Dunnville upstream Weir 3

GRAND RIVER ON GRCA

Dunnville upstream Weir 3 (64) is a real-time river monitoring station on the GRAND RIVER in ON, operated by the Grand River Conservation Authority. Riverbot tracks its river conditions, including water level, and streamflow and keeps recent, datum-labelled water-level history for anglers. 44 fish species are associated with this station in public fish records.

GRCA station ID
64
Operated by
Grand River Conservation Authority
Province
ON
Coordinates
42.8974, -79.6288

Live conditions & history

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Riverbot records this gauge’s datum-labelled water level alongside available flow and temperature. Sign up free to unlock the live chart and explore recent conditions.

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7-day weather

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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.
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

Dunnville Upstream Weir 3 has 44 fish species documented via iNaturalist research-grade observations within 10 km. These community-sourced records indicate fish presence in the vicinity.

Species include: Alewife (Alosa pseudoharengus), Rock Bass (Ambloplites rupestris), Black Bullhead (Ameiurus melas), Yellow Bullhead (Ameiurus natalis), Brown Bullhead (Ameiurus nebulosus), and 39 others.

Where these records come from

Evidence
Community observations nearby
Research-grade community observations (iNaturalist) recorded near this station, not a formal survey.
Records
44 species
from 200 individual records
Observed
Aug 2, 2021 – Aug 6, 2026
200 dated records

Sources

🪰 Hatch Calendar

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A month-by-month hatch calendar for this river — which insects are emerging now, hook sizes, and patterns to fish — collected from fly shops and guides who know it.

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