Field Guides/South Frontenac/Freshwater Fishing
Strong
Best WindowMid-May through October (open seasons vary by species; FMZ 18)
Variantssmallmouth-bass · largemouth-bass · walleye · northern-pike · lake-trout
RegionSouth Frontenac, Ontario

Freshwater Fishing.

Bobs Lake walleye, Loughborough Lake bass, Cranberry and Dog Lake bass and pike out of the Rideau Canal lockstation pools, and lake trout in the Frontenac Provincial Park interior — South Frontenac sits in Fisheries Management Zone 18 with a full warmwater-and-cold-water spread across the township's small-lake hydrology and Rideau drainage.

Freshwater Fishing in South Frontenac
01 — What to know

The brief.

FMZ 18 covers the inland-rivers and small-lake fishery; open seasons and possession limits vary by species — check the Ontario Fishing Regulations Summary before fishing. Bobs Lake (shared with Central Frontenac) is one of the largest lakes in Frontenac County and supports a multi-species warmwater fishery; Loughborough, Dog, Cranberry, and Sydenham lakes carry bass, walleye, northern pike, and muskellunge.

Birch Lake and Devil Lake on the south boundary of Frontenac Provincial Park hold lake trout under park-specific access — interior fishing requires the park's day-use or backcountry process. The Rideau Canal lockstation pools at Lower Brewers, Upper Brewers, and Jones Falls fish for bass and pike during the navigation season.

02 — Locations

7. places.

  1. 01

    Bobs Lake

    FMZ 18 warmwater fishery; multi-bay; partly in South Frontenac, partly in Central Frontenac.

  2. 02

    Loughborough Lake

    FMZ 18; bass, walleye, pike near Battersea and Inverary.

  3. 03

    Dog Lake

    FMZ 18; Rideau Canal lake; bass and pike at the Lower Brewers / Upper Brewers locks.

  4. 04

    Cranberry Lake

    FMZ 18; Rideau Canal lake between Kingston Mills and Lower Brewers.

  5. 05

    Sydenham Lake

    FMZ 18 warmwater near Sydenham village.

  6. 06

    Birch Lake and Devil Lake (Frontenac Provincial Park interior)

    Lake trout under park access.

  7. 07

    Rideau Canal lockstation pools (Lower Brewers, Upper Brewers, Jones Falls)

    Bass and pike during navigation season.

03 — Conditions

Today's read.

Air Quality
21
eu-aqi · low
UV Index
1.8
scale 0–11
Humidity
58%
relative
Visibility
29.1 km
clear
Temp
+6.0°
H 14° · L 0°
Sun
05:41 / 20:23
14h 42m daylight
A+
Prime conditions for freshwater fishing

Cool but comfortable for layered effort · light winds · clean air.

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