High · Low
Solid today
reservoir / Guelph, ON / FMZ 16Guelph Lake
Guelph Lake is a mid-sized flood-control reservoir on the Speed River north of Guelph, impounded behind the Guelph Dam and managed by the Grand River Conservation Authority. Its stained, weed-rich water runs shallow through the vegetated river arms and back bays and deepens toward the dam basin, and that split defines the fishery: largemouth and pike hold in the weedy bays while smallmouth relate to the harder, deeper structure toward the dam.
Target Species
Today's read.
Quick Summary
Cool, with a high of 12° and a low of 1°. Breezy, gusts to 42 km/h. Falling pressure often fires up the bite.
Daily max · 0-11
Avg · NW · gusts to 42 km/h
falling · -6 hPa/24h
10h 20m daylight
Lunar phase
Dry through the launch window
B+
Solid today
Choppy — a 10 km/h average over 4.5 km of fetch keeps you on the southeast shore with short runs. Gusts spike to 42 km/h at times — check the hourly and time your launch. The bite should be firing — a falling barometer often trips a pre-front feed. Fish the southeast shore where wind stacks bait and keep it tight to cover.
Craft Verdicts
Trailer launchCarry-in launch4.5 km max fetchPressure falling (-6.1 hPa/24h)
Powerboat
Clear to launch — a 10 km/h NW average over 4.5 km of fetch stays well within a powerboat's weight and power; easy to hold position. Gusts spike to 42 km/h at times — time your launch.
Kayak
Clear to launch — a 10 km/h NW average over 4.5 km of fetch stays well within a kayak's low, wind-caught profile; easy to hold position. Gusts spike to 42 km/h at times — time your launch.
Canoe
Launchable but exposed — a 21 km/h average gust and 4.5 km of fetch will test an open canoe's shallow draft; put in on the southeast shore and stay tight to it. Gusts spike to 42 km/h at times — time your launch.
Hourly Conditions
5:00 a.m.
6°Temp
UV0
Precip0.0mm
PressureFalling
Fish ActivityMaximum
Wind · NW10kph
Gust10kph
Launch ReadFishable
7:00 a.m.
5°Temp
UV0
Precip0.0mm
PressureFalling
Fish ActivityMaximum
Wind · W9kph
Gust9kph
Launch ReadFishable
9:00 a.m.
6°Temp
UV0
Precip0.0mm
PressureFalling
Fish ActivityMaximum
Wind · W8kph
Gust8kph
Launch ReadFishable
11:00 a.m.
9°Temp
UV1
Precip0.0mm
PressureFalling
Fish ActivityMaximum
Wind · W10kph
Gust35kph
Launch ReadCaution
1:00 p.m.
9°Temp
UV3
Precip0.0mm
PressureFalling
Fish ActivityHigh
Wind · NW13kph
Gust35kph
Launch ReadCaution
3:00 p.m.
12°Temp
UV3
Precip0.0mm
PressureFalling
Fish ActivityHigh
Wind · NW12kph
Gust42kph
Launch ReadDo Not Launch
Windy!5:00 p.m.
11°Temp
UV1
Precip0.0mm
PressureFalling
Fish ActivityMaximum
Wind · NW14kph
Gust33kph
Launch ReadCaution
7:00 p.m.
7°Temp
UV0
Precip0.0mm
PressureFalling
Fish ActivityMaximum
Wind · NW11kph
Gust11kph
Launch ReadFishable
9:00 p.m.
5°Temp
UV0
Precip0.0mm
PressureFalling
Fish ActivityMaximum
Wind · NW8kph
Gust8kph
Launch ReadFishable
Weekly Outlook
LaunchCaution
BiteMaximum
LaunchFishable
BiteFair
LaunchFishable
BiteFair
LaunchAll Clear
BiteHigh
LaunchFishable
BiteMaximum
LaunchFishable
BiteMaximum
LaunchFishable
BiteMaximum
01
How it fishes
Guelph Lake is one of the main flood-control reservoirs on the Speed River; GRCA states its dams (Guelph, Shand, Conestogo) can reduce downstream flood peaks by 50%+ in communities like Kitchener, Cambridge, and Guelph
SourceSmallmouth bass is the single most-logged species on the lake (Fishbrain: 173 anglers)
SourceElectric-motor-only, PWC-banned reservoir — the quiet-water restriction produces a low-pressure, sail/paddle-friendly fishery distinct from typical outboard lakes
SourceGuelph Lake is an officially sanctioned GRCA winter ice-fishing water (pike, perch, crappie) — a four-season fishery
SourceThe dam includes a small 100 kW hydroelectric facility
Source02
Regulations snapshot
This is a summary, not the legal regulation — confirm current rules with the official source before fishing.
Smallmouth & Largemouth Bass (Combined)
Season: fourth Saturday in June to November 30
Limit: S-6 / C-2
Size: none
Official sourceNorthern Pike
Season: January 1 to March 31, and second Saturday in May to December 31
Limit: S-6 / C-2
Size: none
Official source03
Access notes
Guelph Lake Conservation Area boat launches
7743 Conservation Drive, Guelph
Trailer-capable ramps: four boat launches reported on the CA page (three with docks); GRCA fishing page states three ramps, two with docks — electric trolling motors ONLY; outboard motors and personal watercraft (Jet Ski, Sea-Doo, Jet Boards) strictly prohibited — kayaks rentable — day-use/park fee applies.
Access sourceEast-side carry-in access (off Wellington Rd 29)
The portion of the lake east of Wellington Rd 124 can be reached off Wellington Rd 29 via a well-worn path to a small canoe/kayak launch area (outside the main CA). Source: angler report — user-contributed.
Access source04