNRF lake survey). What the data behind the map says about each species, season by season:
The drawn water covers 13 acres wrapped in 0.7 miles of bank. Its 1.4 shoreline index means few bank features; the contours below do the pattern work. About 96% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. The basin spans about 0.3 mi end to end. It sits in Nipissing District. If the bite dies, Holts L. is 1 mi to the northeast.
Spring puts cisco (lake herring) in skinny water — 7 to 29 ft is the zone. Summer fish stay in 9 to 29 ft, and winter fish hold in 9 to 29 ft. Spring cisco (lake herring) concentrate at Deep basin, a prime-rated deep basin around 20 ft. Warm-month bites cluster around early morning. A vertical flutter spoon (small) or a drop-shot micro plastic covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 7 to 29 ft | dawn & dusk | Deep basin (20 ft) | Small silver spoon, Tiny swim jig (white) |
| Summer | 9 to 29 ft | dawn | Deep basin (20 ft) | Vertical flutter spoon (small), Drop-shot micro plastic |
| Fall | 5 to 25 ft | dusk & dawn | Break off the point (19 ft) | Small casting spoon, Inline spinner (silver) |
| Winter | 9 to 29 ft | dawn | Deep basin (20 ft) | Small jigging spoon (glow/silver), Tungsten jig + minnow head |
Spring puts yellow perch in skinny water — 3 to 12 ft is the zone. Warm water sends them out to 9 to 29 ft; cold water stacks them in 9 to 29 ft. Deep basin is the standout, a deep basin at roughly 20 ft, rated prime for fall 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 | open water | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 9 to 29 ft | dawn | Deep basin (20 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 9 to 29 ft | midday | Deep basin (20 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 9 to 29 ft | midday & dawn | Deep basin (20 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Spring brown bullhead on Pat Lake hold shallow, usually 2 to 8 ft. By summer they slide out to 3 to 12 ft, and by winter most fish are in 10 to 25 ft. The chart's best answer is Deep basin — deep basin, 20 ft, prime for winter. Prime time lands in after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | dusk & night | open water | |
| Summer | 3 to 12 ft | night & dusk | open water | |
| Fall | 5 to 15 ft | dusk | open water | |
| Winter | 10 to 25 ft | midday | Deep basin (20 ft) |
The chart marks 3 structure features on Pat Lake; the deepest is Deep basin at about 20 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 Pat Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Pat Lake is about 29 ft (9 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1940, a decades-old survey (an MNRF lake survey).
Anglers target cisco (lake herring), yellow perch, brown bullhead on Pat Lake.
Deep basin is the top-rated area: a deep basin in about 20 ft of water that rates prime for cisco (lake herring) in spring. Scroll up to the map for the complete spot list by species and season.
For cisco (lake herring), 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 Pat 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.
Holts L. 1 mi · Edwards Lake 1 mi · Corkery Lake 2 mi · Wet Lake 2 mi · Kawawaymog Lake 2 mi · Blue L. 2 mi · Cornick Lake 2 mi · Lost Dog Lake 3 mi · Shaw Lake 3 mi · Keewaydin Lake 3 mi · Little Tyne Lake 3 mi · Kuwasda Lake 3 mi
See how Pat Lake stacks up: best yellow perch lakes in Ontario · best cisco (lake herring) lakes in Ontario · best brown bullhead lakes in Ontario
More water nearby: Nipissing District fishing maps (683 charts). Browse all Ontario fishing maps or 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.