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36-acre lake in Renfrew County, Ontario. The lake tops out around 70 ft. The depth data here comes from a transect sounding survey by the Ontario MNRF. Species by species, here's what the data says the year looks like.
Blithfield Long Lake maps at 36 acres behind 1.7 miles of shoreline, with a single island in the mix. A middling shoreline index (2.1) gives it some bays to work without being a maze. Roughly 51% of the water is 15 ft or less, the band where the food chain lives. Tip to tip the water measures near 0.6 mi with a 0.2-mi widest point. It sits in Renfrew County. Its nearest charted neighbour, Belanger Lake, is 1 mi to the west.
When the water first warms, rainbow trout slide up into 5 to 20 ft. By summer they slide out to 8 to 30 ft, and by winter most fish are in 8 to 40 ft. If you only fish one area, make it Break off the point: a drop-off around 19 ft that scores prime in winter. In summer the feeding windows fall in early morning and the evening. Keep a dodger + spoon (deep troll) or a flutter spoon rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Main-lake point (7 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Break off the point (19 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Break off the point (19 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (19 ft) | Jigging spoon, Tube jig (white) |
The chart marks 5 structure features on Blithfield Long Lake; the deepest is Deep basin at about 65 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 Blithfield Long Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Blithfield Long Lake is about 70 ft (21 m) deep at its deepest point. The depth data here comes from a transect sounding survey by the Ontario MNRF.
Anglers target rainbow trout on Blithfield Long Lake.
Break off the point is the top-rated area: a drop-off in about 19 ft of water that rates prime for rainbow trout in winter. The map above holds the full rated-spot list for every species and season.
For rainbow trout, 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 Blithfield Long 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.
Belanger Lake 1 mi · Barry Lake 1 mi · Battery Lake 1 mi · Bailey Lake 2 mi · Closs Lake 2 mi · Mile Lake 2 mi · Elbow Lake 2 mi · Upper Fish Lake 3 mi · Oriole Lake 3 mi · Lower Fish Lake 3 mi · Calabogie Lake 3 mi · Wabun Lake 4 mi
See how Blithfield Long Lake stacks up: best rainbow trout lakes in Ontario
More water nearby: Renfrew County fishing maps (298 charts). Browse all Ontario fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. 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.