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32-acre lake in Renfrew County, Ontario. The lake tops out around 10 ft. The depth data here comes from the Ontario MNRF survey of 1971, a decades-old survey (a transect sounding survey). Here is how the season plays out for each species, straight from the data behind the map.
The outline encloses 32 acres, worked by 0.9 miles of shoreline. A shoreline index of 1.2 says round and simple: fish relate to depth changes here, not shoreline features. Every acre of it sits shallower than ~15 ft: one big littoral zone, cover and forage throughout. The basin spans about 0.3 mi end to end and 0.3 mi across at its widest. It sits in Renfrew County. If the bite dies, Rattail Lake is 1 mi to the southwest.
Early season brook trout use the shallows, holding in 1 to 10 ft. Even in summer they hold at 3 to 10 ft; winter keeps them in 2 to 10 ft. Put Deep basin first on the milk run — a deep basin near 10 ft that grades prime for summer. In summer the feeding windows fall in early morning and the evening. Tie on a small spoon fished deep or a trolled lake-clear wobbler + worm and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 10 ft | dawn & dusk | Main-lake point (3 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 3 to 10 ft | dawn & dusk | Deep basin (10 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 1 to 10 ft | midday & dawn | Main-lake point (3 ft) | Small spoon (orange), Spinner |
| Winter | 2 to 10 ft | dawn | Deep basin (10 ft) | Small jigging spoon, Tungsten jig + plastic |
Come spring, look for largemouth bass tight to the bank in 2 to 10 ft. Through summer count on 3 to 10 ft; the winter hold is 3 to 10 ft. If you only fish one area, make it Main-lake point: a point around 3 ft that scores prime in fall. Best bite is early morning and the evening. A texas-rigged 10" worm or a deep-diving crankbait is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Main-lake point (3 ft) | Spinnerbait, Chatterbait |
| Summer | 3 to 10 ft | dawn & dusk | Break off the point (7 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 3 to 10 ft | midday & dawn | Main-lake point (3 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 3 to 10 ft | midday | Break off the point (7 ft) | Blade bait, Jigging spoon |
4 pieces of structure are mapped here — Deep basin, around 10 ft, is the deepest of them.
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 Gardiner Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Gardiner Lake is about 10 ft (3 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1971, a decades-old survey (a transect sounding survey).
Anglers target brook trout, largemouth bass on Gardiner Lake.
Main-lake point is the top-rated area: a point in about 3 ft of water that rates prime for largemouth bass in fall. The interactive chart above rates every spot for each species and season.
For brook 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 Gardiner 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.
Rattail Lake 1 mi · Waterloo Lake 2 mi · Big Shingle Lake 2 mi · Harveys Shanty Lake 2 mi · Little Marten Lake 3 mi · Gibson Lake 3 mi · Valiant Lake 3 mi · Clara Lake 4 mi · Dingley Lake 4 mi · Stoney Lake 4 mi · Mousseau Lake 4 mi · Big Gibson Lake 4 mi
See how Gardiner Lake stacks up: best largemouth bass lakes in Ontario · best brook 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.