Willow Brook

Willow Brook ON GRCA

Willow Brook (194) is a real-time streamflow monitoring station on the Willow Brook in ON, operated by the Grand River Conservation Authority. Riverbot tracks its streamflow and alerts anglers the moment flow and temperature hit their fishing window. 27 fish species are associated with this station in public fish records.

GRCA station ID: 194
Operated by: Grand River Conservation Authority
Province: ON
Coordinates: 43.9102, -80.2752

Live conditions & history

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Fishing regulations

FMZ 16 zone default

Default area rules for fish in the public records above. A grey row means the release has no canonical regulation match for that species.

FMZ 16 zone default only. Water-specific, national-park, sanctuary, licence, and in-season exceptions may apply.

Brook Trout Open · Harvest allowed within limits Apr 25 – Sep 30 Details Close
- Apr 25 – Sep 30
  
  Sport licence catch-and-possession limit
  5
  
  Conservation licence catch-and-possession limit
  2
  
  Official rule · retrieved Jul 25, 2026
Largemouth Bass Open · Harvest allowed within limits Jun 27 – Nov 30 Details Close
- Jun 27 – Nov 30
  
  Sport licence catch-and-possession limit
  6
  
  Conservation licence catch-and-possession limit
  2
  
  Official rule · retrieved Jul 25, 2026
Northern Pike Open · Harvest allowed within limits Jan 1 – Mar 31; May 9 – Dec 31 Details Close
- May 9 – Dec 31
  
  Sport licence catch-and-possession limit
  6
  
  Conservation licence catch-and-possession limit
  2
  
  Official rule · retrieved Jul 25, 2026
Smallmouth Bass Open · Harvest allowed within limits Jun 27 – Nov 30 Details Close
- Jun 27 – Nov 30
  
  Sport licence catch-and-possession limit
  6
  
  Conservation licence catch-and-possession limit
  2
  
  Official rule · retrieved Jul 25, 2026
Yellow Perch Open · Harvest allowed within limits Open all year Details Close
- Open all year
  
  Sport licence catch-and-possession limit
  50
  
  Conservation licence catch-and-possession limit
  25
  
  Official rule · retrieved Jul 25, 2026
Blackside Darter No season data
Bluntnose Minnow No season data
Brown Bullhead No season data
Central Mudminnow No season data
Central Stoneroller No season data
Chinook Salmon No season data
Common Shiner No season data
Creek Chub No season data
European Carp No season data
Hornyhead Chub No season data
Johnny Darter No season data
Northern Hog Sucker No season data
Northern Pearl Dace No season data
Pumpkinseed No season data
Rainbow Darter No season data
River Chub No season data
Rock Bass No season data
Rosyface Shiner No season data
Round Goby No season data
Stonecat No season data
Striped Shiner No season data
White Sucker No season data

General area restrictions

Period not confirmed

Sport licence catch-and-possession limit
5

Conservation licence catch-and-possession limit
2

Limit details
total daily catch possession limit for all trout salmon species combined

Official rule

Effective Jan 1, 2026 – Sep 14, 2027 · evaluated for 2026-09-13 in America/Toronto

Regulations shown are for reference only and may not reflect in-season changes. Always verify current regulations with the Ontario Fishing Regulations Summary before fishing.

Fish recorded near this station

Community observations nearby

Willow Brook has 27 fish species documented via iNaturalist research-grade observations within 10 km. These community-sourced records indicate fish presence in the vicinity.

Species include: Rock Bass (Ambloplites rupestris), Brown Bullhead (Ameiurus nebulosus), Central Stoneroller (Campostoma anomalum), White Sucker (Catostomus commersonii), European Carp (Cyprinus carpio), and 22 others.

Rock Bass Ambloplites rupestris
Brown Bullhead Ameiurus nebulosus
Central Stoneroller Campostoma anomalum
White Sucker Catostomus commersonii
European Carp Cyprinus carpio
Northern Pike Esox lucius
Rainbow Darter Etheostoma caeruleum
Johnny Darter Etheostoma nigrum
Northern Hog Sucker Hypentelium nigricans
Pumpkinseed Lepomis gibbosus
Striped Shiner Luxilus chrysocephalus
Common Shiner Luxilus cornutus
Northern Pearl Dace Margariscus nachtriebi
Smallmouth Bass Micropterus dolomieu
Largemouth Bass Micropterus nigricans
Round Goby Neogobius melanostomus
Hornyhead Chub Nocomis biguttatus
River Chub Nocomis micropogon
Rosyface Shiner Notropis rubellus
Stonecat Noturus flavus
Chinook Salmon Oncorhynchus tshawytscha
Yellow Perch Perca flavescens
Blackside Darter Percina maculata
Bluntnose Minnow Pimephales notatus
Brook Trout Salvelinus fontinalis
Creek Chub Semotilus atromaculatus
Central Mudminnow Umbra limi

Where these records come from

Evidence: Community observations nearby; Research-grade community observations (iNaturalist) recorded near this station, not a formal survey.
Records: 27 species; from 74 individual records
Observed: Feb 24, 2013 – Jun 27, 2026; 74 dated records

Sources

iNaturalist research-grade fish observations — 74 records